Which button is the AC button in a car and what is its function?

[LaAlyssa]

Car AC button is the cooling switch of the vehicle's air conditioning system, its function is to activate the air conditioning compressor, so that the air blown out by the blower becomes cold. The car air conditioning system not only includes the compressor, but also components such as the condenser, evaporator, and expansion valve. The compressor is one of the most important parts of the refrigeration system, responsible for compressing and transporting refrigerant vapor. To get cold air in the car, the AC switch must be turned on, otherwise the air conditioning system will only have the blower working, delivering air at normal temperature. In hot summer, when the AC button is turned on, the temperature control should be adjusted to the blue position. For automatic air conditioning, you can set a desired temperature and then press the AUTO button, the system will automatically adjust the interior temperature.