Testimonials Ruth Mentzer “I was totally impressed with the duct cleaning and installation of the Air Purifying System on April 3 2007. I am confident that this will make a significant difference in the quality of air in my home.” “. . . I will continue to recommend Duct Works Limited, and your fine products and services to as many people as possible. ” Paul & Cass Frey “These guys are great! They showed great respect in my home. And what a wonderful job they did, the duct sanitation really made our home smell fresh and clean.  Thank you!” Kathleen Watson “I would highly recommend your service to anybody.”