An HVAC assembly for a vehicle includes a roof liner with an opening, and a stiffener. The stiffener includes an upper surface, a lower surface, and an integrally formed HVAC duct extending away from the unexposed side of the roof liner toward the roof of the vehicle. The lower surface of the stiffener contacts an unexposed side of the roof liner, and at least substantially surrounds the opening for providing rigidity to the roof liner around the opening in the roof liner. The integrally formed HVAC duct includes an outlet port for providing conditioned air to the vehicle cabin.