When your air conditioner starts icing up, it can be a confusing and frustrating issue. Not only does it affect the system’s ability to cool your home effectively, but it can also lead to more serious damage if not addressed promptly. Ambient Heating & Air Conditioning would like to explore the common reasons why air conditioners ice up and fail to cool efficiently, along with practical solutions to help you resolve the problem.

Low Refrigerant Levels

Refrigerant is the lifeblood of your air conditioning system, circulating through the coils to absorb and remove heat from your home. If there is a refrigerant leak, the levels can drop, causing the pressure in the system to decrease. This drop in pressure leads to a lower temperature in the evaporator coils, which can cause them to freeze over. Have a professional HVAC technician inspect for leaks, repair any found, and recharge the system with the correct amount of refrigerant.

Restricted Airflow

If the airflow across the evaporator coil is restricted, it will not be able absorb enough heat to prevent the condensation on the coil from freezing. Common causes of restricted airflow include dirty air filters, blocked or closed vents, and issues with the blower motor. Replace dirty air filters, ensure all vents are open and unobstructed, and have your blower motor inspected by a professional if necessary.

Faulty AC Fan

The fan in the outdoor unit is responsible for releasing the heat the system extracts from your home. If the fan is malfunctioning or damaged, it can’t release or disperse the heat effectively, leading to the condenser coils icing up. You will want to check the outdoor unit fan for any signs of damage or unusual noise. If the fan isn’t operating correctly, it may need to be repaired or replaced by a technician.

Thermostat Issues

Sometimes the thermostat might malfunction and cause the air conditioner to run continuously, lowering the temperature excessively, especially during cooler nights, which can lead to freezing. Ensure that your thermostat is working correctly and set to a proper temperature. Consider upgrading to a smart thermostat for more control over your cooling system.

Dirty AC Coils

Dirty evaporator coils can also lead to improper heat absorption, causing the coils to freeze. If the coils are covered in dirt and debris, they can’t transfer heat effectively. Have the evaporator coils cleaned by a professional. Regular maintenance is key to preventing this issue.

Central Air Conditioner Maintenance, Repairs, Replacement, Emergency Repairs & More in Springfield, Granby, Holyoke, South Hadley, Monson, Chicopee & Agawam, Massachusetts

An air conditioner that’s icing up and not cooling is a sign that something is wrong with the system. By understanding the common causes and following the solutions provided, you can prevent the issue from worsening and ensure that your home remains comfortable and cool. The best way to avoid air conditioning problems is through regular maintenance and prompt repairs. If you are unsure about diagnosing or fixing the issue yourself, it is always best to call in a professional HVAC technician to ensure the job is done safely and correctly. For help restoring your home air conditioning system, contact Ambient Heating & Air Conditioning today.