Should the Car Use Internal or External Air Circulation in Winter?

[VictoriaFitz]

Whether to use internal or external air circulation in winter depends on the situation. During winter driving, the car is generally in a closed state, and prolonged use of internal circulation will degrade the air quality inside the car. For short trips, internal circulation is sufficient as it heats up quickly, and the air quality inside the car won't deteriorate too rapidly in a short time. For long-distance driving, you can consider using internal circulation first and then switching to external circulation periodically. However, if the external air quality is poor, be cautious when using external circulation. The car air conditioning system refers to the air conditioning device installed in the car, which can cool, heat, ventilate, and purify the air inside the cabin, providing a comfortable environment for passengers, reducing driver fatigue, and improving driving safety. The car air conditioning system generally includes a cooling device, a heating device, and a ventilation device. This combined system makes full use of the limited space inside the car, featuring a simple structure and easy operation.