HVAC School - For Techs, By Techs

In this livestream MeasureQuick Talks with Bert. This is an impromptu Talk with industry leaders, including Shelby Breger from Conduit and Joe Medosch from MeasureQuick, about how mobile technology is revolutionizing HVAC diagnostics and training. Featuring special guests discussing how modern tools like MeasureQuick and other diagnostic apps are making it easier for technicians of all experience levels to perform advanced diagnostics and build customer trust. Key Topics: How technicians can leverage mobile technology for better diagnostics Using tablets and phones for real-time HVAC measurements Making technical data accessible and meaningful for customers Bridging the gap between experienced techs and new talent The future of HVAC diagnostics and training How technology can help attract new talent to the trades Recorded live at AHR Expo 2025 with special guests from MeasureQuick and other industry leaders. Whether you're a seasoned pro or new to the trade, learn how modern diagnostic tools can help take your HVAC business to the next level. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

Join us as we sit down with Nick from Inficon at AHR Expo 2025 to discuss the latest innovations in Leak Detection Tech. We explore the evolution from halide torches to modern infrared sensors, and get an exclusive look at their newest product - the D-TEK Pro. Key topics covered: The transition from heated diode to infrared sensor technology Deep dive into the Stratus leak detector's cloud hunting and pinpoint modes First look at the new D-TEK Pro with 10x airflow and enhanced sensitivity Discussion of forming gas applications in leak detection Tips for proper leak detector usage and maintenance New accessories for wind protection and insulation penetration Whether you're a seasoned tech or new to the trade, this conversation covers essential knowledge about modern leak detection tools and techniques. Learn how these advances are making leak detection more reliable and efficient for HVAC/R professionals. Find out more at www.inficon.com. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

Join Bryan Orr as he goes Live from the AHR Expo 2025 at the Orange County Convention Center with Kalos Services team members Dre and Elliot! They share their first impressions of the massive HVAC industry expo, discuss interesting booth displays, and chat about the latest tools and technology they've spotted on the show floor. Get their perspective on what it's like to attend one of the largest HVAC/R trade shows in the world, featuring over 60,000 industry professionals from around the globe. The team discusses everything from impressive industrial equipment displays to innovative tools like Fieldpiece's new all-in-one leak detector. Special guest appearances and impromptu conversations with other industry professionals make this casual livestream a fun peek into the energy and excitement of AHR Expo 2025! Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this engaging episode of the HVAC School Podcast, host Bryan sits down with Jesse from NAVAC to dive deep into the evolving landscape of refrigeration technology, focusing primarily on the transition to A2L refrigerants. The conversation offers a refreshingly pragmatic approach to addressing industry concerns about these new, mildly flammable refrigerants, dispelling myths and providing practical insights for HVAC technicians. The discussion begins by addressing the most pressing question for many technicians: Do you need to buy all new tools to work with A2L refrigerants? Jesse from NAVAC provides a nuanced response, emphasizing that while there are currently no regulations mandating new equipment, the company has proactively developed tools that are safety-certified and compatible with the new refrigerant types. They explore the intricacies of safety certifications like UL and CSA, explaining the differences between UL Listed and UL Verified, and highlighting the importance of intrinsically safe equipment, especially for tools like vacuum pumps and recovery machines. NAVAC's approach goes beyond mere product promotion, with Jesse positioning himself as an educator first. The podcast delves into the technical details of A2L refrigerants, challenging common misconceptions and providing context about their flammability. Bryan and Jesse draw parallels with previous refrigerant transitions, noting how technicians were initially skeptical about R-410A but eventually adapted. They emphasize the importance of best practices, proper training, and understanding the actual risks associated with these new refrigerants, rather than succumbing to fear-based narratives. The episode also showcases NAVAC's latest technological innovations, including smart probes, a Bluetooth scale, a smart valve for charging and recovery, and an advanced vacuum pump with a one-touch oil testing feature. These tools represent the company's commitment to improving technician efficiency and safety, with features that address real-world challenges faced by HVAC professionals. Key Topics Covered: A2L Refrigerants Myths and misconceptions about flammability Comparison with previous refrigerant transitions Safety considerations and best practices Safety Certifications Differences between UL Listed and UL Verified Importance of intrinsically safe equipment CSA and ETL certifications NAVAC's New Tools Smart probes with Bluetooth connectivity Advanced vacuum pump with automatic oil testing Flex manifold with digital accuracy and analog feel Battery-operated pumps with improved run times Industry Trends Preparation for A2L and future refrigerant transitions Regulatory changes and efficiency standards Importance of technician education and adaptation Additional Insights: No current regulations require new tools for A2L refrigerants Proper training and best practices are crucial Technicians should focus on understanding new technologies Safety is about awareness and proper procedures, not fear Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

Roman Baugh and Donald Falese from VRF Tech Talk podcast takeover the HVAC School booth at AHR EXPO 2025. Join them as they talk about the new VRF products being unveiled, water cooled VRF up's and down's and why VRF is such a difficult trade work in. You will not want to miss this one! Highlights include: Daikin's innovative modular air handler for residential applications Hisense's groundbreaking single-phase VRF system with integrated hot water heating New NFC technology for easier system diagnostics and commissioning Updates on vapor injection technology and inverter developments The emergence of air source heat pump chillers Latest innovations from manufacturers like Gree, TCL, Cooper Hunter and more Whether you're a seasoned VRF technician or just getting started with inverter technology, this discussion covers everything from basic principles to cutting-edge developments in the industry. Roman and Donald break down complex technologies into understandable concepts while sharing their firsthand experience with the latest products at the expo. Don't miss this opportunity to stay up-to-date with the future of HVAC technology! Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

