How often does a car need to be refilled with refrigerant?

[FelicityRose]

Under normal circumstances without any repairs to the air conditioning system, it is generally every 4-5 years. Principle of car air conditioning: The compressor of the car air conditioning is driven by the engine. The refrigerant is compressed by the compressor into a high-temperature and high-pressure gas, which then dissipates heat through the condenser and turns into a high-pressure liquid. It then passes through the expansion valve to become a low-pressure liquid and randomly enters the evaporator to fully absorb the surrounding heat. Function of car air conditioning: It adjusts and controls the temperature, humidity, air cleanliness, and air flow inside the car compartment to the optimal state, providing a comfortable riding environment for passengers and reducing travel fatigue.