The National Air Duct Cleaners Association (NADCA) was officially established in the 1980s. It was during that decade that the profession of air duct cleaning came under fire, and the need for a national association to unify duct cleaners became apparent.
Scott Simpson of Simpson Power Vac in Omaha, NE, was one of the original 13 members that started NADCA. He has served as a board member for the association and was also treasurer. Simpson explains that in the early and even mid-1980s, the profession of air duct cleaning was starting to be seen as a sham. And although the profession had been around since the 1940s, Simpson says that even the Environmental Protection Agency (EPA) did not recognize air duct cleaning as beneficial.