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November 23, 2025
GFCI and AFCI Testing Explained | How to Test Ground Fault and Arc Fault Circuit Interrupters
Learn the essential skills for GFCI and AFCI testing using Klein Tools RT390 Circuit Analyzer in this comprehensive HVAC training. This video shows how to test Ground Fault and Arc Fault Circuit Interrupters in residential environments, covering everything technicians need to know about electrical safety testing.
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I admit it, I'm a sauna guy now. The ones at the gym are pretty gross, so I got a small one at home because I guess I’ve missed sitting in attics or something. If you’ve ever sat in a traditional sauna, you know the drill: the heat’s already intense, and then you or someone […]
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The ignitor of a furnace (or a gas pool heater or other gas-fired appliance) is the heat source, and it can come in one of four varieties: standing pilot, direct spark (DS), intermittent spark (ISI), and hot surface (HSI). We have a tech tip explaining each of these ignitor types in detail, but we’re going […]
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When most of us think about tools of the trade, a few main ones come to mind: manifold, multimeter, vacuum pumps, recovery machines… the list goes on. One that may NOT come up nearly as often as it probably should is the thermal imaging camera. A few symposiums ago, Bill Spohn and Eric “Elk” Kaiser […]
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