What does AUX mean on my heater?
“Aux” is short for auxiliary heat. If a heat pump is having a difficult time coming up to a certain temperature quickly due to extremely cold outdoor temperatures, the “aux heat” indicator means that a secondary heat source (generally gas or electric) has been deployed.
Is it bad to run AUX heat?
Is AUX heat bad? The short answer is no. In fact, aux heat is a critical mechanism that keeps your heat pump properly running when the outdoor temperature drops. Since this type of unit doesn’t work the same as a furnace, it can get cold.
Does AUX heat cost more?
As we mentioned above, AUX heat usually costs up to 50% more than heat transfer, which means if your system is running on AUX heat when it shouldn’t be, your heating bill is likely going to be a lot higher than you’d like it to be.
When should AUX heat be used?
When the temperature inside your home drops about two or three degrees below the temperature the thermostat is set to, auxiliary heating kicks on to help warm your home more quickly.
What causes AUX heat to come on?
Aux heat should only kick on when the heat pump can’t produce enough heat to warm your home on its own. This is typically caused by one of three factors: when it’s below 35° outside, you’re trying to heat your home by 3° or more, or your heat pump is in defrost mode.
How long can you run auxiliary heat?
Aux Heat Minimum On Time By default, this time is set to five minutes. This means, if your aux heat is called upon and canceled immediately, it will still run for five minutes before shutting down. If you change the threshold settings, you can configure the minimum on time and save on electricity or heating oil.
Why is my heat pump blowing cold air?
Defrost mode basically means your heat pump temporarily switches to cooling mode. This forces the outdoor coils to heat up, melting any frost or ice that has built up. And because the heat pump switched to cooling mode, it will blow cold air into your home for a few minutes.
Why does thermostat say aux heat?
When you see the “aux” heat indicator on your thermostat it means your heat pump needed some help reaching the desired temperature. It turns on automatically when the temperature falls about two degrees below the desired setting and turns off automatically when the target temperature is reached.
How long can you run emergency heat on a heat pump?
Em heat vs. aux heat
| Normal heat pump at 30 degrees for 1 week | Emergency heat at 10 degrees for 1 week | |
|---|---|---|
| Hours use per day | 12 hours | 24 hours + 12 hours |
| Number of days | 7 days | 7 days |
| Total kWH | 252 kWH | 252 kWH + 1260 kWH |
| Cost per kWH | $0.13 | $0.13 |
How do I stop my heat pump from blowing out cold air?
What to do if your heat pump is blowing cold air
- Turn off the heat at the thermostat and check your air filter. If it’s dirty, change it!
- Make sure the thermostat is set to “AUTO”, not “ON”. When set to “ON” the fan will stay on even when your heat pump isn’t actually heating.
What does aux heat mean on my thermostat?
So let’s recap : Aux on the thermostat stands for auxiliary heat. Auxiliary heat is the electric heat strip in your air handler that is supplemental heat. Emergency heat is the same thing as auxiliary heat. Auxiliary heat/ Emergency heat help the heat pump keep up when cold outside or the temperature differential on the thermostat is large.
How to stop auxiliary heat from coming on?
Lower The Set Heat Temperature. More often than not, the aux heat is coming on because the temperature in the home is…
Is auxiliary heat bad?
Is AUX heat bad? The short answer is no. In fact, aux heat is a critical mechanism that keeps your heat pump properly running when the outdoor temperature drops. Since this type of unit doesn’t work the same as a furnace, it can get cold.
What is an auxiliary heater?
Auxiliary heater. Vehicles are generally heated by waste heat from the internal combustion engine. Auxiliary heaters provide supplementary heating for the passenger compartment of cars without having to rely on the heat given off by the engine.
