Can the air conditioning cool when the engine is off?

[LaDelaney]

You can turn on the air conditioning when the car engine is off, but the air blown by the blower is just natural wind. Here is the relevant information: 1. Specific reason: The air conditioning compressor is driven by the engine's power, so when the car is off, the compressor naturally stops working. The natural wind blown by the blower is powered by the battery, and excessive use of the blower may lead to long-term battery drain. 2. Precautions: Poor air exchange inside and outside the car when running the air conditioning while parked can easily lead to oxygen deprivation, which is harmful to health. The stagnant air inside the car may not circulate properly, and closing the windows could cause people to fall asleep comfortably but unknowingly suffer from oxygen deprivation or poisoning. It is recommended to slightly open the windows when sleeping with the air conditioning on.