In operation since 1985, Duct Doctor U.S.A. provides a range of janitorial and upholstery cleaning services. It offers residential and commercial air duct cleaning services throughout the United States. The company maintains and restores indoor air quality. Its managers are certified by the National Air Duct Cleaners Association. Duct Doctor U.S.A. serves the defense, education, commercial and health care industries. The company operates through a network of franchises. Duct Doctor U.S.A. maintains a variety of cleaning equipment and fleet of dump trucks. It provides services related to metal ductwork, ductboard and flexduct. The company additionally offers antimicrobial paint applications for interior duct surfaces and air handlers.