What Causes Your AC to Freeze Up

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Frozen AC coils

An air conditioning system freezing up can be a frustrating and inconvenient issue. Several factors can contribute to freezing your AC unit, and understanding these causes can help you prevent and address the problem effectively.

Aloha Air Conditioning the leading name for AC repair in Monterey, TN, and here are some common reasons why your AC may freeze up.

Insufficient Airflow

Restricted airflow is one of the primary causes of AC freezing. When the airflow over the evaporator coil is limited, it can cause the coil to become too cold, leading to ice formation. Dirty air filters, closed or blocked vents, or malfunctioning blower fans can all contribute to restricted airflow. Regular air conditioning service cleanings or air filter replacements ensure proper ventilation and can help maintain adequate airflow.

Refrigerant Issues

Improper refrigerant levels can cause the evaporator coil to become excessively cold, leading to freezing. Low refrigerant levels may indicate a leak in the system. Refrigerant leaks should be addressed promptly by an air conditioning contractor or technician who can repair the leak and recharge the system with the appropriate refrigerant.

Clogged Condensate Line

ACs work by transferring heat from inside your home to the outside. This results in moisture that will need to be removed via the condensate line. Clogs in the condensate line can cause the drip tray to overflow. When this happens and the surface of the evaporator coil is cold, freeze-ups can happen which is why the line should be checked during AC maintenance.

If you notice your AC unit freezing up, it’s important to turn off the system and allow it to thaw completely before attempting any troubleshooting. Regular maintenance, including cleaning, proper airflow management, and professional inspections, can help prevent AC freezing. If the problem persists, it’s advisable to consult our expert team at Aloha Air Conditioning to determine the underlying cause. You can count on us for quality AC installation, maintenance, and repair services.

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