Dial One Professional Duct Cleaning  ™  is the premier duct  cleaning company in the Greater Toronto Area.  Check us out on Homestars.com: Who to hire, Where to Buy and  Who to Avoid.   Homestars.com enables homeowners to write a review and to  share their experience.  The ratings are all from customers. DialOne is currently rated at 9.9.  Toronto 416.970.4039 Durham 905.509.5553 Toll-FREE 1.800.679.7479 Areas served: Brampton, Concord, Etobicoke, Markham,  Mississauga, Newmarket, North York, Oakville, Richmond Hill,  Scarborough, Thornhill, Toronto, Unionville, Vaughan,  Woodbridge, Pickering, Ajax, Whitby, Oshawa, Bowmanville, etc.   Not all Duct Cleaners are Equal Dial One Duct Cleaners provides duct and furnace cleaning services Toronto, Mississauga, Maple, Woodbridge, Courtice, Bowmanville, Pickering, Ajax, Whitby, Oshawa, Port Perry, Clarington, Unionville, Markham, Uxbridge, Durham Region, Scarborough, Markham,