Three Reasons Why Your Air Conditioner Can Freeze Up

By | August 2, 2019

Three Reasons Why Your Air Conditioner Can Freeze Up

All air conditioners can freeze up when not operating correctly.

This includes most any unit from a big home unit to a small window mounted unit.

Here we give the three most common reasons a unit can ice over and stop working.
Reasons Why Your Air Conditioner Can Freeze Up

  1. Bad Air Flow
  2. All A/C units need to cycle air or they will not work correctly.

    This means pulling air into a unit usually through what is called a Return Air and then blowing the air back into a home usually through vents.

    If air becomes blocked at the return air such as a dirty filter, air will stop blowing making a unit not operate as it is designed to do.

    Replacing a dirty air filter is a simple DIY job that needs to be done every so often to keep a unit operating correctly.

    Blocked vents especially floor vents also can happen and should be cleared so air can blow into a space.

  3. Setting Thermostat Too Low
  4. Most system can run and cool down to about 15-20 degrees Celsius, 60-67 degrees Fahrenheit.

    Setting a unit colder than it is supposed to be set can make it ice over much like a refrigerator freezer.

    Since an air conditioner is not meant to freeze but cool air if set too low they can sometimes freeze up.

    Setting a unit to a very low temperature will not cool a space up quicker, and depending on other variables such as outside temperature can at times freeze a unit up.

  5. Low on Refrigerant
  6. A unit that is low on Refrigerant can also freeze up.

While adding more Refrigerant is needed most often a leak is in the unit somewhere that will need to be found and sealed.

Finding a leak, sealing it, and adding refrigerant into a unit is best left to professionals.

There is electronic leak detectors that can sniff out a leak, or in some cases soap can be used on a suspected leak to find a bad spot.

All units have a set amount of Refrigerant that can go into a unit before it does not wok correctly which a professional should be called to do.

Refrigerant is sold by the pound and is filled into a unit by the pound ounces also.



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