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What are the reasons for the car air conditioner not cooling?

2 Answers

WilliamLynn

07/24/25 2:47am

The reasons for the car air conditioner not cooling are: 1. Lack of refrigerant in the car air conditioner; 2. Damage to the air conditioner flap; 3. The air conditioner condenser is too dirty and blocks the air outlet; 4. Damage to the air conditioner compressor, throttle valve, or expansion valve; 5. The air conditioner belt is aged or too loose, affecting normal operation; 6. There is water in the air conditioner pipeline, reducing the cooling capacity. The car air conditioner is composed of a compressor, condenser, throttle element, evaporator, fan, and necessary control components, used to regulate the temperature and humidity inside the car and provide a comfortable environment for passengers. When the air conditioner compressor is working, it sucks in low-pressure, low-temperature gaseous refrigerant from the evaporator, compresses it into high-pressure, high-temperature gaseous refrigerant, and discharges it into the condenser.

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MacJace

08/10/25 10:25pm

I've encountered the issue of the air conditioning not being cold several times, and I feel the most common causes are insufficient refrigerant or leaks. If the compressor is broken, it directly affects the cold air output, especially in hot weather when the compressor can't keep up with the load. A clogged filter is another main reason; too much dust can block the cold airflow, and regular cleaning or replacement can solve the problem. Additionally, dust accumulation on the condenser or a non-working fan can also reduce efficiency. I once experienced a fan malfunction in the summer that prevented cold air from coming out, so I recommend checking the system pressure or for any electrical leaks. If you can't fix it yourself, it's better to go to a repair shop for a professional diagnosis to avoid turning a small issue into a major fault. Driving with ineffective air conditioning can lead to fatigue, so pay attention to safety and comfort. Regular maintenance can extend the life of your air conditioning system.

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