Covered air conditioner

Should I Cover My Air Conditioner During Winter?

It seems like a simple question, do you cover your central air conditioner in the winter months or not. The answer is in the detail but generally, your central air conditioning unit consists of a compressor and condensing unit placed outdoors in a metal housing. These units, built to resist the weather, generally do not need a cover.


Just In Time Furnace Inc.’s highly-qualified and licensed air conditioning technicians are constantly trained on the latest industry trends and technology, and have the skills necessary to inspect, diagnose, and service even the most modern and complicated systems. As a general rule, it’s a good idea to have your system professionally inspected, cleaned, and serviced once a year in order to ensure it operates at peak energy efficiency, and is ready to cool your house during the hottest months of the year.


Based on our experience, and HVAC professionals all over North America, covers can actually cause the problems they are designed to prevent, because they trap moisture and create an inviting winter home for small animals. All of the parts and materials used are designed to stand up to hot summers and harsh winters with no major manufacturer specifically recommending that you cover your air conditioner in the winter – otherwise they’d probably provide you with a cover as part of your purchase.


Here are several reasons why it is not necessary to cover your air conditioner in the winter, and how to cover your air conditioner if needed:

  • Rodents and other animals seeking shelter from harsh winters will inhabit a covered air conditioner, leading to secondary problems like chewed electrical wires and un-insulated Freon lines due to the rodents stripping them to make a nest. 
  • Mold can accumulate in the spring months before the air conditioner is uncovered due to the increased moisture inside, it can block proper airflow through your coils and decrease your air conditioner’s efficiency.
  • Probably the biggest argument that can be made for why you should not cover your air conditioner in the winter has to do with water. If water accumulates on your air conditioners external coils (called condenser coils) and then freezes, it runs the possibility of damaging your coils over time. If this happens, it is best to look at ways of repositioning the unit or directing water drainage away from the unit, to prevent damage from the water freezing in the unit which can damage your coils.


If you have questions about energy efficient air conditioning, or to check out our specials on furnace and duct cleaning in Calgary, or any of our services for your home or business needs, call Just in Time Furnace Inc at 403-333-6666 today for a free quote and great values.

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