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.

Why is my auxiliary heat always on?

Why Is My Heat Pump Auxiliary Heat Always On? Typically, your heat pump will tag in auxiliary heat when outdoor temps drop below 35°F, your heat pump is set to the defrost setting, or you’re attempting to heat your home by 3°F or more at a time. … If it is, turn off this setting and check if this disables the aux heat.

Is it bad if auxiliary heat comes on?

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.

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.

Why is my thermostat showing auxiliary 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.

Why does my heat pump not shut off?

Turn Off the Heat at the Thermostat If your heat pump won’t turn off, switch the thermostat setting to “Heat Off.” If your thermostat doesn’t have a switch, try setting the thermostat above the current room temperature. This should turn the heat pump off temporarily.

How often should AUX heat come on?

When should my auxiliary heat come on? When outside temperatures drop below 40 degrees. While undergoing the defrost cycle. When there is a 3 degree difference or more in the current temperature in your home and the thermostat setting.

How much more expensive is auxiliary heat?

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.

How do you reset your heat pump?

1. 1 – Turn off the Thermostat.
2. 2 – Turn off the Power Switch to the heat pump (located on either the.
3. 3 – Turn off the 2 electrical breakers for the heat pump.
4. 4 – Wait a few minutes (3 to 5 minutes should be long enough)

What is the 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.

Article first time published on

How often should a heat pump cycle on and off?

It completely depends on the unit’s cooling capacity, the room temperature and the humidity. On the average, a 10 to 20 minutes shut down should be appropriate enough depending on the factors mentioned. And it should be within 2 to 3 cycles per hour max.

How long should a heat pump run?

Typically, a heat pump should cycle two to three times an hour. The heat pump should stay on for 10 to 20 minutes during the cycle. However, during cold outside temperatures (below 30-40 degrees), a heat pump will constantly run to maintain the home temperature.

Should heat pump and AUX heat run simultaneously?

Allow Heat Pump/Auxiliary Heat to Run Simultaneously: If you select Yes and there is a source of auxiliary heat, both auxiliary heat and heat pump will turn on. … This option should also be used for installation where the heat pump evaporator coil is downstream from the source of auxiliary heat.

Do heat pumps have a reset button?

Makes sense that the unit is off or you wouldn’t be looking for a reset button. … So if your unit is off and not responding to your thermostat settings, your heat pump or air conditioner will most likely not have a reset button unless it’s a Rheem or Ruud unit and their are a few others that come with reset buttons.

How long does it take for a heat pump to reset?

Reset the system by turning it off with the thermostat or breaker if your unit has a safety device locking it out. Wait 60 seconds and turn it back on. It may take up to 10 minutes for the outdoor unit to start.

Does a heat pump have a reset?

How Much Time Does it Take for a Heat Pump to Reset? You can reset the unit by turning it off with the thermostat or circuit breaker. After some time, turn it on again. It can take up to 15 minutes for the outdoor system to restart.

Does auxiliary heat come on automatically?

Auixiliary Heat will turn on automatically when heat can no longer efficiently transfer heat from the outside air to heat pump. … Auxiliary heat uses electric resistance heating, which is much less efficient than your heat pump. Therefore, a heating system stuck in AUX heat will run up an energy bill.

What is Stage 2 auxiliary heat?

First-stage auxiliary heating for heat pumps and multi-stage furnaces; provides supplemental gas or electric heat when the heat pump cannot meet demand. Stage 2 Aux Heating. Second-stage auxiliary heating for heat pumps and multi-stage furnaces.

When should I put my heat pump on emergency heat?

Short answer: You should only set your heat pump’s thermostat to “emergency heat” when your heat pump stops heating altogether. And in that case, you should also call a professional for help.

How do I know if my heat pump is working properly?

The main way to tell if your system is working as intended is to simply listen to the unit running. You can hear the system when it turns on, when the fans begin to work and stop, and when air passes through the ducts. Other than that, the unit itself should be quiet, without any groaning or creaking sounds.

How many times per hour should a heat pump run?

Most systems should run about 2-3 cycles per hour.

How do you fix a short cycling heat pump?

In these cases, short cycling is your unit’s way of protecting itself from overheating. Cleaning your unit, ductwork and air vents, as well as replacing/cleaning air filters can solve this issue.

Can I run my heat pump in the winter?

A heat pump is both a cold weather and warm weather indoor comfort system. During cool temperatures, a heat pump draws ambient warmth from the outside air using refrigerant and then moves it indoors. … However, a heat pump’s outdoor unit is supposed to operate during cold weather.

How long is too long for auxiliary heat?

If your aux heat is engaged and then the call for heat is immediately cancelled, the aux heat will continue running for this set value (5 minutes) before turning off. This setting prevents your aux heat from short cycling, so we recommend leaving this at 300 seconds to prevent any potential damage to your equipment.

What is aux reverse staging?

If this option is enabled, the thermostat will cycle down from the higher stages so that as it approaches set point it will only be running in stage 1. The HVAC equipment will start in stage 1. As the stage 1 temperature delta is exceeded, the second stage will engage.

How do you reset a Emerson thermostat?

Press and hold the up or down arrow and the time button at the same time. Hold the buttons down for 10 seconds. The display will go blank and reappear after a few seconds. The thermostat is now reset.

How do you turn off the schedule on a Emerson thermostat?

Use▲and ▼buttons to navigate to Settings. Press Menu to Enter. Use Next and Back to navigate to the screen that has “06” displayed in the top right corner. Use ▲and ▼buttons to select between 1 to 12, or set it to OFF to turn off reminder.