What does the AC in a car's air conditioning mean?

[CourtneyFitz]

AC in a car's air conditioning system refers to the air conditioning cooling switch, which is the power switch for the air conditioning compressor. When the AC button is pressed, the car's air conditioning compressor starts working, and the air blown out by the blower becomes cold. After pressing the AC button, the electromagnetic clutch of the air conditioning compressor engages, causing the compressor to operate, and the car's air conditioning enters the cooling mode. Additional information about automatic air conditioning is as follows: 1. Automatic air conditioning automatically adjusts the interior temperature based on the temperature difference between the inside and outside of the car. 2. When using the air conditioning for heating in winter, the AC light being on does not assist in heating; instead, it causes unnecessary power loss due to the compressor's operation.