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.
Cleaning companies recommend you have your air ducts cleaned in order to reduce health issues and improve the energy efficiency of your system, but how necessary is it? As an air duct cleaning can cost anywhere from about $450 to $1,000, you want to be sure you are getting your moneyâs worth.