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Frozen Coils in Summer: How Is That Possible?

Frozen Coils in Summer: How Is That Possible?
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Understanding and Preventing Frozen AC Coils in Summer

Evaporator and condenser coils are crucial components of your air conditioning unit, responsible for the heat transfer and cooling processes. When ice buildup starts to cover these coils, it's a clear sign that something is wrong with your system. Let’s explore the common causes of frozen coils and how to address them.

Damaged Blower Fan

The blower fan is essential for circulating air through your home by drawing in warm air and pushing out cool air. When the blower fan is damaged, airflow is significantly reduced, leading to condensation buildup on your coils. This condensation can freeze, causing your coils to ice up. Addressing this issue promptly can prevent further damage and additional repair costs.

Clogged Air Filters

Air filters play a vital role in maintaining clean airflow within your air conditioner. When air filters become clogged with dirt, mold, and other airborne pollutants, they obstruct airflow, causing air to become trapped around the coils. This trapped air can freeze, leading to system breakdowns. Regularly checking and replacing your air filters can prevent this issue and keep your system running smoothly.

Faulty Thermostat

Your thermostat regulates your AC's operation, ensuring it maintains the desired temperature. A faulty thermostat can cause your AC to work harder than necessary or run too cold, leading to ice buildup on the coils. If your thermostat is malfunctioning, consider recalibrating it or upgrading to a programmable thermostat for better control. For expert advice on thermostat issues, contact the professionals at Kirk Air Conditioning & Heating.

Dirty Condenser

The condenser unit, located outside your home, often goes unchecked and uncleaned. Dirt, mold, and other debris can accumulate on the condenser, impairing the cooling process and causing ice buildup on the coils. This added strain can overheat your AC and shorten its lifespan. Regularly cleaning the condenser with a soft brush or water can help prevent these problems and ensure efficient operation.

Refrigerant Issues

Refrigerant is the chemical responsible for cooling your home, and issues with refrigerant levels can pose health risks and harm your AC system. Low refrigerant levels are a common cause of frozen coils. Refrigerant leaks not only reduce efficiency but can also lead to costly repairs. If you suspect a refrigerant issue, contact the experts at Kirk Air Conditioning & Heating for immediate inspection and repair.

Need Assistance with Your AC?

Our friendly HVAC team is ready to assist you with any AC problems you may encounter. From damaged blower fans to refrigerant issues, we provide comprehensive solutions to keep your system running efficiently all summer long.

For expert AC repair and maintenance services, call us at (972) 435-7593 today! Our experienced technicians are here to ensure your home stays cool and comfortable.


By addressing these common causes of frozen coils, you can prevent costly repairs and maintain a comfortable home environment throughout the summer. Don't hesitate to reach out to us for all your air conditioning needs.

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