What is the AC button on the dashboard?

[StMolly]

The AC button on the dashboard is the compressor switch of the car air conditioning, which is also the cooling switch. The following is a related introduction to the AC button: Function of the AC button: In summer, when you turn on the air conditioning for cooling, you need to press the AC switch. The car air conditioning system includes not only the compressor but also components like the condenser, evaporator, and expansion valve. However, the compressor is one of the main components of the refrigeration system, responsible for compressing and transporting refrigerant vapor. Working principle of the AC button: When the AC button is pressed, the electromagnetic clutch of the air conditioning compressor engages, causing the compressor to start operating. Subsequently, the car air conditioning enters the cooling mode. Precautions for the AC button: If you need warm air in winter, make sure not to press the AC button. Doing so not only wastes fuel but may also result in cold air being blown out. This is because the car’s heating system does not require the compressor to be activated. The heat for the car’s warm air comes from the engine’s coolant.