Heat Pump Cooling In Heating Mode

Why is My Heat Pump Producing Cool Air in Heating Mode?

October 11, 2022

Heat pumps heat your home in the winter and cool it in the summer. They do this by moving air from one place to another. The following are reasons your heat pump in Big Stone Gap, VA, produces cool air while in heat mode:

Defective Reversing Valve

The reversing valve is a four-way valve that allows the heat pump to reverse the refrigerant flow. This helps the heat pump change from cooling to heating mode and vice versa. If the reversing valve is defective, it might get stuck in the cooling position, which would cause your heat pump to produce cool air while in heating mode.

Heat Pump in Defrost Mode

During the winter, the coils on the heat pump can ice over. To prevent this, the heat pump will go into defrost mode. When in defrost mode, the heat pump will produce cool air for a short period to melt any ice built up on the coils.

Low Refrigerant Level

If the refrigerant level in the heat pump is low, it won’t be able to generate enough heat to warm your home. This can cause the heat pump to produce cool air while in heating mode. Ensure that the refrigerant level is where it should be to avoid this problem.

Thermostat Set Too Low

Thermostat settings that are too low can cause the heat pump to produce cool air while in heating mode. This is because the heat pump will run for a longer period trying to reach the set temperature.

When this happens, the coils can become too cold, which will cause the refrigerant to turn into a gas instead of a liquid. This will prevent the heat pump from generating heat, causing it to produce cool air.

When your heat pump is in heating mode, you should feel warm air from the vents. If you’re feeling cool air, contact Mid Mountain Heating & Cooling for heating repair services. Our experts will help you find the root of the problem and provide cost-effective solutions.

Image provided by iStock

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