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ServiceMax Blog

Why Is My Heat Pump Still Blowing Cool Air?

It’s officially heating season and time to switch your heat pump from cooling to heating mode. Heat pumps don’t blow blasts of hot air out like forced air systems do, so the air coming through your vents or ductless blower can feel cooler than some traditional heating systems. However, if you feel air that is definitely cool/cold, there may be an issue with your heat pump in Wilmette. Heat pump systems are complicated, so if you experience any type of problem with your system, call Malek Heating & Cooling and schedule an appointment with one of our heating experts.

Reasons Your Heat Pump Can Blow Cold Air

Here are some of the more common reasons your heat pump may be blowing cold air:


With a heat pump system, you have a dual-mode thermostat, so the first thing to check is the mode: was it switched from heating to cooling? If the setting is correct, there may be an issue with the thermostat itself. Dust and dirt covering the inside instrumentation can create problems with operation, and faulty wiring can affect the communication between your thermostat and heat pump.

Problems with Reversing Valve

The reversing valve is the component that allows your heat pump to provide both heating and cooling. It does this by changing the direction in which the refrigerant flows. The reversing valve can sometimes get stuck in a particular mode or stuck between modes, disabling the system from changing from cooling to heating or vice versa. Some problems with reversing valves can be repaired, but other times replacement of the valve is required.

Refrigerant Leak

Your system requires a specific amount of refrigerant to operate correctly. Should a leak develop, the refrigerant cycle won’t work properly, reducing the amount of heat that is released from the evaporator coil and blown into your home. Refrigerant leaks typically become worse with time, and can lead to other problems such as icing. If you suspect a refrigerant leak, make an appointment with your technician.

No one likes to have cold air blowing from their heat pump system in Wilmette, so if you experience this problem, call the people you can count on to repair it: Malek Heating & Cooling.

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