I found sterling service on a deal find site, thought I would try them out since I have my first baby on the way and didn't think the duct have ever been cleaned. The first thing that was told to me was they were cleaned... I know based on the people that owned the house it wasn't done right... Then I was taken around my basement and was explained that alot of my nice cold air was being leaking out by seams in the duct work. The work that was done was great, clean and once he left I had no idea that work was ever done. He took the time to explain and show me things, he was really respectful of me and my house. He did a great job and i would have him back in a second as well as referring him to family and friends. Its a family owned business and everyone was great to deal with.