“Auxiliary heat” means the secondary heating source. You have the thermostat set to keep your maximum temperature at a certain point, at which the device providing heat turns off. Your thermostat has two possible heat sources, a main and an auxiliary. It depends on how the unit was wired which heat source is which. When Aux Heat is needed. At very low temperatures (usually below 32° F) heat pumps may need to rely on auxiliary heat. This happens for 1 or 2 reasons (or often both): The heat pump can’t get enough heat In the Phoenix area, this is very uncommon. But we do have the occasional winter night with a low in the 20s. More blog posts about heating and air conditioning: • The coils on my heat pump are covered with ice on cold mornings. What’s wrong with it? Explains how heat pumps work and what “AUX Heat” means when it shows up on your thermostat. A. Aux (auxiliary) Heat. The balance point (when it can no longer efficiently transfer heat from the outside air) of an air source heat pump, is usually about 35 degrees. The thermostat senses this and automatically turns on the electric heat strips to provide the additional heat needed. Heat Pumps and Electric Home Heating – Why is “Auxiliary Heat ” on instead of regular Heat? – I have a Honeywell Digital Thermostat that was installed by a .
Aux heat. Aux (Auxiliary) Heat mode is available only for heat pump equipment. Aux Heat mode means that heating is generated by a secondary (i.e. auxiliary) heat source rather than by the heat pump. Heat pumps are reversible air conditioning systems. In hot weather, heat pumps as air conditioners absorb heat inside a building and discharge it outside. With cold I just moved into a house that has a heat pump heating unit. Why does auxiliary heat have to come on to heat up my house? Why can’t it just heat up normally until it .
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