Why does my thermostat say aux?
Turning your thermostat to “heat” came with an unexpected “AUX” function appearing. What does it mean? The “AUX Heat” mode is usually an indicator that it’s freezing outside, and your is heat pump is using a secondary backup heat source – your auxiliary heat—to keep your home at your set temperature.Click to see full answer….
Turning your thermostat to “heat” came with an unexpected “AUX” function appearing. What does it mean? The “AUX Heat” mode is usually an indicator that it’s freezing outside, and your is heat pump is using a secondary backup heat source – your auxiliary heat—to keep your home at your set temperature.Click to see full answer. Consequently, what does AUX mean on thermostat? auxiliary heat Additionally, is it normal for AUX heat to come on? 1. The temperature outside is below 35°. Usually, once outdoor temperatures fall below 35°, a heat pump will struggle to keep your home warm and will automatically switch to AUX heat. If it’s an unusually cold Arizona day, it’s normal to see AUX heat on your thermostat. Regarding this, is auxiliary heat more expensive? Auxiliary heat can handle more extreme temperatures since it uses electric heat strips. What this means, unfortunately, is that it’s more expensive than the conventional heat provided by a heat pump. While a gas furnace is not as efficient as a heat pump, it is more efficient than a heat pump using auxiliary heat.At what temperature should auxiliary heat come on?Auxiliary Heat. Auixiliary Heat will turn on automatically when heat can no longer efficiently transfer heat from the outside air to heat pump. This is when the outside is around 35-40 degrees and the indoor temperature is around three degrees cooler than the thermostat setting.
