HVAC School - For Techs, By Techs

Auteur(s): Bryan Orr
  • Résumé

  • HVAC School is the ever growing online source for real training topics for technicians in the Air-conditioning, Heating and Ventilation Fields. In the podcast, we will share recorded training, tech ride alongs, share challenging diagnostic scenarios. All to help make the industry, your company, and your truck a better place to be.
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Épisodes
  • Heat Pumps / Comfort and Electrification w/ Copeland
    Feb 14 2025
    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 cycleElectrification and decarbonization initiativesCold climate heat pump capabilities and DOE challenge programVariable speed compressor technologyDifferent types of heat pumps (air source, ground source, water source)Defrost cycles and their importanceInstallation considerations for cold climatesVapor injection technology and its benefitsAvailable incentives and rebates for heat pump installationTroubleshooting tips for heat pump systemsLow-GWP refrigerant considerationsResource links for contractors and homeownersModern 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 appsCopeland 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
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    32 min
  • Efficiency and Production on Larger Projects
    Feb 13 2025

    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

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    48 min
  • Q&A - Circuit Board Troubleshooting - Short #230
    Feb 11 2025

    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

    Voir plus Voir moins
    11 min

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excellent

excellent in every way, down to earth, straight forward decent people trying to make their part of the world better by sharing their knowledge and experiences.

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