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qwer Basic Refrigerant Circuit Course January 11, 2022, 1:10 pm
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Negative Superheat? Time to Check Your Tools
I was fresh out of school, working as an apprentice at my first real HVAC job, and I was listening in on a shop conversation between a few techs. They were talking about finding so many overcharged systems. One of the techs turns to me and says, “I had a unit yesterday that was so […]Read more
What Makes an Autotransformer Different?
The definition of a transformer is a device that changes the voltages in an alternating current circuit. You may have heard of an autotransformer or a buck-boost transformer, and these terms are usually used for the same type of device; they just highlight different aspects. A transformer does not need to be a buck-boost to […]Read more
Infrared vs. Heated Diode Leak Detectors
Every HVAC/R tech needs an electronic leak detector nowadays, and with HFC refrigerants getting more and more commonplace, every HVAC/R tech needs a VERY sensitive electronic leak detector. We often see three types, but let's toss out the corona discharge leak detector right off the top. It just picks up too many other types of […]Read more