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 & Surrounding Areas Since 1995

My Air Conditioner is Frozen! What Should I Do?

Phoenix is known for its, sometimes unbearable, heat. That can make the discovery that your air conditioner is frozen solid an even more baffling experience. Even in the dead heat of summer, right when you need your air conditioner the most, it’s not uncommon for it to be caked in ice and unable to function.  While this isn’t unusual, it is a sign that something is very wrong.  How is this possible you might ask? Well, here are some of the common problems that can lead to a frozen air conditioner:

Low Refrigerant

Contrary to what common sense would tell you, having low levels of refrigerant can lead to a frozen air conditioner.  This is due to the low levels of refrigerant causing the pressure to drop inside the air conditioner’s evaporator coil, which leads to a buildup in moisture. When your air conditioner cools the air the moisture will freeze and accumulate on the coil.

Insufficient Air Flow

If there is an issue that is restricting air flow, the evaporator coil in your air conditioner can drop to temperatures below freezing, preventing it from reducing moisture in the air and causing it to build up and freeze.  Dirty air filters, a damaged blower motor, or collapsed, obstructed or undersized ducts common causes of insufficient air-flow.

Outdoor Temperatures

If you allow your air conditioner to run at night, and temperatures drop drastically, it could be the cause of your problem.  A good rule of thumb is to not run your air conditioner if temperatures drop below 60 degrees Fahrenheit.

What to Do Now?

Air conditioner freeze-ups should not be ignored.  If not addressed immediately, it could cause permanent damage to your system, and even require a replacement.  The first thing you should do if you notice your air conditioner is frozen is to turn it off immediately and allow it to defrost. If the problem persists, it may require professional service.

If you have more questions about your air conditioner, or to schedule service from one of our certified technicians, contact A Quality HVAC Services, LLC today!