Why is the car air conditioning compressor running but not cooling?

1 Answers
Shane
07/30/25 4:09am
There are several reasons why a car's air conditioning compressor may be running but not cooling: 1. Lack of refrigerant: Car air conditioning systems typically require refrigerant (Freon) replenishment every 2-3 years, with some vehicles needing annual refills. Even with tight seals, refrigerant can still leak, especially if there are minor leaks in the AC piping or condenser. 2. Damaged air blend door: The blend door actuator, usually located in the lower middle section of the dashboard, serves as the main switch for air vents. If it's damaged, the switch fails, allowing cold air to escape only through gaps. 3. Dirty condenser: The primary function of the condenser is heat dissipation. When springtime poplar and willow catkins accumulate on the condenser, it can lead to engine overheating or poor AC performance.
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