Join us for a candid conversation with Bill Spohn from TruTech Tools at AHR Expo 2025! Bill shares exciting news about his planned retirement and transition plan for TruTech Tools, plus gives his insights on this year's 6th Annual HVAC/R Training Symposium where TruTech Tools was the title sponsor. We discuss the unique community atmosphere of both the Symposium and AHR Expo, exploring what makes these events special for the HVAC industry. In this livestream, we dive into: Bill's announcement about transitioning TruTech Tools leadership to his son over the next 3 years A detailed recap of HVAC School Symposium and what made it successful Thoughts on building authentic industry communities and fostering connections Leadership insights and maintaining vision while giving team members agency Perspectives on AHR Expo 2025 and why it matters for HVAC professionals Don't forget to use offer code GETSCHOOLED for a great discount at trutechtools.com! Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this informative podcast episode, Bryan from HVAC School is joined by Louise Keller, the National Training Manager for UEI Test Instruments, to discuss the critical importance of carbon monoxide safety and proper combustion analysis. The conversation begins with lighthearted banter about the previous night's Tactical Awards ceremony before diving into the serious topic of CO dangers and detection. Louise shares valuable insights about the dangers of carbon monoxide exposure, particularly at lower levels that might not trigger standard home CO alarms. She explains that CO poisoning can mimic many other conditions, including early-onset Alzheimer's, traumatic brain injury, and mobility issues. Bryan adds historical context by recounting how many Victorian-era "ghost stories" and fainting episodes coincided with the introduction of gas lighting in homes, suggesting these phenomena were likely CO poisoning symptoms. He also shares the little-known story of Walt Disney's parents, who tragically died from carbon monoxide poisoning in a house that Disney built for them. The discussion shifts to practical applications, with Louise explaining the proper use of combustion analyzers and the importance of regular recertification. They emphasize that visual inspection alone is not sufficient for safety, and proper testing is essential for both client safety and equipment efficiency. The conversation concludes with information about UEI's ServicePlus Guaranteed program, which offers extended warranty coverage, same-day recertification turnaround, transparent pricing, and convenient shipping for analyzers. Key Topics Covered: The dangers of carbon monoxide as an odorless, colorless, and tasteless gas How low-level CO exposure can cause serious health issues that mimic other conditions The limitations of standard home CO alarms, which typically won't trigger until reaching 70 PPM for 1-4 hours Proper combustion analyzer startup procedures (starting outside in fresh air) The importance of checking all combustion appliances in a home (furnaces, water heaters, ovens, etc.) Best practices for comprehensive testing, including "appliance sweep tests" Historical context of CO poisoning, including connections to Victorian ghost stories UEI's ServicePlus Guaranteed program for analyzer recertification and warranty extension The importance of regular recertification to ensure accurate readings and maintain warranty coverage Tips for helping clients schedule regular maintenance and safety checks Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this episode of the HVAC School podcast, Bryan sits down with James and Jeff from Copeland to discuss the evolution and capabilities of Copeland's mobile applications, particularly focusing on the Copeland Mobile app and the new Scout feature. James, who has been with Copeland for 28 years, and Jeff, who works as a trainer, share their extensive knowledge about how these tools can benefit HVAC technicians in the field. The conversation begins with a historical perspective on Copeland's service bulletins, which have been a valuable resource for technicians since the 1980s. The guests explain how these bulletins have evolved from being difficult to access to becoming readily available through the Copeland Mobile app. They discuss how the app has become an essential tool for technicians, allowing them to access critical information about compressors, including operating envelopes, current draw specifications, and troubleshooting guides. The discussion then moves to the exciting new features in the Copeland Mobile app, including the integration of Fault Finder and the introduction of Scout, an AI-powered search tool that draws exclusively from Copeland's database. Scout not only provides answers to technical questions but also points users to relevant resources and documentation. The guests emphasize how these tools can help reduce unnecessary compressor replacements, noting that 30-40% of returned compressors have nothing wrong with them. Key Topics Covered: Evolution of Copeland service bulletins from paper to digital format Features of the Copeland Mobile app, including: Operating envelope visualization Current draw specifications Compressor cross-reference tools Warranty status checking Mechanical specifications and oil charge information Wiring diagrams and troubleshooting guides Introduction of Scout AI-powered search feature Integration of Fault Finder into the main app Using the app for training technicians Importance of proper compressor diagnostics Accessing technical documentation and AE (Application Engineering) bulletins New camera feature for scanning compressor data tags Desktop version functionality for service managers White Rogers mobile applications Warranty tracking and parts availability features Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this episode, Bryan is joined by guests Jacob and JD to discuss quality control (QC), punch out procedures, and best practices in HVAC installation and service. The conversation delves deep into the various aspects of maintaining high standards in workmanship, from aesthetic considerations to technical performance metrics that affect system longevity. The discussion begins with an exploration of workmanship quality and how to instill pride in work among team members. The guests share insights about the importance of company culture in maintaining high standards, emphasizing that quality control isn't just about catching mistakes but about fostering an environment where everyone takes ownership of their work. They discuss how photo documentation can be a powerful tool for quality control, allowing team members to review work remotely and catch issues that might be missed in the field. The conversation then shifts to the more technical aspects of quality control, particularly focusing on procedures that affect system longevity but might not be immediately visible to clients. This includes proper brazing techniques, pulling adequate vacuums, and proper system charging. The guests emphasize the importance of having a culture where team members hold each other accountable for following proper procedures, even when cutting corners might be tempting. The episode concludes with a detailed discussion about working with inspectors and handling code compliance, offering practical advice for maintaining good relationships with authorities having jurisdiction (AHJ) while ensuring work meets all necessary standards. Key Topics Covered: Importance of workmanship appearance and aesthetic quality Role of company culture in maintaining high standards Using photo documentation for quality control Technical procedures that affect system longevity Methods for ensuring proper installation procedures are followed Dealing with inspectors and code compliance Characteristics of good punch-out personnel Balance between production speed and quality Importance of praise and constructive criticism in quality control Strategies for reducing punch list items Building relationships with inspectors Handling code interpretation disagreements Value of being a trades generalist for punch work Impact of workmanship on inspector relationships Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this short podcast episode, Bryan covers some common mistakes when measuring static pressure. Static pressure is balloon pressure, not CFM or velocity pressure, but it can be an airflow indicator. The best way to start learning about static pressure is to start measuring total external static pressure. Gas furnaces and heat pumps are different; static pressure is rated at the furnace in the former (not the cased coil, which is additional), and the static pressure includes the coil in a heat pump. The highest static pressure will always be at the blower, but restrictions on either side of the blower will raise static pressure on both sides of the blower. Dirty components can drop the total external static pressure, which is a common point of confusion that can lead to misdiagnosis. You'll want to determine static pressure at the blower and across components. If you want to determine if a cased evaporator coil is clogged, you can measure the static pressure drop across the coil (by measuring below and above the coil) and compare it to the manufacturer's specifications. Dirty blower wheels can also cause problems, as they don't move much air in the first place. Lower static pressure at the blower is the best for amp draw and airflow, and our system designs and accessories can support low static pressure. Dialing in airflow, putting your probes in the right positions when you measure static pressure, proper register and grille selection, and minimally restrictive filters all go a long way. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this insightful discussion at AHR 2025 in Orlando, Bryan connects with Nikki Krueger from Santa Fe dehumidifiers, exploring the evolution and importance of whole-house dehumidification in modern HVAC systems. Nikki, who has spent 20 years in the indoor air quality industry, shares her journey from a public relations background to becoming deeply involved in the technical and engineering aspects of dehumidification technology. She highlights the groundbreaking work of Ken Gehring, who invented whole-house ventilating dehumidifiers in the mid-1990s and continues to be actively involved in the industry at 84 years old. The conversation delves into the changing landscape of home construction and its impact on dehumidification needs. As houses become tighter due to building codes and energy efficiency requirements, the relationship between air conditioning and dehumidification has become more complex. They discuss how modern, high-efficiency AC systems often struggle with effective dehumidification due to their focus on temperature control and energy efficiency. This challenge is particularly evident in cases where AC units have higher sensible heat ratios, meaning they're better at changing temperature than removing moisture. A significant portion of the discussion focuses on the technical aspects of sizing and installing dehumidifiers correctly. Nikki emphasizes the importance of understanding true dehumidifier capacity under different conditions, noting that a unit's performance varies significantly based on temperature and humidity levels. The conversation also covers the evolution of ventilation requirements in modern homes and Santa Fe's response with new products featuring larger fans and eight-inch ventilation ducts to better match dehumidification capacity with ventilation needs. Key Topics Covered: The history and evolution of whole-house dehumidification The relationship between modern AC systems and dehumidification challenges The importance of proper sizing and installation of dehumidifiers How building codes and tighter construction affect moisture control needs The role of ventilation in modern dehumidification systems The impact of temperature on dehumidifier performance ratings Common installation mistakes and best practices The significance of dew point versus relative humidity The challenges of maintaining specific relative humidity levels in homes New developments in dehumidifier technology, including larger ventilation ducts The importance of proper data and performance metrics in system design Resources for contractors and technicians learning about dehumidification Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this special episode from the 2025 AHR Expo, Bryan brings us two fascinating conversations with industry leaders who are shaping the future of HVAC technology and tools. The episode kicks off with Tony Gonzalez from Fieldpiece celebrating their 35th anniversary. Tony shares his remarkable journey from packaging meters in the warehouse to his current leadership role, providing unique insights into the company's evolution. The discussion explores Fieldpiece's pioneering role in developing HVAC-specific testing equipment, particularly highlighting their groundbreaking HS26 meter that filled a crucial gap in the industry when no other company was creating specialized meters for HVAC technicians. The conversation with Tony delves deep into the technical aspects of modern HVAC work, particularly focusing on combustion analysis and its three fundamental pillars: safety, efficiency, and consistency. Tony explains how Fieldpiece's JobLink system has revolutionized the way technicians document their work and communicate with customers through comprehensive digital reporting. The discussion also covers the evolution of refrigerants and POE oils, emphasizing how practices that weren't considered critical in the past have become essential with modern systems and materials. In the second segment, Bryan sits down with Mike and Ashley from Refrigeration Technologies' Viper division, where they share the compelling origin story of their company. Mike recounts how his father, John Pastorello, a chemist who found himself taking an AC technician job in the 1980s, leveraged his chemistry background to develop superior products, starting with their flagship product, Big Blu. The conversation highlights Refrigeration Technologies' impressive growth, including their recent expansion to a campus-like facility with an additional 30,000 square feet and their achievement of making the Inc. 5000 list for three consecutive years. Ashley, their Director of Education and Brand Management, discusses their innovative approach to industry engagement, including their first-ever "Viper Bowl" competition and their commitment to safety in product development. Key Topics Covered in This Episode: Fieldpiece's 35-year journey and the evolution of HVAC-specific testing equipment Modern combustion analysis fundamentals and the importance of proper testing The JobLink system and its impact on documentation and customer communication Evolution of refrigerants, POE oils, and critical installation practices Refrigeration Technologies' origin story and growth from a family business to an industry leader Development and innovation of essential HVAC chemicals and tools under the Viper brand The importance of safety in product formulation and application Global expansion and market reach in the HVAC industry Impact of modern technology on HVAC diagnostics and documentation Training approaches and industry education initiatives Company cultures focused on innovation and problem-solving The role of family businesses in advancing HVAC technology Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this episode, Bryan speaks with Manly, an HVAC professional from Manitoba, Canada, about his journey from working in his family's plumbing business to running his own HVAC company. Manly shares his experiences working in extreme cold weather conditions, where temperatures can drop to -30°C (-22°F), and discusses the unique challenges and emergency response strategies required in such a heating-dominated market. The conversation delves deep into the ethical aspects of running an HVAC business, with both Bryan and Manly sharing their Christian perspectives on business ethics, customer service, and professional integrity. They discuss the importance of honest communication with customers, admitting mistakes, and making decisions based on customers' needs rather than purely financial motivations. Manly emphasizes how his faith influences his business practices and decision-making, particularly when advising customers about repairs versus replacements. The discussion also explores the importance of continuous learning and professional development in the HVAC industry. Manly describes his experience returning to school in his forties to complete his air conditioning mechanic certification, highlighting how the industry requires constant adaptation and learning. Both professionals stress the value of building community within the trade and the importance of sharing knowledge to help others avoid making the same mistakes they've encountered. Key Topics Covered: Working in extreme cold weather conditions (-30°C/-22°F) Emergency heating solutions using construction heaters The transition from plumbing to HVAC Challenges of equipment sizing and customer education Business ethics and Christian principles in HVAC Importance of admitting mistakes and maintaining integrity Continuous learning and professional development Building community in the HVAC industry Balancing profit motives with customer needs Manitoba's two-tier licensing system for HVAC technicians Parts availability challenges and creative solutions Role of humility in professional growth Value of proper education and training in HVAC Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this short podcast episode, Bryan talks about EER (Energy Efficiency Ratio) and SEER (Seasonal Energy Efficiency Ratio) and how to calculate EER in the field. EER and SEER are ratings that we often see on equipment (as are SEER2 and EER2) based on a ratio of an output to an input. Whereas coefficient of performance (COP) is a direct ratio of watts out to watts in, EER and SEER account for BTUs and watts. EER and SEER indicate the cooling capacity (in BTUs) we get from the watts we put in. The ratio changes based on field conditions, and EER2 and SEER2 have more realistic test conditions than EER and SEER (the static pressure for systems rated below 65,000 BTUs per hour was 0.1"wc for EER and SEER, and it is now 0.5"wc for EER2 and SEER2, which is much closer to average field conditions). To determine EER, you have to figure out BTU production and stack it against your wattage. You'll need to know your delta enthalpy (delta H), multiply it by the CFM, and then multiply the product of those by 4.5 to get your BTU output. A calculator on apps like measureQuick can help you find out your delta H, but you'll need a proper wet-bulb temperature before you can do that. You can determine CFM with a TrueFlow grid or manufacturer's blower charts. Finding watts can be a challenge with ECMs and inverter-driven systems; it's not as simple as volts x amps, and you will need a meter that can measure power factor and take readings from the condenser fan, compressor, and blower motor. That wattage becomes the number you divide into BTUs to get the EER. SEER is averaged over a season, HSPF is for heating instead of cooling, and you can convert the BTUs to watts (by multiplying by 3.41) and determine the ratio of watts out to watts in. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this informative episode, Josh Souders from Copeland joins Bryan to dive deep into heat pump technology, discussing everything from basic operations to advanced features in cold climate applications. The conversation begins with a fundamental explanation of how heat pumps work, describing them as essentially air conditioners with a reversing valve that allows them to provide both heating and cooling. Josh explains the thermodynamic principles that enable heat pumps to extract heat from cold outdoor air and transfer it indoors, achieving coefficients of performance (COP) ranging from 1.5 to 3, making them significantly more efficient than traditional electric resistance heating. The discussion moves into the broader context of electrification and decarbonization, explaining how heat pumps fit into these environmental initiatives. Josh details how modern cold climate heat pumps have evolved significantly from earlier generations, particularly through the Department of Energy's Cold Climate Heat Pump Challenge program. This program pushed manufacturers to develop systems capable of maintaining full heating capacity at very low temperatures, addressing historical concerns about heat pump performance in cold regions. Variable speed technology emerges as a key topic, with Josh explaining how modern inverter-driven compressors can operate across a wide range of speeds - from 900 to 7,000 RPM in their newest A2L products. This capability allows systems to maintain heating capacity in cold weather by increasing compressor speed when needed. The conversation also covers practical considerations for installation and troubleshooting, including the importance of proper defrost cycles, installation location, and the use of riser kits in snowy regions. Key Topics Covered: Basic heat pump operation and refrigeration cycle Electrification and decarbonization initiatives Cold climate heat pump capabilities and DOE challenge program Variable speed compressor technology Different types of heat pumps (air source, ground source, water source) Defrost cycles and their importance Installation considerations for cold climates Vapor injection technology and its benefits Available incentives and rebates for heat pump installation Troubleshooting tips for heat pump systems Low-GWP refrigerant considerations Resource links for contractors and homeowners Modern heat pump efficiency and performance improvements Resources mentioned: DSIRE USA website for state incentives (dsireusa.org) DOE rebate portal (energy.gov/save/rebates) Copeland heat pump information (hvacrschool.com/copeland-heat-pumps) Copeland Mobile app and White Rogers family of apps Copeland Training Hub for education resources Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this podcast episode, Bryan, Jacob, and JD provide an in-depth look at a significant HVAC project that tested their team's ability to adapt, learn, and improve. The discussion centers on a large-scale apartment building project that presented numerous challenges in project management, team dynamics, and installation processes. What began as a chaotic and inefficient workflow ultimately transformed into a more streamlined and collaborative effort through careful analysis and strategic adjustments. The team candidly discusses their initial struggles with project management, particularly around materials handling, piecework compensation, and team coordination. They highlight the importance of moving from an individual-focused approach to an assembly-line mentality, which dramatically improved both productivity and team morale. The podcast reveals the critical nature of communication, ownership, and consistent processes in managing large-scale construction projects. A key theme throughout the discussion is the evolution of team culture and interpersonal dynamics. The participants emphasize that effective teamwork isn't about being friends, but about mutual respect, individual accountability, and collective goal achievement. They stress the importance of merit-based performance and creating a work environment where team members are motivated by productivity and quality rather than personal relationships or financial incentives. Key Topics Covered: Project scope: New ground-up apartment building HVAC installation Challenges with initial project management approaches Transition to assembly-line production methods Materials handling and staging strategies Piecework compensation challenges and improvements Team dynamics and communication Importance of consistent processes Breaking down installation into specialized tasks Balancing speed and quality of work Learning from project experiences for future improvements Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this short Q&A podcast episode, Bryan answers a listener-submitted question about circuit board troubleshooting: is there a quick way to learn how to check circuit boards, and if so, where are those resources? A circuit board is a bunch of components put together on a printed circuit board (PCB). There isn't a lot of helpful universal information about circuit boards available, as they vary quite a bit by model and manufacturer. However, many of the basic components will be the same across circuit boards: microprocessors, diodes, relays, capacitors, and transformers. If you understand what these are on their own, that will help you understand what they do in circuit boards. You mostly need to know the inputs, outputs, and sequence of operation of a circuit board to diagnose it. The sequence of operation tells you when certain things are supposed to happen, such as in an integrated furnace control (IFC); the flame rectification process is a classic example. If the flame can be proven, the operation continues; if it can't be proven, then that will cause a lockout (possibly due to improper grounding or poor placement and NOT necessarily because of the board). A lot of issues with the board can be diagnosed if you understand the inputs and outputs (e.g., 24v signals) or observe it with your senses, such as bloated capacitors or ant nests. Becoming a master of the obvious and checking the manufacturer's literature are the top two things you can do to diagnose circuit boards. HVAC Control Systems by Ronnie Auvil Electricity for Refrigeration, Heating, and Air Conditioning by Russell Smith Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this episode of the HVAC School Podcast, Trevor Matthews and Bryan dive deep into the transformative potential of artificial intelligence (AI) in the refrigeration and HVAC industries. They explore how AI is not a new concept in their field, discussing how manufacturers like Copeland, Sporlan, and Danfoss have long incorporated AI-driven tools and repositories of information into their applications. The conversation goes beyond simple technological novelty, positioning AI as a powerful learning and troubleshooting assistant for technicians. The discussion highlights AI's role as a supportive tool rather than a job replacement. Trevor emphasizes that AI cannot physically perform trade-specific tasks like climbing ladders or brazing pipes, but it can provide invaluable guidance, explain complex procedures, and help technicians quickly access specialized knowledge. Particularly beneficial for less experienced technicians working late-night shifts or challenging service calls, AI can serve as an instant reference point, helping to jog memory and provide step-by-step troubleshooting guidance. Bryan and Trevor both stress the importance of approaching AI with curiosity and critical thinking. They advise against treating AI-generated information as absolute truth, instead recommending users ask follow-up questions, verify information, and use AI as a conversational learning tool. Trevor is actively developing a specialized AI platform for refrigeration training, working to train the system with industry-specific knowledge and real-world experience to create a more accurate and helpful resource for technicians. Key Topics Covered: AI's current applications in refrigeration and HVAC industries How AI can support technician learning and troubleshooting Strategies for effectively using AI tools The importance of maintaining technical knowledge while using AI Trevor's ongoing development of a specialized refrigeration AI training platform Practical examples of AI use in technical and non-technical scenarios Addressing concerns about AI potentially "dumbing down" the industry For those interested in participating in Trevor's AI beta test, email [email protected] with the subject line "Looking to be included in the beta test for the refrigeration training AI." You can also visit the Refrigeration Mentor website at https://refrigerationmentor.com/. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this short episode of the HVAC School podcast, Bryan and Tom Lorenz from Copeland talk about the new Sensi equipment interface. This product has been in field trials for months and will be launching in February. It will also be featured at the 2025 AHR Expo in Orlando. You can learn more about when and where the product launch will be at AHR at https://ahr25.mapyourshow.com/8_0/sessions/session-details.cfm?scheduleid=197. Sensi is launching the new Sensi equipment interface module (indoor and outdoor), which eliminates the need to pull additional thermostat wire, and it's great for upgrades from A/C units to heat pumps or single-stage or multi-stage units. These have a strong wireless connection that can be picked up approximately 100 feet through walls. The ideal indoor application will be whenever you have single-stage to multi-stage upgrades and can't pull more wires. Outdoor applications are best for A/C-to-heat pump conversions and upgrades from single-stage to multi-stage. This module also contains outdoor sensors and can work with accessories like dehumidifiers. The Sensi equipment interface module has been tested in extreme weather conditions and has proven its durability. These will be launched as part of a kit with indoor and outdoor modules and a Sensi Touch 2 smart thermostat. The Sensi Touch 2 will also receive an upgrade to make it compatible with the new Sensi equipment interface module. The Sensi equipment interface module will also come with contractor branding capabilities, which is an option for Sensi smart thermostats and traditional White-Rodgers thermostats. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this episode of the HVAC School Podcast, Bryan shares his perspective on the growing trend of private equity buyouts and investments in the trades, particularly in home services businesses. He addresses the "buyout epidemic" with a balanced view, acknowledging the significant financial opportunities these deals present while expressing concerns about their long-term impact on the industry and its people. Bryan discusses how private equity firms are particularly attracted to home services businesses due to their potential for high margins, especially through implementing standardized processes, sales training, and often significant price increases. While he doesn't condemn the pursuit of profits or sales training, he emphasizes the importance of maintaining a balance between technical expertise and sales capabilities. He shares his own experience receiving numerous buyout offers for his company, Kalos Services, and explains why he consistently refuses them despite the potential for substantial financial gain. The podcast delves into deeper questions about the purpose of business ownership and the true value of money. Bryan characterizes money as "liquid value" or "liquid effort" - a means to an end rather than an end itself. He challenges business owners to consider whether selling to private equity aligns with their core values and the long-term interests of their employees, customers, and the trades industry as a whole. He suggests that rather than selling to outside investors who aim to extract value, owners might be better served by implementing improvements themselves and maintaining control over their business's direction and culture. Key topics covered in the podcast: The current wave of private equity investment in home services and trades businesses Different private equity strategies, including "roll-up" acquisitions The relationship between sales training, pricing, and profit margins in home services The importance of maintaining technical training alongside sales capabilities The concept of money as "liquid value" and its proper role in business The challenges of maintaining business values and culture under outside ownership The difference between ownership that understands the trades versus pure financial ownership The potential long-term consequences of concentrated corporate ownership in the trades The value of building sustainable, independently-owned businesses The importance of developing internal leadership rather than selling to outside investors The balance between profitability and maintaining quality service The risks of prioritizing short-term financial gains over long-term industry health Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this short podcast episode, Bryan talks about the standing pilot gas systems and the ignition strategy in gas-fired appliances. Standing pilots are very simple devices that are common in fuel logs, water heaters, and some pool heaters. These devices have a thermocouple or thermopile; in a thermocouple, two dissimilar metals are connected at one end, and there is an electron flow between the metals when one is heated up. A thermopile is a collection of thermocouples in series or parallel to generate more millivolt signals. (Both of these can be damaged if cleaned; don't mistake these for the flame rod! Flame rods can be cleaned with a delicate material.) To use a standing pilot, turn the dial to the pilot mode and press it in, which allows gas to come through the pilot. Then, you can light the gas (with a lighter or spark mechanism) and keep the dial depressed until there is enough heat generated on top of the thermocouple or thermopile, which allows it to lock in and keep the pilot lit (and pass the entire safety circuit). Then, you turn the gas valve on and let the main burner take over. If one safety is open, the entire circuit breaks to prevent unspent fuel from accumulating and causing a dangerous condition. One of the main challenges with standing pilots is that they are prone and very sensitive to corrosion due to the low voltage and current. Clean and tight connections can mitigate these risks. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

