Why can it still cool without turning on the AC?
1 Answers
"Not turning on the AC switch means the compressor is not working, and the air coming out of the car's air vents is at natural temperature, creating the illusion that the car can cool without the AC. The function of the car AC button: The AC button in a car is the switch for the onboard air conditioning compressor, controlling its operation. The cold air from the car's air conditioning system comes from the operation of the onboard air conditioning system, which requires the compressor to work. In other words, only when the AC button is pressed will the compressor operate, and the air blown out by the blower will be cold. Unlike home air conditioning systems, the heat for the car's air conditioning comes from the engine's coolant, which absorbs heat from the engine and is then blown into the cabin by the blower. Therefore, heating does not require the air conditioning compressor to be turned on. Correct usage of car air conditioning: Turn off the air conditioning a few minutes before reaching your destination, while keeping the blower running to evaporate moisture from the condenser, ensuring relative dryness in the air conditioning system. This reduces bacterial growth and odor formation. The air conditioning should also be turned on only after the engine has started. During daily use, even with an air filter, some dust can enter the ducts. If the air conditioning is consistently used at low fan speeds, dirt can accumulate inside, leading to odors over time and affecting health. In hot weather, it's best to start by opening the external circulation, rolling down all windows, driving for a few minutes, then closing the windows and switching back to internal circulation. This method cools the cabin the fastest."
