When the weather outside gets colder than your lockout temperature, your thermostat will start using AUX heat. If you have a heat pump with AUX heat, your Nest thermostat will use Heat Pump Balance to determine your lockout temperature automatically.
Similarly, it is asked, what is auxiliary heat on nest?
Using Auxiliary Heat with a Nest Thermostat. If you have a central HVAC (heating / ventilation / air conditioning) system called a "heat pump", and live in an area where the temperature in the winter goes below about 50°F (or 10°C) then you probably have something called "emergency heat" or "auxiliary heat".
Secondly, 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.
Similarly, what does AUX heat mean on thermostat?
Aux on the thermostat stands for auxiliary heat. Auxiliary heat is the electric heat strip in your air handler that is supplemental heat. Auxiliary heat/ Emergency heat help the heat pump keep up when cold outside or the temperature differential on the thermostat is large.
Is it normal for 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 do I stop my auxiliary heat from coming on?
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.How do I know if my nest has auxiliary heat?
check your thermostat's wiring in the steps below:- Pull off your thermostat's display.
- If you don't have a wire in the W2/AUX connector, you don't have AUX heat.
- If you have wires in both the W1 and W2 connectors of your Nest thermostat, your system is a dual fuel system, and won't use Heat Pump Balance.
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.Why is my nest blowing cold air instead of heat?
The nest seems to blow warm air normally but once it switches to alternative heat source, then it starts blowing cold air. Alt heat means the heat pump is turned off and the other source (usually gas furnace) is asked to heat. May be something as simple as a switch or breaker is turned off.Why is my heat blowing cold air?
Your furnace may be blowing cold air because the filter is too dirty. A dirty air filter blocks airflow over the furnace's heat exchanger, causing it to overheat. When overheating, your furnace can trip a high limit switch, causing the furnace burners to shut off so that the heat exchanger does not crack.How does AUX heat work?
Auxiliary heat is a heating system that works when the temperature inside a home or building drops lower than two or three degrees from what the temperature is set. Or when someone decides they are cold, and turns the thermostat up more than three degrees. Auxiliary heat is a component of heat pump systems.Why is my heat pump blowing cold air?
You see, a heat pump heats your home by moving heat from the outdoor air into your home. But as it gets colder, and your heat pump can't pull as much heat in from the outdoor air, the air coming from your vents drops slightly in temperature. If so, your heat pump is blowing warm air that just feels cold to you.How do I reset my thermostat?
Here are the steps you need to take to reset your AC thermostat.- Shut Down Your AC at the Thermostat. The first step in resetting your AC thermostat is to turn it off at the AC unit.
- Find Your Circuit Breaker Box.
- Reset the Circuit Breaker for Your AC Unit.
- Wait 30 Seconds.
- Turn the AC Thermostat Back On.