Jim takes us all the way through the history of furnaces, from the Stone Age when he was a child to modern modulating condensing types. The goal of a furnace is to move heat, so a furnace uses heat exchangers to facilitate heat transfer. Furnaces have primary and secondary air. The primary air goes through the burner, and the secondary air goes around the flame and is pulled in around the heat exchanger inlet. So, the flame's heat creates a draft that pulls air in. Natural gas and oil (LP/propane) furnaces are common nowadays, but we initially burned wood and coal in furnaces. The first gas furnaces came into existence by modifying coal, not from the gas lines we see nowadays. Long ago, the flue gases were also exhausted to the basement; CO poisoning was less of a concern back then, as combustion was usually complete. Burning the building was a much more severe risk. The first "gas crisis" in the 1970s forced us to focus on gas furnace efficiency. In that time, we developed spill switches and retrofit kits that converted furnaces over to spark ignition. In the 1980s, we came out with the draft-induced 80% furnaces we see nowadays. We also eliminated standing pilots and draft diverters. Even though the appliances became more efficient, we didn't actually burn the gas any more efficiently. So, despite the technological advancements we've made over the years, we don't actually burn gas any more efficiently than we did in the 1930s. However, our modern furnace technology has eliminated standby losses, controlled ignition, and focused on the role of latent heat in combustion. Jim also discusses: Flame color and types Draft hoods and diverters Products of complete combustion Excess air: a double-edged sword Natural ventilation Efficiency percentages Furnace testing and ratings Turbulators Modulation Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Take the HVAC School Industry Pulse Survey by WorkHero at https://hvacrschool.com/workhero. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this short podcast episode, Bryan talks about heat exchangers and temperature rise in gas furnaces, especially 80% open-combustion gas furnaces. Temperature rise is the difference between the return air temperature and supply air temperature; in cooling, we usually refer to this difference as a delta T or temperature split. The manufacturer sets a target range on the data plate; high-efficiency furnaces tend to have lower temperature rise targets than mid-efficiency or older furnaces. We want to heat the space and not waste heat on surfaces (like duct surfaces). For that reason, the goal is to stay in the middle of the temperature rise range or slightly on the lower side for peak efficiency, better heat transfer, proper airflow, proper venting, and protection of the heat exchanger. In mid-efficiency furnaces, we don't want the temperature rise to be too low, as cooler gases can condense. High-efficiency condensing furnaces have a dedicated condensate system, but 80% furnaces do not. That condensation can corrode the heat exchanger, which makes it vulnerable to cracks. Cracked heat exchangers may also happen when the temperature rise is too high, and they are dangerous due to carbon monoxide (CO) leaks; check for abnormal flame movement and color. Lower-temperature air is also uncomfortable if the registers are in locations where blowing air on people is inevitable. We can reduce the temperature rise by increasing the heating airflow, which can sometimes be done by re-tapping constant-torque and PSC motors or changing ECM settings. However, restrictive filters and ductwork may also cause that problem, and they need to be addressed. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Take the HVAC School Industry Pulse Survey by WorkHero at https://hvacrschool.com/industrypulse. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this episode of the HVAC School podcast, Bryan shares his "Manufacturer Responsibility Manifesto," a document he wrote over two years ago but held back from publishing until now. The manifesto addresses growing concerns about the burden being placed on HVAC contractors, particularly smaller businesses, due to manufacturing quality issues and warranty policies. The industry has undergone significant changes since the 1990s, including stricter refrigerant regulations and an increase in parts failures. While manufacturers offer longer warranty periods now than in the past (often 10+ years compared to 3-5 years previously), these warranties often don't cover crucial expenses like refrigerant, brazing rods, fittings, and labor costs. This leaves contractors in a difficult position of either absorbing these costs or charging customers and potentially damaging relationships. The manifesto calls for manufacturers to take greater responsibility for their products, particularly during the warranty period. Bryan proposes that manufacturers should reimburse contractors for total costs (including labor) for manufacturer-caused repairs within the first year, and cover parts and ancillary materials (including refrigerant) during the subsequent warranty period. He argues that this would incentivize manufacturers to improve product quality and reduce environmental impact, as they would bear more of the financial responsibility for failures and refrigerant losses. Key topics covered in the podcast: &]:mt-2 list-disc space-y-2 pl-8"> Evolution of HVAC industry regulations since the 1990s Increase in parts failures compared to previous decades Impact of global supply chain issues on part quality and availability Environmental concerns regarding refrigerant leaks and equipment waste Warranty coverage limitations and their impact on contractors Disparity between domestic and overseas manufacturing quality Financial burden on small contracting businesses Need for clear standards to differentiate manufacturer vs contractor-caused failures Proposal for comprehensive warranty coverage including ancillary materials Environmental responsibility and accountability in manufacturing Role of manufacturers in industry sustainability Impact of private equity and large companies on the industry Need for improved quality control in manufacturing Relationship between warranty policies and contractor-customer trust Call for industry-wide collaboration to implement changes Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Take the HVAC School Industry Pulse Survey by WorkHero at https://hvacrschool.com/industrypulse. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this short Q&A podcast episode, Bryan answers a listener-submitted question and gives some of his tips for moving to HVAC sales from field technician/installer roles. The world of sales has a different pay structure, which makes it an appealing option to many technicians. Salespeople need to be able to have money conversations with confidence and not be afraid to talk about pricing. You can practice these conversations with friends or fellow technicians, including answering questions and responding to objections. Sales confidence is another key to success in sales. Many successful sales techs go into sales with the assumption that the client wants to work with them and aren't timid because they're confident they'll make the sale. Great salespeople also seek out feedback to learn and grow from. Many great salespeople in the HVAC industry also benefit from learning about load calculations, equipment selection, and duct design, particularly via the ACCA manuals and software like Wrightsoft and Kwik Model 3D. The HVAC Grapevine, NCI, and TEC all have great educational resources about building science. Deploying test instruments, including blower doors, duct blasters, and thermal imaging cameras, also gives you vital information about the structure and shows clients that you're going above and beyond for their comfort; you're delivering quality and doing so with integrity. Communication skills are a crucial part of sales, and the best thing you can do to start honing your communication skills is to ask good questions and listen for valuable answers. Empathy is also important in sales, and it's most effective when you can understand your client's priorities. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Take the HVAC School Industry Pulse Survey by WorkHero at https://hvacrschool.com/industrypulse. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

