Why is the car air conditioning not cooling properly?

[CoraRose]

Here are the reasons why car air conditioning may not be cooling properly: 1. Insufficient cooling - First determine if the air filter is clogged, resulting in reduced airflow. Many cases are caused by this. If the air is cool enough but the airflow is insufficient, it will feel like inadequate cooling. Replacing the air filter can solve this. 2. If the air filter is not clogged but airflow is still low, and the AC system shows no faults, this may be caused by excessive dust on the evaporator coil, requiring AC system cleaning. Generally, it's recommended to replace the air filter twice a year (one for winter, one for summer), and clean the AC system every one or two years depending on usage frequency. Cleaning should be done in summer; winter heating doesn't require cleaning. 3. A dirty condenser is another reason for poor cooling. Located in front of the radiator, the condenser is used to dissipate heat from the refrigerant. It can often get clogged with debris like cotton fibers, leading to poor heat dissipation and reduced cooling efficiency. 4. Low refrigerant level. If there's insufficient refrigerant in the AC system pipelines, pressure decreases, reducing heat absorption capacity and resulting in poor cooling. If there's no refrigerant at all, the system won't cool at all. Refrigerant needs to be refilled and leaks checked. 5. Faulty components in the AC system. Issues like compressor failure or expansion valve damage require inspection and repair at a 4S shop.