Michael Chan in Markham 2 reviews Markham, ON Joined 2011/04/05 10/10 duct cleaning Duct Cleaning review in Markham About 8 years ago Quick and effiecient. There are some very overpriced companies out there. They also had this mecahanical device that spins to knock debris loose from gaps. I highly recommend them. Thanks guys! Job Price Was this review helpful?