I got estimates from 3 companies to do this work. D&M's was the cheapest, and my boyfriend enjoyed speaking with Kurt when he came to our house to do the estimate, so we went with D&M. When I scheduled the work, I was told that it would take a full day and a half, and I was given the distinct impression that there would be more than one person on the job. Only one guy came to the house for the vast majority of the job. The first day, I was told he would arrive between 8 and 8:30, and he did not arrive until after 9. He seemed unsure of exactly how he was going to do it, and said that he would have to talk to Kurt to see how he thought it could be done. He left before the end of the day on both Thursday and Friday because he got called to other jobs. That Friday when I came home from work, I smelled gas in the house and immediately called We Energies. The guy they sent out found a leaky join in the gas supply to the water heater, which the technician had moved to make room for a duct. We Energies kindly repaired the leak, and the technician did apologize, and explain that he didn't have the right couple with him, so he had just used the old one. The technician returned on Monday, Tuesday, and most of Wednesday to finish the job, and was only joined by other D&M guys on Tuesday to install the new thermostat, and by his brother to help finish the job on Wednesday. When he was done, I did have to ask him to fix one of the grates that didn't fully open, and add a sheet metal patch to the ceiling in one of the downstairs closets, as the lathe was exposed. He did not arrive before 9 on any of those days. He did work hard while he was at my house, and I don't believe it was his fault that he didn't have any help. I had the city inspector come out for a permit inspection (D&M said that ductwork alone does not require a permit, but in Wauwatosa it does), which was clear except for insufficient insulation on the ducts in the uninsulated eave space upstairs. The inspector contacted D&M to let them know about the problem, and they scheduled the technician to come back out and re-insulate the ducts. He was again scheduled to be at the house between 8 and 8:30. My boyfriend was waiting for him to let him in, but by 8:45 had to go to work, so left. The technician called me a few minutes after that to let me know that he was at the house, but no one was there. I tried to get a hold of him, but he did not answer his phone and his voicemail was full. I called D&M, who said they would try to get a hold of him. A few days later, they finally did, and he ended up coming out on a Saturday (when we could be around all day) to re-do the insulation at no charge. I should say that the ductwork with zoning works well, and that the women I dealt with on the phone in the office were always very pleasant and helpful. I was unhappy, however, with the fact that not enough people were sent to do the job, so it took much longer than promised, that there was the gas leak issue, and that the technician was not at all punctual.