Imad and his assistant Peter did a quick, efficient, and thorough job cleaning all the ducts in our three-story house. They were tidy and careful and left everything as clean as they had found it. Imad cheerfully explained everything they were doing and why, which I very much appreciated. He also pointed out that the joints of the ducts visible in the basement needed to be taped to stop them from leaking, and that the basement bedroom had a ceiling vent to push air into the room, but no vent to let air out of the room – both problems that we intend to fix as soon as possible. We will definitely be asking Alpha Carpet & Duct cleaning to have Imad do our next duct cleaning!