This unique podcast episode is a commentary on the phenomenon of "white shirt techs" in the HVAC industry - a term that refers to technicians who focus heavily on sales and maintaining a pristine appearance rather than technical expertise. While there's nothing inherently wrong with having good sales skills or maintaining a professional appearance, there needs to be a balance with actual technical competency. The episode serves as part of a manifesto series heading into 2025, addressing important industry trends and concerns. There is a delicate balance between sales and service in the HVAC industry, particularly in residential services. Some companies and technicians may prioritize metrics like average ticket price and five-star reviews over providing genuine solutions to customers' problems. While it's important to discuss money and options with clients, we shouldn't resort to fear tactics or make promises that products can't fulfill, particularly in areas like indoor air quality solutions and UV lights. The podcast raises important questions about professional identity and integrity in the HVAC field. Technicians should occasionally step back and think about whether they've lost their passion for actually fixing equipment and solving technical problems in favor of focusing solely on sales. He argues that the best residential technicians maintain their interest in the mechanical aspects of the work, even as they develop their customer service and sales skills. The episode concludes with a call for technicians and companies to invest more time in technical training and to maintain their commitment to solving real problems rather than just selling solutions. Key Topics Covered: &]:mt-2 list-disc space-y-2 pl-8"> Definition and characteristics of "white shirt technicians" The balance between sales skills and technical expertise Problems with fear-based selling and overpromising in HVAC The importance of third-party verification for product claims Discussion of specific products like surge protectors and UV lights The role of maintenance agreements and their value proposition The future sustainability of sales-first business models The importance of maintaining passion for the technical aspects of HVAC Professional appearance versus technical competency The relationship between pricing and actual value delivered The role of customer reviews and their potential manipulation Training priorities: technical skills versus sales techniques Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this short podcast episode, Bryan answers a listener-submitted question about double flares and their application in the HVAC/R industry. Flare connections are common in certain types of equipment, and they connect the copper to the appliance. As a result, when we make a flare, our goal is to make it leak-free. A regular flare requires you to cut the copper, clean it, put the flare nut on, and make the flare with a flaring block (or a flaring tool). You can also put a little bit of oil on the flare cone to prevent galling. Modern power flaring tools are common nowadays, especially in markets where we install a lot of mini-splits. We also use torque wrenches to tighten the flare connection according to the manufacturer's specs. In mission-critical applications where we have toxic or flammable refrigerants under high pressure, we especially want leak-free connections. Double flares make more sense in these scenarios for extra security (though we may use different connection types). A double flare requires you to use a double-flare die that flares over the edge, though those double-flare dies are more common in older flaring kits and may not exist for power tools or spin tools. Double flares are usually less practical than other alternatives that exist on the market. For example, some manufacturers make flare gaskets to reduce the likelihood of leaks, and these are functionally similar to a double flare. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this episode of the HVAC School Podcast, Bryan interviews Zach about duct coatings and their applications in HVAC systems, particularly focusing on the Hardcast RE500 product. The discussion delves into the importance of proper duct coating applications and their benefits for both contractors and customers. Zach, who has extensive experience in duct cleaning and restoration, shares his expertise on the proper application and benefits of duct coating systems. The conversation explores how modern ductboard comes with a clear coat that offers some protection, but additional coating can provide significant benefits, especially in high-velocity areas near equipment. They discuss how coating creates a smoother, more cleanable surface that's almost comparable to sheet metal in terms of friction resistance. Zach emphasizes that coating should only be applied after proper cleaning, as it's not meant to cover up dirty ducts but rather to protect and improve cleaned surfaces. A significant portion of the discussion centers around the practical applications for HVAC contractors, particularly during equipment changeouts. Bryan proposes the idea of coating the first 5-10 feet of ductwork near equipment during changeouts, as these areas experience the highest velocity and are most susceptible to fiber shedding and moisture issues. The conversation also addresses the cost-effectiveness of coating versus replacement, with the coating being approximately one-fourth to one-fifth the cost of replacement. Key Topics Covered: &]:mt-2 list-disc space-y-2 pl-8"> Hardcast RE500 duct coating product and its applications Benefits of duct coating, including reduced friction, fiber containment, and improved cleanability The importance of proper surface preparation before coating application Comparison between coated ductboard and sheet metal surfaces Drying and curing times for duct coatings The relationship between duct cleaning and coating services Cost comparison between coating and replacement Special considerations for coastal environments NADCA certification and training requirements The importance of proper application techniques and professional certification Health and safety considerations regarding fiberglass ductwork The role of duct coating in preventative maintenance Application methods, including airless sprayer and brush/bucket techniques Quality control and industry standards for duct coating Learn more about NADCA at https://nadca.com/. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android

