Nothing is worse than coming home to your Chicago or Northwest Indiana home and finding ice on your air conditioner. With warmer weather in Chicago slowly passing us by, we know how important a solid conditioning system is. So, What Causes Air Conditioners To Freeze Up?

Two-thirds of U.S. homes have air conditioning, according to the DOE (DOE). If you have an air conditioning problem, leave it to our Quality Services professionals—we’ll take care of it.

When you contact our heating and cooling repair services close to Chicago, IL for help with your frozen air conditioning system, we will do a comprehensive inspection, identify the problem, and give recommendations on how to avoid this problem in the future.

Common causes of air conditioner freezing include:

1. Inadequate Airflow

Inadequate ventilation is a major cause of a frozen air conditioning system. Damaged air ducts might prevent warm air from reaching the evaporator coils, causing condensation. The compressor will keep running, and the condensation may turn to ice. Our technicians can inspect your ducting for obstructions or leaks to increase airflow 

What Causes Air Conditioners To Freeze Up?

and minimize ice buildup. Call us.

2. A filthy air filter

Replace air filters every one to three months. If you do not replace or clean your air filter, it may become dusty or blocked, resulting in poor airflow. When there is no air passing through the evaporator coil, ice will form. By changing your air filter, you may prevent your air conditioning components from freezing. 

3. Low levels of refrigerant

Ice can form on your air conditioning system if your system has low refrigerant levels or is leaking refrigerant. Insufficient refrigerant can cause your system to malfunction and cause water vapor to freeze on the coil.


In most cases, low levels of refrigerant are brought on by a leak that occurs somewhere else in the system. Our trained technicians are able to inspect your air conditioning system, locate the source of the leak, and make the necessary repairs.

4. Defective Blower Fan

A faulty blower fan could result in insufficient airflow, causing the coil to freeze. If you feel your blower fan isn’t operating, contact one of our specialists right away. A broken blower fan can cause problems with your complete heating and cooling system. Our experts will examine your blower fan and recommend the best course of action to ensure system efficiency.

5. Obstructed Condensate Drain Line

The air conditioning system in your Chicago or Northwest Indiana house works by transporting heat from inside to outside. Condensation is caused by moisture in the air and drains out of your home via the condensate drain line.


If your condensate drain line clogs, the drip tray may overflow with air moisture. If the surface of the evaporator coil is excessively cold, this problem may freeze. Our Quality Services Inc. personnel are extremely competent and knowledgeable about this issue. We will flush and clear your condensate drain pipe to ensure that your cooling equipment functions properly.

Routine HVAC maintenance can avoid this and guarantee your system is working properly. Make sure to inquire about our maintenance services from our experts.

We Can Handle Any Air Conditioning Issues You May Have

Whether you’re dealing with frozen air conditioning equipment or another issue with your system, or wanting to know How Many Air Conditioner BTUs Do I Need?” our Quality Services experts are ready to help. We’re the most reliable heating, cooling, and plumbing business in Chicagoland and Northwest Indiana. Contact our furnace repair Chicagoland experts today by dialing 708-748-1946 or submitting an online service request.

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