Should You Use Internal or External Air Circulation When Driving in Winter?

[KinsleyDella]

When driving in winter, it is advisable to use the internal air circulation mode. During winter, the external temperature is low, and maintaining warmth inside the car is essential. Internal circulation prevents outside air from entering the vehicle, instead recirculating the existing air inside the car. The primary purpose of internal circulation is to block harmful external particles from entering with fresh air while also helping to retain warmth. However, during prolonged highway driving, extended use of internal circulation without ventilation can lead to stale and stuffy air inside the car. In such cases, switching to external circulation is necessary to allow fresh air from outside to enter. Alternating between internal and external circulation ensures both a comfortable cabin temperature and a supply of fresh air, enhancing overall driving comfort.