In this short Q&A podcast episode, Bryan answers a listener-submitted question about metacognition and more about critical thinking, reflective analysis, and challenging biases. Metacognition is the ability to think about thinking; it's about breaking things down, noticing your own thoughts, and understanding the "why" behind their thoughts. Metacognition is beneficial when applied to the "wide" aspects of the "wide-narrow-wide" mindset; it helps with broad analysis and is less useful during the narrow phase when you want a flow state. Unpacking our biases is useful, but it's most important in positions of power. Biases and assumptions have the most widespread effect when they're leveraged on others by authority figures, but they show up in any position of power (or lack thereof). Many of these are baked into us as mental shortcuts called heuristics, which are the same things that tell us not to touch stoves for survival; they're ingrained, but we have to be able to challenge those and unpack the reasons when it comes to assumptions about other people. However, this activity is time-consuming and not best used in situations where immediate action is needed. Humans have a strong proclivity for pattern recognition for survival reasons. However, one of the downsides of strong pattern recognition is the risk of associating correlation and causation without taking the proper investigative steps to confirm the relationship between things. The scientific method exists to test a hypothesis and explore the relationship between things in our world. Learning and being open to complex relationships are components of a great mindset to apply to HVAC work as well, and humility and curiosity are at the forefront. Franco, Zeno E., Kathy Blau, and Philip G. Zimbardo. "Heroism: A conceptual analysis and differentiation between heroic action and altruism." Review of general psychology 15.2 (2011): 99-113. https://doi.org/10.1037/a0022672 Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

In today's podcast, Bryan talks with legendary Hydronics author and trainer Dan Holohan about the history of steam heating and some practical applications of old ideas. Recently, Dan has been working on more novels, having published two of them over the past few months. Steam heating is a "lost art" nowadays; it has become increasingly uncommon and has been disappearing since the Vietnam War. Many people who understood steam heating either retired or died after the Vietnam War. Many elements of steam heating are difficult to understand or surprising. (For example, steam pressure has a surprising relationship with velocity: low-pressure steam moves through piping much more quickly than high-pressure steam.) So, Dan Holohan is on a mission to revive that knowledge and teach the newer generations about the lost art. There are many older steam heating systems still operating today, especially in the older large buildings in New York. Dan learned a lot about steam heating when working on these old systems and optimizing them. Most of the time, he optimized those systems by removing unnecessary accessories, not by adding components like steam traps. Many old boilers used coal as a heat source. Nowadays, many old boilers have been fitted with conversion oil burners with thermostats, but they are still piped for coal. Some systems now have multiple risers or massive vents on the main riser to prevent the thermostats from getting too hot too early and satisfying the thermostat too early. We call that master venting, which reduces pressure and allows steam to move very quickly and efficiently. Dan also discusses: The 2-PSI standard Transportation metaphors for BTUs in steam Harmful renovations for old boilers Replacement vs. restoration mindsets Gaps in steam boiler education Monopolizing the market if you HAVE the education Boiler piping and venting Two-pipe vs one-pipe steam Find out more about Dan and hydronic heating at HeatingHelp.com. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

In this short Q&A podcast episode, Bryan answers a listener-submitted question about superheat, including what it is and how we measure it. Superheat is the number of degrees a refrigerant is above its saturation point. The saturation point is where you will have a liquid-vapor mix, so superheat only exists when a substance is a vapor. Saturated refrigerant should only exist in the evaporator and condenser, during which it is being boiled or condensed. We usually measure superheat at the evaporator coil outlet and compressor inlet. The superheat at the evaporator outlet is usually around 5-14 degrees Fahrenheit, and it's often between 10 and 20 degrees at the compressor inlet (compressor superheat). However, many systems try to get lower superheat values, and some manufacturers may require higher superheat values at the compressor inlet to prevent liquid refrigerant from getting into the compressor. Accumulators can help keep liquid refrigerant out of the system as well. We may also measure superheat coming out of the compressor on the discharge line (discharge superheat); this superheat may exceed 100 degrees Fahrenheit. Discharge superheat can let you know if the compressor is overheating the oil and causing breakdown or carbonization. We use superheat to set the charge for fixed-orifice metering devices (as opposed to subcooling for TXVs), as superheat is a measure of how well we're feeding our evaporator coil. When the system is off, the superheat will be 0. A system will equalize, and the refrigerant will be at saturation when that happens. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

In this episode of the HVAC School podcast, Bryan interviews Zach from Southeast Clean Air Solutions about the intricacies of professional duct cleaning. Zach specializes in addressing duct cleaning challenges specific to the Southeastern climate, with a particular focus on fiberglass-lined ducts. The conversation delves into the complexities of cleaning different types of duct systems, highlighting the significant variations in time, technique, and approach depending on the duct materials and home configuration. The discussion reveals that duct cleaning is far more nuanced than many homeowners realize. A typical residential duct cleaning can take between six to eight hours, with metal ductwork being significantly faster to clean than flexible ducts or fiberglass-lined systems. Zach emphasizes the importance of careful cleaning techniques, especially with delicate flex ducts that can easily be punctured or damaged during the cleaning process. He recommends a two-person approach, with one team member working inside the home and another in the attic or crawl space to ensure thorough and safe cleaning. Beyond the cleaning process, the podcast explores critical maintenance strategies for maintaining clean and efficient HVAC systems. Zach and Bryan discuss the importance of proper filtration, home maintenance, and understanding when duct cleaning is truly necessary. They challenge the common misconception of a fixed cleaning schedule, instead advocating for system assessment based on specific conditions like household dust, humidity, and the health needs of home occupants. Key Topics Covered: &]:mt-2 list-disc space-y-2 pl-8"> Duct cleaning techniques for different duct materials (metal, flexible, fiberglass-lined) Time requirements for professional duct cleaning Challenges of cleaning ducts in various home configurations Importance of proper filtration and maintenance Factors determining duct cleaning frequency Risks associated with poorly maintained duct systems Two-person approach to thorough and safe duct cleaning Specialized considerations for homes in humid climates Post-cleaning sealant application for fiberglass-lined ducts Learn more about NADCA and find certified duct cleaning contractors at https://nadca.com/. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

