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What are the common reasons for insufficient cooling in car air conditioning?

1 Answers

LaEden

07/30/25 6:55am

The reasons for insufficient cooling in car air conditioning may include: 1. Excessive impurities in the refrigerant and refrigeration oil of the car air conditioning system: This can clog the filter screen, reducing cooling efficiency and decreasing the flow of refrigerant to the expansion valve, leading to a lack of cooling. 2. A loose compressor drive belt or reduced heat dissipation capacity of the condenser, which diminishes the air conditioning's cooling performance: Low power supply or voltage can weaken the compressor's electromagnetic clutch's suction force, or oil contamination between the clutch pressure plate and the belt pulley can cause a 'slipping' effect similar to a loose drive belt, resulting in poor cooling. 3. Issues with the refrigerant in the car air conditioning system: The system consists of multiple metal pipes with tiny gaps between them, allowing for slight refrigerant leakage. Additionally, the desiccant bottle in the system absorbs moisture and retains some refrigerant, so when the refrigerant level drops below a certain point, the cooling capacity of the car air conditioning decreases.

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