What does the A/C switch in a car mean?

1 Answers
DiConnor
07/29/25 9:11am
The A/C button in the car's air conditioning system is the switch for the vehicle's air conditioning compressor. Its function is to control the on/off of the compressor. When the A/C switch is pressed, the air conditioning compressor starts working. Only when the A/C switch is turned on will the car's air conditioning start cooling. If the A/C switch is not turned on, the car's air conditioning will not cool, and it will blow natural air instead. Precautions for using the air conditioning are as follows: 1. Using the air conditioning in summer: When the weather is hot and you need to turn on the air conditioning to cool down, press the A/C button, adjust the temperature control knob to the blue section, and then turn on the fan switch. The indicator light will illuminate, and the car's air conditioning compressor will start working, blowing cold air from the vents. 2. Using the air conditioning in winter: When you need warm air in winter, adjust the temperature control knob to the red section and turn on the fan switch to get warm air. There is no need to press the A/C button. The heating function of the car's air conditioning is not related to the compressor. The warm air is provided by the car's radiator and then blown into the cabin by the blower, with almost no energy consumption, so there is no need to turn on the A/C button.
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