Is the AC Button for Cold or Warm Air?

[JeremiahFitz]

AC button is for cold air. The AC button is actually the control switch for the car's air conditioning compressor. This means that when the button is pressed, the air conditioning compressor will operate, and the air blown out by the blower will be cold. If you want warm air, there is no need to press the AC button. AUTO is a unique feature of automatic car air conditioning, which automatically selects between cold or warm air based on the set interior temperature. However, the AC button is separate and will not automatically activate when cooling is not needed. The purpose is to prevent the compressor from operating unnecessarily to save fuel.