These guys do duct cleaning and chimney cleaning and they also clean exhaust vents. So I had a problem with my bathroom exhaust system. The duct connecting the bathroom fan to the exhaust opening out the roof became disconnected. So moisture from the bathroom was being blown into the attic space(and creating moisture damage). I called the guys at Dr. Duct and they were able to come a few weeks later. When the guys came, they were very courteous and even took their shoes off as not to track dirt and snow into the house. The climbed up into the attic and took a «before» picture. They then re-connected the duct and held it in place with 2 screws and some duct tape. They then took an «after» picture. They showed us both pictures to show us what they had done. It was a quick job and they were in and out in less than 30 minutes. The cost was reasonable. I have not had any other services from this company, but I was happy with the job they did, and I would not hesitate to hire them for duct cleaning in the future.