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Basic Refrigerant Circuit Course July 16, 2022, 3:20 am
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ECM, VFD, and Inverter - What's the Difference?
Ever since Nikola Tesla invented the modern induction motor, we have been struggling with varying the speed of motors efficiently and reliably. The trouble in the HVAC industry is that there are several different types of technologies in play, and they can easily get confused. ECM (electronically commutated motor) In residential and light commercial HVAC, […]Read more
Techs are Under Pressure
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Floating Suction and Head Pressure
This article was inspired by a podcast episode featuring Jeremy Smith. Jeremy is a refrigeration mechanic and has contributed a lot of good material to HVAC School. You can listen to that podcast on floating suction and head HERE. Those of you who drive your own vans are probably all too familiar with the following […]Read more