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November 8, 2026
Heat Pump Heating Checks: Thermostat, Aux Heat, Pressures
When a heat pump is running in heating mode, the readings and checks look different from cooling, and that’s where a lot of techs go wrong. In this video, Bryan Orr goes through the key heat pump checks to make before and during heating season, from the thermostat to the gauges.
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The photo above is of a real condenser coil we cleaned. The outer fins looked OK, but dirt and lint were packed deep inside. We also had sky-high head pressure and condensing temperature; those are telltale signs of an impacted condenser. That situation illustrates that a coil can sometimes look OK at first glance but […]
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In some recent classes at Kalos, we’ve been going over finding target pressures and temperatures for an air conditioning system. The goal is to get techs to have “target” readings in mind before they start connecting tools. This step is an important part of being able to “check a system without gauges,” as we have […]
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One aspect of motor selection that can get overlooked is motor bearings, and it can have big consequences. Sleeve bearings are most common in residential and light commercial applications because they are less expensive and quieter. They don’t have rolling “balls” but rather rely on a thin film of oil on metal sleeves. Sleeve bearings […]
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