Abstract: A vehicle HVAC system includes a HVAC components such as a duct, vent, manually adjustable airflow control head, toggle or housing manufactured from a molded plastic material having an antimicrobial additive. The antimicrobial additive is preferably introduced as an additive during molding of the HVAC components that are typically injection or blow molded parts. Usage of a plastic having an antimicrobial additive continuously fights the growth of microbes such as most common bacteria, yeasts, molds and fungi that cause stains, odors and product degradation that can cause stains, odors and product degradation. The antimicrobial additive becomes an integral part of the HVAC components and therefore is maintenance free.