What to Do When the Car Air Conditioning Is Not Cooling?
2 Answers
Solutions for a car air conditioning system that is not cooling include: 1. Insufficient system pressure due to refrigerant leakage—refill the refrigerant and identify the cause; 2. Leakage in the high-pressure pipe of the air conditioning system, indicated by oily and dirty spots at the leak; 3. Excessive pressure caused by overcharging of refrigerant, moisture or air in the system, excessive lubricant, or expansion valve failure; 4. Low fan speed; 5. Damaged fan or capacitor in the indoor or outdoor unit—if the outdoor unit fan is faulty, symptoms include excessively high exhaust temperature or high pressure; if the indoor unit fan is faulty, symptoms include frost formation inside the unit; 6. Refrigerant leakage or substandard refrigerant quality.
I recently encountered an issue with the air conditioning not cooling properly. First, I checked the cabin air filter myself and found it clogged with dust, which was affecting airflow. Replacing the filter made a big difference. If the improvement isn't satisfactory, it might be due to insufficient refrigerant, requiring a professional to check for leaks and top it up. Compressor failure is another common cause—if you don't hear a humming sound when turning on the AC, it means the compressor isn't working. A dirty condenser causing poor heat dissipation can also lead to weak cooling performance, so avoid parking near dusty areas. Don't overlook these issues during summer driving, as extreme heat can cause fatigue and compromise safety. Addressing minor problems promptly ensures a worry-free experience.
