Gary's is blessed and grateful to have served the Amarillo area for 40 years!

Why is my AC unit freezing up?

This is a common question asked at Gary’s Heating and Air during the summertime. Air conditioners need proper airflow to keep the cold coil warm and without this, the coil will freeze before the condensed water can be drained away from the unit.

Many people that call think they just need to add refrigerant but there are many reasons why this could be happening.

1. Faulty thermostats

2. Drainage problems

3. Dirty filters

4. Dirty coil

5. Collapsed ductwork

6. Improper sized ductwork

7. Bad blower motor

8. Closed supply vents

9. Return grills covered by drapes, curtains or furniture

10. Refrigerant leak

Here’s something very important to remember: Running an air conditioner with frozen coils can lead to extensive damage of the compressor. This is the most expensive part of an AC unit, and it’s not a repair or replacement that you want to face.

  • Don’t settle for someone just coming out and adding refrigerant without providing a full system evaluation of your system.
  • Refrigerant is very expensive and may not be the cause. Adding more refrigerant when it isn’t needed just adds to your problems.
  • Call a certified heating and air conditioner technician to provide a Full System Evaluation so you will know exactly what is causing this.
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