Is AC for Cold Air or Hot Air?

[VonElijah]

AC button is the cooling switch of the car air conditioning. When the AC button is pressed, the car air conditioning will cool, so AC is for cold air. The related introduction of car air conditioning cooling is as follows: 1. After pressing the AC button, the compressor clutch will engage, at which point the engine will drive the compressor to operate, allowing the compressor to continuously compress the refrigerant and deliver it to the evaporator. 2. The AC button is the switch for the cold air conditioning. When pressed, the compressor works while the cold/hot knob is adjusted to the cold zone, and the blower (1, 2, 3, 4) is turned on, at which point cold air is blown out. Hot air conditioning does not require pressing the AC button. 3. The AUTO mode is a unique function of the car's automatic air conditioning, which automatically selects cold or hot air based on the set interior temperature. However, the AC button does not need to be activated when cooling is not required, aiming to prevent the compressor from working unnecessarily to save fuel.