Zero Knievel Posted January 23, 2022 Share Posted January 23, 2022 At what temperature will the auxiliary heat kick in? I know that an A/C will struggle to cool once it’s X hot outside because it’s harder to discharge the thermal energy into the air, and likewise, a heat pump will struggle once it’s cold enough outside that there’s insufficient thermal energy to draw from the air. It’s in the low 20s. I didn’t turn up the gas heat, and I see no indication that the auxiliary heat came on. Thermostat was set to 69 degrees. It is a dry cold as compared to a damp cold. I’ve only seen the auxiliary heat indicator come on when trying to bump up the temperature by several degrees in on jump. If I go from 69 to 70 then from 70 to 71, it doesn’t kick in. Quote Link to comment Share on other sites More sharing options...
JoWhee Posted January 23, 2022 Share Posted January 23, 2022 Unless it's a new superefficient unit you should be on Aux heat at 20 degrees. If you're getting heat don't worry about it. I;m not going to explain the parameters for when the AUX heat comes on, I'm sure there are more than a few long and boring articles about it via google. Quote Link to comment Share on other sites More sharing options...
superhawk996 Posted January 24, 2022 Share Posted January 24, 2022 On 1/23/2022 at 3:37 AM, Zero Knievel said: At what temperature will the auxiliary heat kick in? When the unit decides that it's needed. Quote Link to comment Share on other sites More sharing options...
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