Reasons Why Your AC Unit Can Freeze Up Outside

AC Unit Freezing Up Outside
Although bizarre, it it still a regular sight, to have your ac unit freezing up outside, while the sun is beating down in the middle of summer, and everyone around you is dressed in shorts.

AC Unit Freezing Up OutsideIn the summer months, how is it possible for your air conditioner to resemble an igloo? It is certainly not normal, and actually a cause for concern, if you have ice forming on your unit. This is a situation that can occur as a result of several common problems:

  • Insufficient Air Flow: The evaporator coil of your system can fall below freezing level, if there is anything restricting the free flow of air. Ice will develop on the coil if there is humidity in the air, and the cooling capacity of the system will be reduced. Some factors that can prevent or impede the air flow include damaged blower motors, dirty air filters, the build-up of dirt on the evaporator coil, as well as undersized, obstructed and collapsed ducts.
  • Problems with the Refrigeration of The System: Leaks or low levels of refrigerant can result in the pressure falling in the coil of the unit, and moisture in the air freezing and collecting on the coil.
  • Outdoor Temperature: Most outdoor units do not operate well when the temperatures are less than 60 degrees Fahrenheit. If the temperatures at night fall too low, freeze-ups can occur and prevent the proper functioning of the system.

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