Concealed behind your walls and mostly ignored, your air ducts serve as vital pathways that deliver cool air throughout your home during the year. While they may be unseen, your air ducts are working nearly year round, whenever you have your air conditioner running. Attached to your HVAC system, air ducts transfer the air from these systems throughout your home. What many homeowners don’t realize, though, is that your air ducts, in nearly constant use, continually accumulate dust, grime, debris, pet dander and allergens throughout the year. In fact, according to National Air Duct Cleaners Association the average American home produces 40 pounds of dust per year! Don't forget about your dryer vents they can cause severe dmage and create fires in your home.