Your HVAC fan should turn on and off with the rest of your heating and cooling system. It’s normal for the fan to kick on a couple of minutes before heating starts or to stay on for a couple of minutes after cooling stops, but your fan shouldn’t run for hours on its own.

Does a heat pump fan run all the time?

Extremely Cold Temperatures

If your system does not correctly switch between heat pump and backup heating, it appears that the heat pump fan keeps running because the system runs longer to keep up.

How often should a heat pump fan 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.

How long should fan run after AC turns off?

About 60 seconds in heat mode should do it. Residual heat will rise up anyway, if the unit is in the basement. Running the blower at full speed after the compressor stops, can raise your indoor humidity levels. 30 seconds is probably OK, but after than, you’ll start ot reevaporate water.

Why does the fan on my heat pump keep running?

Blower Relay Switch has Malfunctioned

The controller for the blower fan may be malfunctioning resulting in communication from the thermostat not getting through. This would mean the fan would continue to run even though the heat pump has switched off. Action: Try to turn off the fan at the thermostat.

Should heat pump fan be on auto or on?

Keeping your fan on AUTO is the most energy-efficient option. The fan only runs when the system is on and not continuously. There is better dehumidification in your home during the summer months. When your fan is set to AUTO, moisture from cold cooling coils can drip and be drained outside.

Why is my heat pump not turning 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.

Should the fan be spinning when the heat is on?

The fan on your unit should spin when you want air in your house and shouldn’t spin when the temperature of your house matches the thermostat setting. Heat pumps take in hot air from the outside and cool it before blowing it into your home.