3 Common Causes Why Your AC is Freezing Up

3 Common Causes Why Your AC is Freezing Up

With the Arizona sun and the warmer weather approaching, everyone needs a well-functioning AC in their homes. No one likes the stress of scheduling a repair service very often and spending money to fix their AC units. When the weather gets hot, we all rely on our AC for a comfortable indoor environment so that no matter how hot it gets outside, the temperature inside your home suits your needs.

You may have seen that the air conditioner may freeze after working for a while. When this happens, the cold air may not be properly discharged, and eventually, a huge block of ice may form on the evaporator coil. You will notice that the airflow out of the vents is reduced as the ice begins to impede the movement of the air. This means it’s time to investigate the problem.

Here are 3 Common Reasons Which May Be Causing Your AC to Freeze up:

Clogged Condensate Drain Line

The AC unit works by transferring the heat inside your home to outside. The moisture in the air creates condensation, which is drained out by the condensate drain line.

If the drain line is blocked due to any debris or particles, the drip tray can begin to overflow with excess water. This can cause it to freeze if the evaporator coil is too cold. You might need to call an AC repair near you to tackle this issue.

Routine AC maintenance can help prevent such problems and ensure your AC system works smoothly. You need to schedule an air conditioning service near you, so trained technicians can assist you and help prevent such issues.

Low Refrigerant

If your AC system has low refrigerant levels or has decreased due to leakage over time, there will be a reduction in the saturation point temperature of your AC unit, which can cause ice to build up on your AC system. When the refrigerant level reduces, the system doesn’t work efficiently. The reduced pressure can cause the water vapor around it to freeze on the coil’s surface when the temperature goes below 32 °F.

When you schedule air conditioning repair near you, so the technicians can detect the leaks and fix the issue for you.

Dirty Air Filter and Blockage in Ducts

It would help if you change your air filters at least once every three months. Dirty air filters can clog and cause improper airflow. Blocked or damaged ducts can also cause the airflow to reduce.

The condensation can cause the formation of ice on the evaporator coil if this issue isn’t fixed. Changing your air filters will maintain your AC components from freezing. Regular maintenance can help detect and fix damaged ducts, thus preventing the freezing of your AC parts.

How to Prevent this Issue?

Fortunately, you can control this from happening by taking simple precautions. You need to call a technician to check refrigerant leaks, change your air filters regularly, ensure the blower fan is working properly, and check the condensate drain line and vents.


GE Home Services provides you with the best HVAC services in Arizona. You can call them at 480-376-0755 to schedule an appointment with the technician. They provide services in many parts of Arizona and have well-trained and experienced technicians.