Learning About Commercial Air Conditioning Units

Air Conditioning System Keeps Freezing Up? 3 Possible Causes And How To Fix Them

19 July 2022

Floyd Carroll

During the hot summer, your air conditioning system is likely working overtime to keep your home cool. If you notice your air conditioning system stops cooling and is freezing up outside, this can be caused by many things. Below is more information about this so your home will stay cool and comfortable for you.

Air Flow Blocked

It is important that an air conditioning system has good airflow. If it does not, the humidity will build up on the evaporator coils and freeze. One major cause of this is a dirty air filter. Once your air filter becomes clogged with dirt and other debris, the airflow stops coming into your home.  

Air filters are not expensive, and they are easy to change. Check the air filter often during the hot, summer months. You should do this even more often if you have pets inside your home as their hair can clog the air filter. There are air filters that you can clean instead of replacing them each time they become clogged. 

Mechanical Problems

There are many moving parts inside of an air conditioning system and any of them can become broken, become clogged, or even get stuck. The refrigerant lines may kink which will stop the fan from turning. Refrigerant may also leak which can cause problems. These things will cause the pressure to drop inside the AC system. Once this happens, water droplets build up and then freeze. 

Contact a professional to repair these problems for you. They can determine what is causing this and make the needed repairs for you. This is important as these types of problems can be hard to diagnose and repair. 

Clog in Condensate Drain Line

Another thing that can cause an AC system to freeze up is a clog in the condensate drain line. The condensate drain line is an important part of the system. This is because when heat gets inside your home, the condensate drain line transfers this heat to the outside. Moisture from this air creates condensation on the drain line. Water from the drain line goes into a drip tray. 

If the drain line is clogged the drip tray will overflow, which can cause the AC system to freeze up. If this happens, you will notice ice buildup on the evaporator coil inside the system. To take care of this problem, hire a professional. They will flush the condensate drain line to remove the blockage.

Have your AC unit maintained properly to prevent these and other problems from happening. Reach out to a company like Bremer & Bouman Heating and Cooling to learn more.

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