5 Reasons Why Your Air Conditioner is Freezing Up and How to Fix It

Have you ever experienced the unpleasant surprise of your air conditioner freezing up? It’s not only uncomfortable but it can also be a sign that something is wrong with your AC. Here are the 5 most common causes of AC freeze-up listed by our air conditioning Woonona experts to help you understand and guide you on what can do about it.

1. Low Refrigerant Levels

Low Refrigerant Levels

If the refrigerant levels in your system are too low, it can cause the evaporator coil to become too cold and cause the unit to freeze up. The best solution for this is to have a professional come out and check the refrigerant levels in your system and add more if necessary.

2. Clogged or Dirty Air Filters

Clogged or Dirty Air Filters

When your air filters become clogged with dust and debris, it prevents the proper flow of air into your system. This lack of airflow can cause cold spots in the evaporator coil that can lead to freezing up. To fix this issue, you should change out your filters regularly (about once a month).

3. Leaking Ducts

Leaking Ducts

If there are any cracks or holes in the ducts leading to your AC unit, it can cause air leakage which causes low pressure and cold spots on the evaporator coils. The best way to solve this problem is by having a professional come out and use special equipment to identify any leaks in the ducts and repair them as needed.

4. Improper System Sizing

Improper System Sizing

When an AC unit is too large for the space it’s installed in, the output temperature will be too low and cause the evaporator coil to freeze up. The best way to fix this issue is by having a professional come out and properly size your system.

5. Faulty Thermostat

Faulty Thermostat

If your thermostat is faulty or incorrectly set, it could cause your air conditioner’s output temperature to be too low, resulting in the freezing up of the coils. To fix this problem, you should have a professional come out and check the thermostat and replace it if necessary.

These are just a few of the possible causes for an AC unit freezing up, but with proper maintenance and regular inspections, you can avoid a lot of these problems. If you ever experience your AC unit freezing up, contact a professional for help. They can identify the issue and provide you with the best solution for getting your comfort back!

Hopefully, this article has helped you understand why your air conditioner may be freezing up, and what steps to take in order to fix it. Remember that proper maintenance and regular inspections are key to ensuring your AC stays in optimal condition! If you’re still having issues with your air conditioner, don’t hesitate to contact a professional for help. They can diagnose the issue quickly and get your system running smoothly again in no time!