Dryer Vent Installation & Rerouting

Lint buildup in dryer exhaust vents is the number one cause of dryer fires in Canadian homes, and Toronto Fire Services responds to dozens of dryer-related fires across the GTA every year. A properly installed dryer vent provides a clear, short path from the dryer to an exterior wall or roof cap, using rigid or semi-rigid metal duct that resists lint accumulation, withstands exhaust temperatures, and meets Ontario Building Code requirements. Yet thousands of GTA homes and condos have dryer vents that are too long, use prohibited materials, are partially blocked, or — in the worst cases — exhaust into the wall cavity, attic, or crawlspace instead of to the exterior. Ontario Building Code limits dryer exhaust duct runs to a maximum equivalent length of 25 feet, with each 90-degree elbow deducting 5 feet from that allowance. Many older Toronto homes, especially row houses and semi-detached homes in neighbourhoods like the Annex, Roncesvalles, and Leslieville, have laundry relocated to upper floors or interior rooms where the path to an exterior wall is long and involves multiple turns. Rerouting the vent to find a shorter, straighter path — or upgrading to a dryer booster fan for runs that exceed 25 feet — is essential for safe, efficient dryer operation. Vinyl and foil flex duct, once commonly used, are fire hazards that trap lint in their ridged interiors and are no longer code-compliant for dryer exhaust. Every dryer vent installation should use smooth-wall rigid aluminum or galvanized steel duct with foil tape (not screws) at joints, because screw tips protruding into the airstream catch lint and accelerate buildup. GTA condo dryer venting presents unique challenges. Many Toronto highrise and midrise condos route dryer exhaust through long shared chaseways to the roof or exterior wall, with individual unit connections that can be 30 to 50 feet or more. These runs require booster fans, regular professional cleaning, and periodic inspection to prevent the lint accumulation that has caused evacuations in GTA condo buildings. Unit owners renovating laundry areas must coordinate with building management to ensure any vent modifications comply with the condo corporation's mechanical specifications. A standard dryer vent installation or reroute in a GTA home runs $200 to $600 depending on the length of the run, wall or roof penetration required, and accessibility.

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