Why Does Your Air Conditioner Freeze in Summer?

July 20, 2017

The summer can get so hot in Kearney, 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 crazy 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 be in need of air conditioning service:

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

When we say your home’s air conditioner is frozen, what’s actually frozen is the evaporator coil, which transports heat out of your home to sustain the cool temps. There are two main reasons 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 discuss with your Thurston Heating & Air Conditioning 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 assess the pros and cons using facts such as the age of your air conditioner and its service history, among other things.

If your air conditioner has frozen due to an airflow blockage, it’s because there isn’t sufficient 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 remedied (and avoided!) by a routine air conditioner service appointment. At these service sessions, your technician will clean your system, replace your air filters and make sure everything is working as it should with no potential issues on the horizon. It’s also a great idea to mark your calendar or set a reminder on your phone to check your air filters frequently and change them when they are dirty. Always make sure 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 team at Thurston Heating & Air Conditioning to schedule an air conditioning service appointment. We’ll help you identify the problem and have your home back to cool and comfortable quickly. Call us at 308-624-3485 to book an appointment with us.