Can the car air conditioner be turned on without starting the engine?

[AlinaMarie]

You can turn on the car air conditioner without starting the engine, but the air blown out by the blower will only be the normal air inside the cabin. This is because the air conditioning compressor is driven by the engine's power. If the engine is not running, the compressor naturally won't work. The car air conditioning system is a device designed to cool, heat, ventilate, and purify the air inside the cabin. It provides a comfortable environment for passengers, reduces driver fatigue, and improves driving safety. The air conditioning system has become one of the indicators to measure whether a car is fully equipped. Generally, the air conditioning system includes cooling, heating, and ventilation devices. This combined system makes full use of the limited space inside the car, featuring a simple structure and ease of operation.