woman wondering why her air conditioner freezes in the summer

Why Does Your Air Conditioner Freeze in Summer?

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

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

When we say the air conditioner is frozen, what’s actually frozen is the evaporator coil, which transfers heat out of your home to keep it cool. There are two main reasons that an evaporator coil may freeze; one is a refrigerant leak and the other is a blockage of airflow.

If your air conditioner has a refrigerant leak, you will want to discuss with your Dial One Mears Air Conditioning & Heating 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 facts such as the age of your air conditioner and its service history, as well as other things.

If your air conditioner has frozen due to 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 frequently 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 running as it should with no potential challenges 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 frequently and change your air filters when they are dirty. Always be sure that furniture, curtains and other household items aren’t blocking your registers, as even this could cause a serious airflow problem and the subsequent freezing problems.

If your air conditioner freezes, turn it off using your thermostat and call the team at Dial One Mears Air Conditioning & Heating Inc 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 602-997-5701 or book an appointment with us online.