In this short podcast, Bryan talks about electric vehicles and whether EVs present an opportunity for HVAC technicians. The residential sales lead at Kalos recently mentioned that keeping an EV in a conditioned garage is advantageous, and it's an upgrade we can offer our customers. In hot weather, EV battery performance and health can be degraded. On top of that, the vehicle consumes power when the vehicle gets hot so that the A/C can control the climate inside the car and preserve the interior. Most people also charge their electric vehicles in the garage at night, so it would stand to reason that conditioning the garage can yield energy savings and improve vehicle longevity. Attic encapsulation above the garage is also an option to limit warm, moist attic air from leaking into the garage; HVAC upgrades can include using closed-cell foam to encapsulate the attic and install a dehumidifier in there. Conditioning a garage requires you to think about insulation. In our market (Florida), block walls don't insulate very well. Even when we can't do very much with the walls, we can usually use some polyiso boards inside the garage. However, we could get some moisture challenges, and carbon monoxide could be an issue if combustion appliances are in the garage (like furnaces, water heaters, or gas-powered cars). We can recommend using heat pump water heaters, and we should quote a low-level CO monitor in cases when garages have a CO risk. It's important to make sure the garage remains separate from the rest of the house even when we do these upgrades. Keeping the garage separate helps prevent chemicals from getting into the airstream, especially yard chemicals or cleaners. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

The podcast delves into the world of HVAC chemical solutions through an in-depth conversation with Becca Stamey, the marketing director at Refrigeration Technologies. The discussion provides insights into the company's unique approach to developing cleaning products, rooted in a commitment to safety, effectiveness, and customer feedback. Founded by John Pastorello, a chemist turned HVAC technician, the company has always prioritized creating products that are non-toxic, non-corrosive, and environmentally friendly. Becca highlights the range of Viper products, from condenser and evaporator cleaners to pan and drain sprays and all-purpose cleaners. Each product is carefully formulated with specific purposes in mind, such as the enzyme-based evaporator cleaner designed to address odor issues and break down biofilm. The conversation emphasizes the company's innovative packaging, particularly the Venom Packs, which offer concentrated, durable, and space-efficient solutions for technicians. The podcast also underscores the company's commitment to quality control, with U.S. manufacturing and personal oversight from the leadership team. The episode provides a behind-the-scenes look at Refrigeration Technologies' growth and dedication to the HVAC community. The company has been named to the Inc. 5000 list of top-growing companies for three consecutive years and is expanding its manufacturing capabilities. Becca discusses the company's social media presence and community engagement, including their "Tech of the Month" program, which highlights and celebrates HVAC technicians who embody the company's values. Key Topics Covered: &]:mt-2 list-disc space-y-2 pl-8"> Viper's chemical product line and unique formulations Condenser and evaporator cleaning solutions Innovative Venom Pack packaging Importance of non-toxic, environmentally friendly cleaning products Company's manufacturing process and quality control Social media engagement and community recognition Recent company growth and expansion Upcoming appearances at industry events like AHR Expo Learn more about Refrigeration Technologies at https://www.refrigtech.com/. You can also follow Refrigeration Technologies on Instagram, LinkedIn, Facebook, YouTube, and TikTok (ViperHVAC). Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

In this short podcast, Bryan talks about evaporator coil placement based on a question submitted by a listener, John. Evap coil placement differs in furnace applications versus air handlers. When we use air conditioners with furnaces, we usually put evaporator coils on the positive side to protect the heat exchanger from rusting out during the summer (due to condensation and the chemical reactions that can occur with the metal heat exchanger). However, when it comes to air handlers, they're usually on the negative side. The coil is usually on the negative side of a fan coil or air handler because it keeps the blower motor cooler (though that doesn't make a huge difference in terms of performance). The HVAC system will lose fewer BTUs to leakage when the coil is on the negative side, which is better for energy efficiency; those BTUs can reach the conditioned space rather than the closet, garage, or wherever it is stored. Pulling air over the evaporator coil on the negative side, however, could potentially lead to greater turbulence. We run into challenges with evap coil placement on gas furnaces when we have dual fuel systems (a heat pump and furnace working together). You can't run gas heat over a heat pump coil due to the high head pressure, so a parallel setup would avoid the risks of high head pressure (downstream) or rusted-out heat exchangers (upstream). Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

In this episode of the HVAC School Podcast, Bryan interviews Zachary Ortwine, a duct cleaning professional who provides insights into ethical duct cleaning practices. The conversation delves deep into the complexities of cleaning different types of ductwork, the importance of proper assessment, and the potential challenges in maintaining indoor air quality. Zach emphasizes the critical role of thorough inspection and honest communication with clients. He explains that not all duct systems are equally cleanable, and professionals must carefully assess factors like duct material, contaminant type, and cleaning feasibility. Metal ducts can be cleaned more aggressively, while fiberglass ducts require a more delicate approach. The discussion highlights the importance of understanding the underlying issues that contribute to indoor air quality problems, such as system design, maintenance, and home living conditions. The podcast explores the evolution of duct cleaning technologies and safety considerations. Zach shares insights into modern fiberglass materials, which have improved safety compared to older versions, and discusses the importance of proper cleaning and coating techniques. The conversation also touches on broader indoor air quality challenges, including the impact of tighter building envelopes, ventilation issues, and the potential health risks of prolonged exposure to indoor contaminants. Key Topics Covered: &]:mt-2 list-disc space-y-2 pl-8"> Ethical considerations in duct cleaning Assessment techniques for determining cleanability Different duct materials (metal, flex, fiberglass) and cleaning approaches Indoor air quality challenges in modern homes NADCA (National Air Duct Cleaners Association) standards Importance of technician certification and experience Ventilation and its impact on indoor air quality Proper testing and verification of cleaning results Coating techniques for fiberglass ducts Misconceptions about antimicrobial treatments Learn more about NADCA and certified professionals at https://nadca.com/. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

In this short podcast episode, Zach joins Bryan to answer a common duct maintenance question: Should I fog or sanitize my ducts? The National Air Duct Cleaners Association (NADCA) outlines the uses of chemical products. Adding chemicals is usually a last resort in flex or sheet metal (externally wrapped) duct systems; they should NOT be used on ducts with internal liners or are made of duct board or any other material with porous surfaces. Fog is typically applied while a vacuum is running at the opposite end of the duct. It liquefies on surfaces, and a lot of contractors don't go in and dry off the duct surfaces. It's difficult to coat the entire interior of a duct system with the chemical to make it as effective as possible, and the residue creates a moist, sticky film that actually encourages microbial growth in the ductwork. On top of that, some people may be sensitive to the chemicals. In many cases, replacing ductwork that has been confirmed to have microbial growth is more reliable. Chemical duct sanitation often has more of a perceived benefit than long-term results. The use of chemical cleaners in ductwork is similar to that of using some line set flushes without forcing a solid pig through the line set to pick up the residue afterward. Ultimately, the customer has to make an informed decision based on the problem and knowledge of the benefits and drawbacks of chemical solutions. NADCA's white papers, including "Chemical Product Applications in HVAC Systems," are available at https://nadca.com/industry-professionals/nadca-white-papers. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

Bryan and Craig Migliaccio (AC Service Tech)dive deep into the complexities of managing condensate drainage in high-efficiency (90%+) gas furnaces. The conversation begins with a clear explanation of why these furnaces produce condensate in the first place - they have two heat exchangers that extract so much heat from the combustion gases that water vapor condenses out. This condensate is acidic (pH 3-5) and requires special consideration for drainage and disposal. The discussion explores various challenges contractors face when installing these systems, particularly in cold climates where freezing is a concern. Craig shares practical solutions from his experience in New Jersey, including using larger diameter pipes for exterior drainage and creating air gaps to prevent complete freezing. They address the ongoing debate about whether to combine AC condensate lines with furnace condensate lines, noting that while it's technically possible, there are potential risks and code considerations to keep in mind. A significant portion of the conversation focuses on code compliance and best practices for condensate disposal. The International Mechanical Code (IMC) provides several acceptable options for drainage, including floor drains, utility sinks, and standpipes. However, as Craig points out, local interpretations and requirements can vary significantly, making it crucial for contractors to maintain good relationships with their local inspectors and understand their specific jurisdiction's requirements. Key Topics Covered: &]:mt-2 list-disc space-y-2 pl-8"> How 90% efficient furnaces produce condensate through their dual heat exchanger system The acidic nature of furnace condensate and its corrosion potential Solutions for preventing condensate line freezing in cold climates Pros and cons of combining AC and furnace condensate lines Code-compliant drainage options (IMC 307.2) Use of condensate pumps as a solution for difficult drainage situations Importance of proper trapping and venting in condensate systems Requirements for auxiliary drain pans under furnaces Role of condensate switches and safety controls Challenges with different installation locations (crawl spaces, basements, etc.) Considerations for neutralizer usage when draining into septic systems Best practices for maintaining professional relationships with code officials Check out some of Craig's great educational books at https://www.acservicetech.com/. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

