What Causes a Car Air Conditioner to Stop Blowing Cold Air?

1 Answers
Damien
07/30/25 9:51am
The reasons why a car air conditioner fails to cool are as follows: 1. Refrigerant issue: Sometimes, the problem lies with the refrigerant in the car's air conditioning system. 2. Filter blockage: Excessive dirt in the refrigerant or the lubricating oil can clog the filter screen, reducing cooling efficiency, increasing resistance, and decreasing the flow of refrigerant to the expansion valve, leading to poor cooling. 3. Saturated dryer: The car's air conditioning system includes a dryer that absorbs moisture from the refrigerant and prevents excessive moisture from reducing cooling capacity. When the desiccant in the dryer becomes saturated, it can no longer filter out moisture. 4. Loose compressor drive belt: Sometimes, the car air conditioner fails to cool because the compressor's drive belt is too loose, or the condenser's heat dissipation capacity is reduced, affecting the air conditioner's cooling performance.
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