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Problem: Is it Normal for my heat pump to have frost on the outside?

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Problem: Is it normal for my heat pump to have frost on the outside in the winter time?

Answer: Yes, it is normal to have some frost on the outside of your heat pump unit occasionally. It is not normal for frost or ice to continuously stay on the heat pump. If your unit does not defrost properly you can get a continuous build up of ice and frost on your heat pump. If you are getting a continuous build up of ice this can be caused by a low refrigerant charge or a faulty defrost control or defrost thermostat. Please click here if you would like to see the heat pump defrost controls that we sell. I would suggest that you call a service tech to come out and troubleshoot your system if ice continues to form on the outside of your unit and does not go away. This ice build up lowers the efficiency of your unit drastically and if left long enough can damage the compressor, fan blade and motor. We tell our customers to turn off their heat pump units and go to straight auxillary heat if the outdoor temperature is going to be below 20 degrees Farenheit  for more than 2 to 3 days. The heat pump can not extract much heat out of the air when it gets below 20 degree outside so you get a continuous run cycle and this continuous run cycle is not good for the heat pump or your electric bill. Below we have a real good informative video below which explains heat pump freezing and defrosting, made by ThomassonEnterprses. Thanks to ThomassonEnterprses for making this informative video! If you have any questions please email us anytime. Our email address is: We would love to help you out and have your business!

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