In this unique episode of the HVAC School podcast, Bryan interviews Donovan Ryckis, CEO of Ethos Benefits, diving deep into the complex world of healthcare financing and employee benefits. Ryckis shares his journey from financial advising to becoming a healthcare benefits consultant, driven by a mission to expose and transform the inherently problematic healthcare system. The conversation reveals the stark inefficiencies in traditional healthcare models, where insurance companies and healthcare providers often prioritize profit over patient care. Ryckis explains how most employers have been led to believe they cannot control healthcare costs, accepting annual increases as inevitable. By applying a fiduciary approach—similar to financial advising—Ethos Benefits helps companies like Kalos dramatically reduce healthcare expenses while maintaining or improving employee care. A key highlight of the discussion is the innovative strategies Ethos implements, such as negotiating directly with healthcare providers, exposing pharmacy benefit manager markup, and implementing direct primary care. These approaches not only reduce costs but also provide employees with better, more personalized healthcare experiences. The podcast demonstrates that by taking a transparent, data-driven approach, companies can create win-win healthcare solutions that benefit both the organization and its employees. Key Topics Covered: &]:mt-2 list-disc space-y-2 pl-8"> Healthcare financing vs. traditional insurance models Pharmacy benefit manager markup and hidden costs Negotiating medical claims and reducing excessive billing Direct primary care and its benefits Strategies for controlling healthcare expenses Importance of transparency in healthcare pricing The documentary "It's Not Personal, It's Just Healthcare" Challenges in the current healthcare system Empowering employees through better healthcare options Learn more about Ethos Benefits at https://ethosbenefits.com/ and the Ethos Effect Podcast at https://www.ethoseffectpodcast.com/. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

Chris Hughes and Steve Rogers from The Energy Conservatory discuss TEC's TrueFlow technology and its crucial role in predicting airflow issues in the sales process, particularly for heat pump retrofits. They explain how the TrueFlow app helps contractors accurately measure both static pressure and airflow in existing systems, enabling them to predict whether proposed equipment changes will work effectively. This is especially vital when considering the growing trend of replacing gas furnaces with heat pumps, as the airflow requirements can differ significantly. The conversation delves into a detailed example of replacing an 80% efficient 48,000 BTU furnace with a heat pump. They demonstrate how the airflow requirement would nearly double from 652 CFM to 1,200 CFM, potentially causing the static pressure to quadruple due to Fan Law 2 principles. This dramatic increase could lead to significant performance issues if not properly addressed during the system design phase. The experts emphasize that using TrueFlow during the sales process allows contractors to identify potential problems and necessary modifications before installation rather than discovering issues during callbacks. The discussion also covers the ideal workflow for system assessment and sales, starting with customer comfort evaluation and proper load calculations. It's important to reduce loads through envelope improvements when possible, particularly in cold climates where heat pump retrofits are becoming more common. Proper system sizing often means going smaller rather than larger, contrary to common industry practices, and the worst HVAC systems are often found in expensive custom homes rather than tract housing. Key Topics Covered: &]:mt-2 list-disc space-y-2 pl-8"> TrueFlow technology and its role in system forecasting Fan Law 2 and its impact on static pressure when changing airflow Heat pump retrofit challenges and considerations The importance of accurate load calculations Dual fuel systems as a solution for cold climates The relationship between airflow and static pressure Sales process integration of technical measurements Common issues with oversized equipment The importance of envelope assessment Methods for reducing system loads Proper duct sizing and modification strategies The role of proper filter sizing and selection The benefits of flat-rate pricing for duct modifications Training resources and support available for TrueFlow users Check out TEC's YouTube channel at https://www.youtube.com/@energyconservatory, and you can visit TEC's website at https://energyconservatory.com/. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

In this short podcast episode, Bryan and Mike from DITEK talk about what to do in tricky electrical scenarios, such as when the MCA is 27 and you have a 50A breaker. When you size an HVAC system for compatibility with voltage monitors, like the DITEK Kool Guard, you need to pay attention to the MCA (minimum circuit ampacity), which should not be confused with MOCP (maximum overcurrent protection or breaker size). As long as the MCA is 40 amps or lower, you can attach the HVAC condenser to the Kool Guard. The KG2 also accepts wire sizes up to 6 AWG. The Kool Guard is NOT a source of overcurrent protection; it is a voltage monitor rated for carrying current, which means ratings will be in MCA, not MOCP. MOCP is designed to deal with high starting amps and lets users know the maximum allowable current for a circuit so that it can trip properly when that current is exceeded. According to Section 440 of the National Electrical Code (NEC), motors with internal overload protection allow for a difference between the MCA and MOCP. You may find higher MOCPs on inverter-driven systems. Learn more about DITEK at https://www.diteksurgeprotection.com/. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

Bryan discusses surge protection devices (SPDs) with Mike from DITEK, focusing on practical applications for HVAC contractors and how to provide value to clients. Mike emphasizes that surge protection is essential for modern HVAC systems, particularly given that they are typically the most expensive appliance in a home and increasingly rely on sophisticated electronic components like variable-speed compressors and inverter boards. The conversation delves into installation best practices, with a detailed discussion of proper wiring techniques for SPDs. Mike explains that surge protectors should be installed in parallel with the circuit, typically at the disconnect, and addresses common concerns about double-tapping lugs and ground connections. He emphasizes the importance of keeping wire lengths as short as possible and provides guidance for installations both with dedicated disconnects and panel-direct connections. A significant portion of the episode focuses on DITEK's Kool Guard (KG2) product, which represents an evolution in HVAC protection by combining surge protection with voltage monitoring. Mike explains how modern HVAC equipment, particularly inverter-driven systems, is increasingly sensitive to both over-voltage and under-voltage conditions. The Kool Guard monitors voltage on each phase independently and provides visual indication of fault conditions through LED indicators, making it easier for homeowners to identify potential issues without opening electrical enclosures. Key Topics Covered: · Why every modern HVAC system needs surge protection · Installation locations and proper wiring techniques for SPDs · The difference between line-side and load-side installation · Ground connection best practices · How to protect both condensers and air handlers · The evolution from basic surge protection to voltage monitoring · The importance of voltage monitoring for modern inverter-driven equipment · How Kool Guard monitors voltage phase-to-ground vs line-to-line · Common power quality issues beyond lightning strikes · How to discuss surge protection with customers · The limitations of utility-provided surge protection · The impact of aging power infrastructure on power quality · The advantages of USA-made surge protection products · How voltage monitoring prevents damage from brownouts and over-voltage conditions · The pre-programmed voltage protection ranges in Kool Guard · Visual indication features for fault conditions Learn more about DITEK at https://www.diteksurgeprotection.com/. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

In this short episode, Bryan clears up the confusion behind pumping vs. compression. Pumping is usually associated with liquid. Liquid, like vapor, is a fluid, but it's a lot denser and is essentially incompressible because the molecules are close together. Liquid volume varies based on temperature and density, but we can't squish the molecules together. That's why compressors with very little axial and radial compliance fail when flooded; they can't compress the liquid. A circulator pump in a hydronic system is an example of a pump that pushes liquid along, but the pressure difference across the pump is minimal compared to that of a compressor; the same is true of liquid vs. vapor CO2. However, vapor molecules are far apart and can be squished together to take up a smaller volume. That's why vapor can go through compressors, which take a fluid of one volume and apply pressure to shrink it to a smaller volume, raising the temperature in the process. Pneumatics, as opposed to hydraulics, utilize compression to move vapor around in a circuit. Recovery machines need to be able to compress vapor refrigerant and pump liquid into the recovery tank. Compressors and pumps can either be positive displacement or non-positive displacement systems. A positive displacement system creates a trap and forces a fixed amount of fluid through a system, like a scroll compressor or a circulator pump. Refrigerant volumes may vary because vapor density varies with temperature and pressure (the volume flow is the same, but the mass flow varies). A condensing fan motor, on the other hand, is dynamic and varies the volume of air it moves in response to pressure, as the mechanism relies on velocity and kinetic energy to move air. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

Trevor Matthews returns to the HVAC School Podcast to discuss building tech confidence and personal growth in the HVAC and refrigeration industry. The conversation explores the transformative power of self-investment, continuous learning, and maintaining a positive mindset. Trevor shares his personal journey from a hesitant technician to a successful business owner, highlighting the importance of pushing beyond comfort zones and embracing continuous improvement. Some fundamental mindset shifts are necessary for professional development. Trevor candidly discusses his early career struggles, including his initial fear of public speaking and technical challenges. He emphasizes that confidence isn't something that happens overnight but is built through consistent effort, studying, and maintaining a willingness to learn. The key to the growth mindset is to focus on personal progress instead of comparing your achievements to those of others, and it's a perspective that can dramatically impact professional and personal growth. Self-investment consists of dedicating time to learning, staying physically and mentally healthy, and maintaining a positive attitude, and it can open up unprecedented opportunities. Many technicians have transformed their careers by adopting a growth mindset, continuously seeking knowledge, and being willing to step outside their comfort zones. Key Topics Covered: Building professional confidence The importance of continuous learning Overcoming fear and self-doubt in technical careers Strategies for personal and professional growth Maintaining a positive mindset Investing in self-improvement Balancing work, health, and personal development The power of small, consistent actions Avoiding comparison with others Techniques for staying motivated Recommended resources for personal development Recommended Resources Mentioned: Book: "Limitless" by Jim Kwik Book: "Good to Great" by Jim Collins Book: "Think and Grow Rich" by Napoleon Hill Book: "Mastery" by Robert Greene Podcast: Hidden Brain Podcast: AC Service Tech Check out Refrigeration Mentor at https://refrigerationmentor.com/ or email Trevor at [email protected]. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

