What Systems Make Up a Car Air Conditioning System?

2 Answers
BryceLee
07/25/25 4:43pm
Car air conditioning systems are primarily composed of the following subsystems: 1. Refrigeration System: The car air conditioning refrigeration system mainly consists of components such as the air conditioning compressor, evaporator, condenser, receiver-drier, sight glass, and expansion valve. It achieves cooling effects through the continuous phase-change cycle of the refrigerant. 2. Heating System: The heating system comprises components like the heater core, water valve, coolant hoses, and engine coolant, primarily used for heating and defrosting. 3. Ventilation System: This system includes components such as the air intake mode door, blower motor, air mix door, airflow mode door, and air ducts.
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SanEllie
08/11/25 9:55pm
After all these years of repairing cars, I can tell you that the car air conditioning is quite a complex system, mainly composed of four major systems. The refrigeration system is the core, including the compressor, condenser, expansion valve, and evaporator. They work together like a liquid flowing through a pipe, turning the hot air inside the car into cold air. The ventilation system is also crucial, with the blower and air ducts responsible for pushing the cooled air into the cabin. The control system is even more diverse, featuring the switch panel on the driver's seat, along with various sensors and thermostats, automatically adjusting temperature and airflow. Don't forget the air filtration system—the cabin filter is like a small mesh that blocks dust and pollen, ensuring clean air quality. These systems must work in harmony. Once the compressor fails or the condenser gets clogged, the air conditioning stops working, and repairs can be quite troublesome. Regular check-ups are highly recommended.
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