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HVAC School - For Techs, By Techs

Sep 29, 2016

In this episode of HVAC School, I talk with my brother Nathan... and he whines a lot about cool tools I like.

As you might have guessed, Nathan is in the camp of people who believe that proper training promotes good practices; fancy tools won't make an outstanding tech. Even though I respectfully disagree with him on...


Sep 22, 2016

In this episode of HVAC School, Bryan talks to some apprentices about basic thermodynamics. That is the fancy scientific way of saying that we're moving heat.

The way we think of "hot" and "cold" is relative to our comfort. However, the scientific concepts of "hot" and "cold" are very different from our relative...


Sep 16, 2016

In this episode of HVAC School, Bryan talks to Leslie about the deceptive TXV.

Thermostatic expansion valves, also known as TXVs or TEVs, are metering devices that maintain superheat. They contain an external equalizer. External equalizers give the pressure reading that you would normally take with a suction gauge at...