What Are the Reasons for Normal AC Pressure But No Cooling?

[McJude]

Reasons why a car's AC has normal pressure but does not cool: 1. Lack of refrigerant: Car AC systems typically require refrigerant replenishment every 2~3 years. 2. Damaged air blend door: The blend door motor, usually located in the lower middle part of the dashboard, acts as the main switch for AC vents. Even if the AC can cool, cold air may only seep through gaps, failing to achieve proper cooling. If no air comes out from any vents when the AC is turned on, the blend door motor needs replacement, which requires dashboard removal. 3. Dirty condenser: Cleaning the radiator and condenser primarily aims to improve heat dissipation. 4. Faulty AC compressor, throttle valve, or expansion valve: Malfunctions in the expansion valve or throttle valve directly lead to poor AC performance. 5. Worn or loose belt: During operation, slipping may occur, causing belt breakage, unusual noises, loss of power assistance, and poor AC performance.