How to Use the Car's Internal Air Recirculation?

[HoldenRose]

The method to use the car's internal air recirculation is: press the corresponding button to switch the air conditioning mode to internal circulation. The differences between internal and external air circulation in a car: 1. The method of air circulation is different: external circulation draws air from outside the car, which is then cooled or heated by the air conditioning system before being blown out through the vents; internal circulation draws air from inside the car. 2. The symbols on the car's air conditioning panel are different: the symbol for external circulation is from outside to inside; the indicator for internal circulation is an arrow pointing inward. 3. The functions are different: external circulation brings fresh air from outside into the car to maintain air quality inside; internal circulation effectively prevents external dust and harmful gases from entering the car, and can enhance the cooling and heating effects of the air conditioning system.