What does AC mean on the air conditioner?
2 Answers
AC on the air conditioner is the abbreviation of Air Conditioning, which is the cooling switch of the air conditioner and also the power switch of the air conditioner compressor. When the AC button is pressed, the compressor of the car air conditioner will start working, and the air blown out by the blower will become cold. After pressing the AC switch, the electromagnetic clutch of the air conditioner compressor will engage, causing the compressor to operate, and the car air conditioner will enter the cooling mode. The knob outside the AC labeled MAX means large, while MIN means small. If the car is equipped with an automatic air conditioner, simply press the AC button and then the AUTO button, and the automatic air conditioner will adjust the interior temperature based on the temperature difference between the inside and outside of the car. If you need warm air in winter, be careful not to press the AC button, as it not only consumes more fuel but also blows cold air. This is because the car's heating process does not require the compressor to be turned on; the heat for the car's warm air comes from the engine's cooling water.
That AC button on the air conditioning panel essentially means the cooling switch. When I first bought my car, I was also puzzled by it. Later, after checking some information, I learned that AC stands for Air Conditioning. Pressing this button activates the compressor, allowing the refrigerant to circulate and cool the air. For example, on a summer day when the car interior reaches 40 degrees Celsius due to the sun, turning on the fan only blows hot air. At this point, you must press the AC button, and after a few dozen seconds, cool air will start blowing out. If you don't press the AC button, even if you set the temperature to the lowest, you'll only get natural air from outside. In winter, you don't need to use it because the residual heat from the engine is enough to keep the car warm. However, when the windshield fogs up on rainy days, turning on the AC with the external circulation quickly removes the fog—because the cold air rapidly lowers the glass temperature, reducing the condensation of water vapor.
