Distribution Housing
- Defroster damper
- Ventilation damper
- Floor damper
- Temperature damper.
By changing the direction of the dampers in the distribution housing, air is directed from the fan through the various air ducts out to the passenger compartment.
The temperature is regulated by mixing hot and cold air. The temperature damper is regulated by an actuator motor in vehicles with manual climate control (MCC). Electronic climate control (ECC) has two actuator motors and a split temperature damper. This makes it possible to have different temperatures on the driver's side and the passenger side. The dampers are regulated proportionally to ensure that the passenger compartment achieves the selected temperature.