Helpful tips

Why Does My Honeywell thermostat say aux heat on?

Why Does My Honeywell thermostat say aux heat on?

Turning your thermostat to “heat” came with an unexpected “AUX” function appearing. 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.

Why is my AUX heat always on?

The AUX heat setting on an HVAC unit usually turns on when you need heat fast. If this secondary heating system is constantly running, it may mean that the weather outside is very cold or that the thermostat is set higher than normal. It’s also possible that a part of the heat pump is malfunctioning.

How do I fix the auxiliary heat on my Honeywell thermostat?

One of the simplest things you can do to keep your Honeywell thermostat from switching to auxiliary heat is to lower the temperature in your home. Setting the thermostat for somewhere between sixty to sixty-eight degrees is all you should need to do to get the problem under control.

Should auxiliary heat come on?

Auxiliary heat refers to your heat pump’s backup electric resistance heating. Aux heat should only kick on when the heat pump can’t produce enough heat to warm your home on its own.

At what temperature should auxiliary heat come on?

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.

Why is my AUX heat not working?

Another unlikely, but possible, cause of “no heat” on a heat pump system is a failure of the heat pump itself. The reason that this is an unlikely cause is the fact that the auxiliary heaters should energize to keep the space warm even if the heat pump stops working.

Is there a difference between auxiliary heat and emergency heat?

Auxiliary heating turns on automatically to help heat your home more quickly if the temperature drops suddenly. The emergency heat setting has to be manually switched on and should only be used in temperatures below 30 degrees.

Is auxiliary heat the same as emergency heat?

Why is my auxiliary heat blowing cold air?

Heat Pumps They also use auxiliary heat strips if the outside temperature is extremely cold. If these strips malfunction, the heat pump will blow cold air. If the level is low, the heat pump cannot transfer heat efficiently. A professional should check the heat strips and refrigerant level.

How do I know if my auxiliary heat is working?

A quick and dirty way I can tell is that the air coming out of the vents is noticeably hotter when the aux heat is on. Feels as hot as my old propane forced air system used to. My thermostat, Honeywell Visionpro IAQ, also has the word “aux” show up on the display.

What temperature should auxiliary heat come on?

At what temperature does a heat pump switch to emergency heat?

35°F
Emergency Heat, also known as “auxiliary heat”, is the second stage of heat that your thermostat runs on when the temperature is too cold for your heat pump to extract heat from the outside. Emergency Heat is typically triggered when it is 35°F and below outside.