Overview (3) Heidi Klum was born in Bergisch Gladbach, a small city near Cologne, Germany, in 1973. Her career as a top fashion model and swimsuit star began almost by accident when, on a lark, she submitted photos to a model competition hosted by Petra, a young woman's magazine.
The National Air Duct Cleaners Association recommends getting your air ducts cleaned every three to five years. Ed Mack, owner of Air Duct Professionals in Lake Elsinore, California, says homeowners should consider doing it every two to five years, depending on their circumstances.
Air ducts' only purpose is to carry cooled or heated air from a homes ventilation system into individual areas in the home. The EPA recommends that you DO NOT clean your home's air ducts regularly, but only as-needed. Cleaning Air Ducts As needed means: 1  If the air ducts have been contaminated with mold and mildew.