What Causes Poor Cooling in Car Air Conditioning?

[MacGrant]

Reasons for poor cooling performance in car air conditioning include: 1. Dirty air filter: After driving for a period, the air filter accumulates dust, insect remains, etc., significantly reducing airflow and leading to poor cooling; 2. Incorrect refrigerant level: Too much or too little refrigerant in the car's air conditioning system can prevent normal cooling; 3. Dirty condenser reducing heat dissipation: Excessive oil or spring willow catkins clogging the condenser may allow the AC to appear operational while actually diminishing cooling efficiency; 4. Poor-quality window film: Besides AC issues, ineffective heat insulation from window films also contributes to the problem.