Established in 1977, Air Systems Inc. specializes in the designing, fabrication/installation of sheet metal and heating, ventilation and air conditioning (HVAC) systems in commercial, industrial as well as institutional projects. It offers a wide range of services, such as design build projects, sheet metal fabrication, sheet metal installation, 3-D AutoCAD design/estimating and HVAC fabrication. The company s fabrication process involves HVAC duct work, round pipe and fittings, spiral duct installation and drain pans. The company has worked on several projects, such as Denver International Airport, Concourse A , FAA Tower, Train Tunnels and Fuel Farm.