Your Indoor Air Quality Has Room to Improve Trust an established air duct cleaning company in St. Michael, MN Your HVAC system is made up of a lot of moving parts, and they all need to be properly maintained. Wright Furnace & Duct Cleaning is an air duct cleaning company that helps St. Michael, MN homeowners keep their homes safe and energy-efficient through a variety of cleaning and maintenance services. In addition to air ducts, we work on air conditioners, air exchangers and furnaces. Plus, we offer dryer vent cleaning, to keep homes safe from fires.