Abstract: An HVAC system includes a housing defining an auxiliary aperture, an occupant aperture, a circulation aperture, an inlet opening, a drip aperture, having at least one treatment device disposed therein, and defines a pre-treatment space between the inlet opening and the treatment device. An instrument panel has a façade and a backside opposite the façade and defines a passage extending from the façade to the backside and terminates at the housing. An auxiliary article module is disposed in the passage, abuts the housing and has walls defining an auxiliary article compartment, an auxiliary hole, an outer circulation hole, and a drip hole. The holes and their corresponding apertures are aligned and abutting for receiving air and liquid between the housing and the auxiliary article compartment. A circulation duct extends between the circulation aperture and the pre-treatment space for carrying air therebetween.