In this kind of scenario, the auxiliary heat is working as some extra muscle because heat pumps aren’t built to handle that kind of workload. When the temperature drops down to around freezing temperatures, your AUX heat might be necessary to help the heat pump keep the cold out of your home. The Weather Reaches Freezing Temperatures At this point, the AUX heat will kick on to help your home warm up. Suddenly, your system recognizes that the set temperature is significantly higher than the actual temperature in the home.
It will engage to help get your home up to the desired temperature as quickly as possible.įor example, if you like to keep your home cool at night so you can sleep under a big blanket, you might need to turn the temperature up by several degrees first thing in the morning. If you increase the set temperature in your home by more than a few degrees, your heat pump might have a hard time catching up. There are a few reasons this might happen. Why Is the Auxiliary Heat Coming On?Īs you might imagine, the AUX heat typically engages when your home needs to get warmer in a hurry. It creates electrical heat that works with your normal heat pump to increase the temperature more quickly. This is an ideal way to heat homes in hot climates because it’s extremely efficient. Normally heat pumps use a reverse cycle to keep your home at the ideal temperature. Your heat pump’s auxiliary heat helps heat up your home quickly, and it’s something like a last line of defense against the cold.
That said, it can come in handy every once in a while when temperatures dip here in Arizona. What Is Auxiliary Heat?ĪUX heat, as a feature, is most useful for homes in cooler climates than the one we have here in Phoenix. If your auxiliary heat is constantly running, or if you think it’s running when it shouldn’t, here’s everything you need to know to get to the bottom of the issue. Here in Arizona, that shouldn’t be especially often.
The heat pump AUX heat (short for auxiliary heat) is there to give your home a quick burst of heat when you need it. Why Does My Heat Pump’s AUX Heat Keep Turnin On?
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