Should You Use Recirculated or Fresh Air Mode for Defogging Windows?

[SanMiguel]

Whether to use recirculated or fresh air mode for defogging windows depends on the season: 1. On rainy summer days, turn on fresh air mode and activate the AC to blow cold air for defogging. This is the fastest method to clear fog from the front windows, typically taking just over ten seconds to effectively remove the fog; 2. In winter, you can turn on the heater (without AC) and switch to recirculated air mode. This method is slower, usually taking about ten minutes to dry out the fog and achieve the defogging effect. The recirculated air mode in a car's air conditioning system means that the system is closed off from outside air and only recirculates the air inside the vehicle. Fresh air mode means the system is open to outside air, drawing in and circulating air from outside the vehicle.