Why Does Your Air Conditioner Freeze in Summer?

July 20, 2017

The summer can get very hot in Saint Petersburg, so how in the world is your air conditioner freezing over? It seems to make no sense. You may not even realize it’s taking place. How will you notice if your air conditioner is frozen? It may seem like a silly question, but you typically won’t actually see the ice except in extreme cases. Here are symptoms to monitor for that indicate you could be dealing with a frozen AC system that could require air conditioning service:

  • Warm air is coming out of your registers while the air conditioner is running.
  • Water is leaking from or pooling under your air conditioner.

When we say your air conditioner is frozen, what’s actually frozen is the evaporator coil, which transports heat out of your home to maintain the cooler temperatures. There are two main explanations that an evaporator coil may freeze; one is a refrigerant leak and the second is a blockage of airflow.

If your air conditioner has a refrigerant leak, you will want to speak with your Hale's Air Conditioning Services Inc technician during your air conditioning service appointment to see if you will benefit more from repairing or replacing your air conditioner. We can help you weigh the pros and cons using background such as the age of your air conditioner and its service history, among other things.

If your air conditioner has frozen as a result of an airflow blockage, it’s because there is not enough air passing over the evaporator coil to dry the condensation that acquires on it—then it freezes. Air flow blockages are commonly caused by dirty air filters or even dirty cooling fins. These problems can be fixed (and avoided!) by a routine air conditioner service appointment. At these service sessions, your technician will clean your system, replace your air filters and confirm everything is running as it should with no potential problems on the horizon. It’s also a valuable idea to mark your calendar or set a reminder on your phone to check your air filters often and change your air filters when they are dirty. Always check that furniture, curtains and other household items aren’t blocking your registers, as even this could cause a large airflow problem and the following freezing problems.

If your air conditioner freezes, turn it off using your thermostat and call the pros at Hale's Air Conditioning Services Inc to schedule an air conditioning service appointment. We’ll help you identify the issue and have your home back to cool and comfortable in no time. Call us at 727-369-6195 to schedule an appointment with us.