HomeSeal

I got our duct cleaning done from Daniel. He and his employee seemed very professional. I am surprised and was a bit scared after reading the number of negative reviews here. However, thankfully everything went well for me. They arrived on time, professionally cut the missing hole in the vent, put the suction hose on that and then used pressure into the vents. Finally, they closed the holes with a metallic sheet, screwed it and then closed it with a duct tape.
I'd recommend you stay on top of them when they perform the job to make sure they don't miss anything. After all you are spending money, so staying watchful for a couple of hours doesn't hurt.