What Causes Car Air Conditioning Not to Cool?

[Noelle]

Car air conditioning not cooling may be due to the following reasons: 1. Condenser: The condenser is a component that is often overlooked. After prolonged driving, a lot of dust accumulates on the condenser. If driving frequently on dusty roads, even more dust will gather. Excessive dust on the condenser significantly reduces its heat dissipation efficiency, leading to poor cooling performance of the air conditioning. 2. Damaged air conditioning compressor, throttle valve, or expansion valve: While the air conditioning compressor rarely fails, malfunctions in the expansion valve or throttle valve can directly cause poor cooling. 3. Lack of refrigerant: Since the sealing of air conditioning systems is not absolute, refrigerant tends to dissipate over time. Therefore, most vehicles require refrigerant replenishment every 2-3 years. If the car's air conditioning and cooling equipment are not functioning properly, poor cooling may occur shortly after refrigerant recharge, indicating possible condenser leakage.