I hired Advanced Furnace to clean my duct work. I could not have asked for any better service from the time I called the office to schedule to the time that their service men left. The office staff was courteous and answered all of my questions. The service men were prompt, courteous, and efficient. They did a great job and they were so clean, I never even would have know they were in my home. I would use Advanced again and would not hesitate to recommend them. Thank You Advanced Furnace!!!