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Speedy Air Conditioning Service Blog

Is Your Heat Pump Not Heating? Find Out Why

Heat pumps are prized for their ability to switch between heating and cooling modes. This is what makes them so energy efficient, and is the primary reason why so many homeowners install them in the first place. However, this ability is not perfect. There may be times when your heat pump gets stuck in one mode or another, which can be quite inconvenient when you need them to be in the opposite mode. If you’re trying to keep warm this winter, but your heat pump isn’t heating, read on to find out why.

The Reversing Valve

Heat pumps don’t burn fuel to generate heat. Instead, they evaporate and condense refrigerant to move preexisting heat between the home and the outside air. Depending on the direction that refrigerant flows through the system, the coils in the two separate units that make up the heat pump switch functions. In heating mode, the outside unit evaporates refrigerant to absorb heat and the inside unit condenses refrigerant to release heat. The opposite is true when the system is in heating mode.

The part that allows the heat pump to control the flow of refrigerant is called the reversing valve. This valve sits in the refrigerant line, and uses a slide to dictate which direction the refrigerant flows through the system. The slide in the reversing valve is controlled by an electromagnet called the solenoid. Now, if the slide becomes stuck in the valve, or the solenoid loses its charge, the system will not be able to change the flow of refrigerant. At that point, the heat pump will be unable to switch modes. If your heat pump seems to be stuck in air conditioning mode, this may well be why.

If your heat pump is not heating properly, call Speedy Air Conditioning Service. We cover all of Palm City, FL.

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