EPA will not advocate that air ducts be cleaned apart from on an as-required basis due to the continuing uncertainty about the key benefits of duct cleaning below most conditions. EPA does, however, advocate that if you have a gas burning furnace, stove, or fireplace, they be inspected for http://claytonyzwtm.jiliblog.com/25748373/not-known-factual-statements-about-air-duct-cleaning-orange-county