We called Ductworks in Arvada, Colorado, to clean our ducts after ten years without. We are the first owners of our town home, and when the building was first completed in 2002, it was Ductworks that did the pre-inspection duct cleaning. We took that as a good recommendation. My wife suffers from serious asthma, and we need clean conditions, so we felt we were overdue in getting the work done. Felipe and Nicolas worked hard for several hours, were neat and courteous, and left everything in perfect shape. We feel the cleaning has made a difference; my wife and I, who both have respiratory issues, are breathing much better now. Thanks Ductworks!