Sorry, the web browser you're using is not supported by this website.

Please use Google Chrome, Firefox, Safari, or another browser to access Thank you.

Skip to main content

We use cookies to enhance your experience. For details on how we use cookies, collect data, & how to manage your consent please see our Cookie Policy & Privacy Policy.

Identifying a Frozen Heat Pump Outdoor Unit

The outdoor unit of your heat pump is vulnerable to wear and tear, especially because it sits outside. As a result, in the wintertime, your system's defrost termination switch or control board can fail and your unit will freeze. Your unit cannot function properly if it is frozen, and you'll need to have it inspected and repaired.

Why Do Heat Pump Units Freeze?

To work, a heat pump system generates heat and leaves behind condensation. In the wintertime, this condensation freezes in the cold air. If any of the following issues are at play, the system will be unable to handle the freeze, and the ice buidup will become a real problem: a worn, damaged, failed defrost termination switch or defrost control board.

How to check for a frozen outdoor unit

  • You'll know if your heat pump is frozen by examining the outdoor unit for ice. A little bit of frost and ice on the outdoor coils is normal. A blanked of ice covering the unit is not.

  • It may sound silly, but make sure there's no water overflowing from gutters and pouring onto the outside unit. The source of water may not be coming from the heat pump itself, which would point to a different issue.

Other issues

If a frozen heat pump doesn't seem to be the problem, consider other reasons why your home can't keep up with the temperature on the thermostat.

What To Do If Your Heat Pump Outdoor Unit is Frozen?

Depending on the severity of the freeze, a technician will clear out the ice and inspect suspect parts of the unit, including air filters, fan fins, and thermostat setting to ensure they are all normal.

NOTE: This content is for informational purposes only, and HomeX and its affiliates disclaim all liability related to it. If you decide to perform any tasks based on this information, you assume all risks, including the risk of loss or damage to property or personal injury.

Let's Get It Fixed!

Our virtual experts can diagnose your issue (for free!) and resolve simple problems.

What Did You Think of This Article?

What Did You Think of This Article?