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HVAC School - For Techs, By Techs

Aug 29, 2019

Eric Kaiser joins the podcast again, and this time, we are talking ECM motors. We discuss types, history, diagnosis, and failure prevention.

An ECM motor has a permanent magnet rotor, which means that the magnetism never deactivates. The variable frequency-driven motor is typically an induction motor, and the rotor...

Aug 29, 2019

In this lively discussion, representatives from Chemours and Bluon Energy join the podcast. They talk about retrofit refrigerants and what to look for in a good retrofit.

The R22 phaseout has been on the agenda for a long time due to its ozone-depleting potential. However, R-410A is also due for a phase-down in the...

Aug 27, 2019

In this short podcast episode, Bryan discusses the importance of the trap and vent in condensate drains. He also describes some trapping and venting best practices.

Anytime you have long runs of horizontal drains, you run the risk of having a double-trap. A double-trap creates a water seal, which traps air between the...

Aug 22, 2019

In this live podcast episode, Bryan talks through real home IAQ solutions with Jim Bergmann and others. They also answer audience questions. Indoor air quality is a place where the HVAC and building science industries intersect, so it is an important topic for occupant health and comfort.

Home IAQ is much more holistic...

Aug 22, 2019

Craig of AC Service Tech on YouTube joins Bryan on the podcast to explain how to charge an A/C unit. He also discusses his excellent new book.

Before you start charging a unit, you must know about superheat, subcooling, and other means of determining how much charge is already in the system. You must also know how the...