Air Duct: Description and Operation

The ducting is the network of tubing used to get conditioned air from the HVAC module to the instrument panel and rear seat outlets. There are four major ducts that are attached to the air distribution chamber.

1. Cross Car Ducts.
2. Rear Seat Duct.
3. Heater Duct.
4. Defrost and Side Window Duct.

The cross car ducts are attached to the instrument panel carrier. It receives air from the distribution chamber.

The rear seat duct receives air from the bottom of the distribution chamber and delivers it through two outlets at the rear of the front seat center arm rest or console.

The heater ducts are part of the insulator panels located on either side of the vehicle and distribute heater air to the front occupants.
The defroster and side window ducts are attached to the top of the HVAC module and distribute the air to the windshield and the front side windows.