In this short podcast episode, Bryan talks about the CPS Molecular Transformator and what it does. The Molecular Transformator is a version of a tube-in-shell heat exchanger, which is a method of exchanging heat from one fluid medium to another fluid medium. Tubes containing a fluid pass through a shell containing water or glycol, and there is a heat exchange between that secondary fluid and the fluid being circulated in the tubes. In a Molecular Transformator, the fluid being circulated is recovered refrigerant, and the secondary fluid is water (in a bucket), which absorbs heat from the refrigerant and cools it down to make sure that the refrigerant enters the recovery tank as a liquid. Refrigerant recovery machines have condensers inside of them, but they are quite small and don't hold a lot of refrigerant by design; many recovery machines use microchannel coils. A lot of the time, the refrigerant leaving a recovery machine is a liquid-vapor mix and too high-temperature; a lot of people run a hose over the tank or put it in a bucket of ice. The "Molecular Transformator" tries to settle the vapor molecules down into a liquid; it transforms the vapor molecules using the same mechanism as a tube-in-shell heat exchanger. The main issue is that there will be leftover refrigerant in the Molecular Transformator after recovery. However, you can mitigate this problem with ball valves and proper purging. Do so responsibly to avoid venting refrigerant. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

In this enlightening episode, we sit down with Mike, a 20-year veteran from DITEK, a leading American manufacturer of surge protection devices based in Largo, Florida. The conversation begins with a brief discussion about recent hurricane impacts in the Tampa Bay area, where DITEK maintains its 65,000-square-foot manufacturing facility. Mike shares how the company, despite facing challenging weather conditions, continued its operations and maintained its commitment to American manufacturing. The bulk of the discussion centers around surge protection technology and its critical importance in protecting HVAC systems and other electronic equipment. Mike provides an excellent analogy, comparing surge protectors to pressure relief valves for electrical systems. He explains how Metal Oxide Varistors (MOVs) work as semiconductors that create low impedance paths to ground when voltage exceeds certain thresholds. The conversation delves into the evolution of MOV technology, particularly the development of thermally protected MOVs that provide enhanced safety features. The episode also addresses common misconceptions about surge protection, particularly the belief that surge protectors are primarily for lightning protection. Mike explains that while lightning strikes are a concern, especially in areas like Florida, approximately 65% of surges actually originate from within facilities themselves, often from equipment cycling on and off or other power quality issues. He emphasizes the importance of proper installation, particularly regarding ground connections and lead lengths, noting that every six inches of wire length can add about 100 volts to the clamping voltage of the device. Key Topics Covered: DITEK's history and commitment to American manufacturing Basic principles of surge protection and how MOVs work Evolution of MOV technology and thermal protection features Difference between transient voltage and temporary overvoltage (TOV) Importance of proper grounding and lead length in surge protection Cascading surge protection strategy for comprehensive protection UL testing standards and voltage protection ratings (VPR) Common misconceptions about surge protection Impact of aging electrical infrastructure on power quality Importance of customer support and ethical business practices Installation best practices for surge protection devices Relationship between ground resistance and surge protector performance Types of surge protective devices (SPD) and their classifications Learn more about DITEK at https://www.diteksurgeprotection.com/. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

Bryan answers a listener-submitted question: "Am I toxic for caring?" He gives advice on how to maintain professional relationships while still maintaining very high standards of quality for your own work. Having high standards is great, but it can be frustrating when you perceive coworkers as having lower standards than you. A poor-quality end product is fairly objective, but other ways of judging coworkers' standards are a lot more subjective and may vary by culture, and we end up judging the person rather than the work. While we should care about the objective outcomes of a job, we want to challenge ourselves when we start comparing others' work to our own unfavorably. Judging others' work isn't inherently bad or "toxic," but it has to be controlled and done in service of something greater. When we confront others or judge their work, we need to make sure it comes from a place of professional pride (rather than personal pride) and personal humility. As tradespeople, we don't always do the best work, either. In some mission-critical applications, we need to rely on workarounds to get a quick outcome. In those situations, it's a lot more important to be honest about what we're doing and the value we promise. When we find opportunities for our colleagues to do things better, we can offer advice in service of the job and allow the other person to take it or leave it; we don't get to decide that for others. We also have to acknowledge that people have different natural inclinations, and we'd be wise to respect those differences. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

div]:bg-bg-300 [&_.ignore-pre-bg>div]:bg-transparent [&_pre]:-mr-4 md:[&_pre]:-mr-9"> _*]:min-w-0"> Ruchir Shah joins the podcast to share his journey into HVAC education technology and the founding of SkillCat, a comprehensive training platform for skilled trades. As a five-time entrepreneur in educational technology, Ruchir's path to HVAC was influenced by his earlier work studying the BP oil spill and developing training solutions for oil and gas workers. When COVID-19 hit and many skilled workers found themselves displaced, he recognized a broader pattern of declining income for blue-collar workers over the past 50 years, which led to the creation of SkillCat. The discussion delves into SkillCat's innovative approach to EPA 608 certification, making it more accessible and affordable at just $10 per month. Their platform uses phone-based testing with built-in security measures, achieving a 97-98% pass rate through comprehensive training. This system addresses traditional barriers like high costs, scheduling difficulties, and low pass rates that have historically made it challenging for people to enter the HVAC field. SkillCat and HVAC School have started a partnership. This collaboration aims to transform HVAC School's extensive content library into structured, accredited courses within the SkillCat platform. The partnership represents a marriage of HVAC School's technical expertise and industry insights with SkillCat's educational technology capabilities, making high-quality HVAC training more accessible and organized for both individual technicians and contracting companies. Key Topics Covered: SkillCat's origin story and mission to make trades education more accessible Revolutionary approach to EPA 608 certification testing and training Development of simulation-based training across HVAC, plumbing, and electrical trades Implementation of career pathing and progress tracking for technicians Importance of applied learning in trades education Features of SkillCat's apprenticeship program Integration of on-the-job assessments through the platform The role of educational technology in addressing the skilled trades shortage Continuous improvement approach based on user feedback Affordability and accessibility of trades education through mobile apps You can learn more about SkillCat by searching for it in the Google Play Store (Android) or App Store (iOS), or you can visit their website at https://www.skillcatapp.com/. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

In this short Q&A podcast, Bryan answers a listener-submitted question about apps for doing proper loads. Fred specifically asks about apps or charts that can help an HVAC contractor determine the insulation value of a home without assuming numbers or drilling into walls during load calculations. Load calculations account for all the ways that BTUs can enter or leave a home: conduction, convection, and radiation. Insulation prevents heat transfer via conduction, so it's important to the load calculation process. High-end HVAC design software like Wrightsoft and Kwik Model 3D will have these features built into them (based on the age and location of the home). ASHRAE's handbook also has tables and data with R-values and U-factors to help you out with Manual J load calculations. RED Calc is an app that allows you to calculate a wall's R-value with measurements, including surface and air temperatures indoors and outdoors. This RED Calc software is available through the U.S. Department of Energy, as is REScheck. The DOE insulation fact sheet is also quite valuable, as are The Engineering Toolbox and materials straight from the insulation manufacturers. The best way to get a comprehensive load calculation is to have a lot of tribal knowledge about how houses are built in your area, analyze energy bills, and combine tools like RED Calc with building performance tests. RED Calc is available through the U.S. DOE at https://basc.pnnl.gov/redcalc. REScheck is available at https://www.energycodes.gov/rescheck. ASHRAE's resources are available at https://ashrae.org/technical-resources. Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

Bryan sits down with Jim Bergmann at the NCI Summit in Asheville, North Carolina, to discuss the latest developments in HVAC technology, training, and industry trends. The discussion delves into the evolution of MeasureQuick 3.0, highlighting the shift back to a more technician-centric approach. Jim explains how they've redesigned the software to put gauges front and center and implemented an AI-driven system to guide technicians through the process step-by-step. This renewed focus on the end-user experience aims to make the product more valuable for technicians and, in turn, more likely to be adopted as part of standard operating procedures in HVAC companies. Jim and Bryan also explore the importance of understanding HVAC history and fundamentals. They discuss how revisiting old engineering books can provide valuable insights into the core principles of the industry, often explained in more accessible terms than modern textbooks. This approach to learning, combining practical experience with theoretical knowledge, is something both Jim and Bryan advocate for in technician training and development. The conversation then shifts to the challenges and opportunities in the HVAC industry, particularly in light of the push for electrification and the adoption of heat pump technology. Jim emphasizes the critical need for proper evacuation techniques and moisture removal in systems, especially for cold-climate heat pumps. He stresses the importance of standardized processes and documentation to ensure consistent quality in installations and maintenance. Topics covered in the podcast: MeasureQuick 3.0 updates and user interface improvements The importance of technician-centric product design Partnerships between MeasureQuick and organizations like NCI The value of understanding HVAC history and fundamentals Challenges and opportunities in adopting heat pump technology The critical importance of proper system evacuation techniques Standardizing processes for HVAC technicians in the field The role of technology in attracting younger workers to the HVAC industry The benefits of attending industry events like the NCI Summit The ongoing need for collaboration and knowledge sharing in the HVAC community Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.