How long can the car air conditioner be on in winter?

1, the car air conditioner needs to be turned on for about 40 minutes in winter. If it takes too long, the heat dissipation is not good and it is harmful to the car engine.

2. Hazard: In a relatively closed environment, such as a garage, it may lead to carbon dioxide poisoning. It is best to turn on the air conditioner in the open air or in a place with smooth air circulation, and leave some window gaps appropriately. When stopping, the engine runs at idle speed, and the speed is low, resulting in low intake pressure. At this time, the engine will increase the throttle opening and then increase the fuel injection.

3. Precautions for turning on the air conditioner: In a short time after entering the car, open the window or open the external circulation ventilation facilities to introduce fresh air. Don't drive for a long time with the doors and windows closed, let alone sleep or rest for a long time in a closed car.