Priority Plumbing - Residential Plumbing in Toronto, ON. Priority Plumbing is the best plumbing company with award-winning services in Toronto, ON. Hours of Operation: 24 Hours A Day, 7 Days A Week. Services: PLUMBING - Installation | Repair - Professional, courteous, certified plumbing service for all job sizes; DRAINS - Unclogging | Replacing - Sewer and drain cleaning or replacement and full inspection service; SEWER - Cleaning | Replacement - Hi-tech, efficient sewer cleaning, and replacement services; HEATING - Repair - Expert Boiler & Radiator Maintenance, Repair, and Installation. Service areas: Toronto, North York, East York, Etobicoke, York, Mississauga, Leaside, Burlington, High Park, Rosedale, Bloor West Village, Annex, Beaches, Danforth, Leslieville, Liberty Village, Markland Wood, Don Mills, Vaughan, Concord, Thornhill, Maple, Woodbridge, Brampton, Woodhill, Scarborough, Oakville.