What does AC on a car refer to?

2 Answers
MacEmma
07/28/25 2:21pm
AC on a car refers to the compressor switch of the car air conditioning, which is the cooling switch. The following are the functions of AC: 1. It can cool, heat, ventilate, and purify the air inside the cabin, providing a comfortable environment for passengers, reducing driver fatigue, and improving driving safety. 2. Car air conditioning refers to the air conditioning device installed in the car. The car air conditioning system includes not only the compressor but also components such as the condenser, evaporator, and expansion valve. However, the compressor is one of the most crucial and main components of the refrigeration system, responsible for compressing and transporting refrigerant vapor.
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DelJoseph
08/11/25 10:28pm
I use the AC button in my car every day—it's essentially the air conditioning cooling switch. When pressed, the compressor kicks in, sucking out the hot air inside the car and blowing back cold air. A must-have for summer driving, or it’d be unbearable. However, I’ve noticed that in winter, turning on the heater doesn’t require the AC, as it purely relies on engine heat, which saves fuel. But during rainy seasons, the AC is essential for defogging: when the windshield fogs up, turning on the AC with the external air circulation clears it up in no time. Also, if the AC isn’t used for a long time, bacteria can grow in the pipes, so it’s recommended to run the compressor for a few minutes each month for maintenance. It’s true that using the AC consumes more fuel, but it’s worth it for comfort. By the way, setting the temperature dial to around 22°C is the most comfortable and less likely to cause a cold.
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