Field Notes
Plain-language notes on components, circuits and how to read a schematic, written for people at the bench, not for a classroom.
Field Notes
Pressure Transducer Training Project
This training project is designed to provide a clear way to see how a pressure transducer operates and how they can be tested. Why does the Pressure Transducer Matter?...
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HVAC Thermistor Training Project
This training project is designed to show how bead thermistors and tube thermistors work, along with the difference in sensitivity between the two. Why does the Thermi...
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Mini Split LOUVER MOTOR Training Project
Explaining how a louver motor operates is much easier when you can watch the louver blade move, each step of the way. This project is meant to simplify the operation o...
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Where To Find R-22 & R-410A Leaks on AC Units! Top 10 Spots!
This article covers the ten most common locations where refrigerant leaks may be on an air conditioning system. An electronic leak detector is typically used to find t...
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Top Ten Interview Tips to Land that HVAC/R Job!
It is certainly important to have good training and/or experience in the field prior to applying for an HVAC/R position. However, some do not have HVAC/R experience an...
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10 Reasons a Blower Fan Won't Start in a Furnace, AC or Heat Pump
This article covers the 10 most common reasons the blower fan does not turn on! A blower motor may be installed in a forced air gas or oil furnace, air handler, or pac...
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