Don cleaned our ductwork and I couldn't be more pleased with his work: Don was efficient, clean, polite, explained what he was doing, and took photos of the ductwork before and after to show me what work had been done. When we moved into this house about ten years ago, the ductwork was "cleaned" with the more common vacuum system yet Don showed photos of construction debris and takeaway food wrappers in the ducts from when the house was built almost 40 years ago (the food wrappers had logos from many years ago). Apparently, the vacuum cleaning wasn't very thorough! I would very highly recommend Ductworks and Don to do a great job.