Helping Greater Toronto Area homeowners find skilled ductwork and ventilation professionals, understand Ontario Building Code mechanical requirements, and make informed decisions about HVAC distribution projects in their homes. Part of the Toronto Construction Network.
The ductwork in a home is the circulatory system of the HVAC -- it carries heated and cooled air to every room, returns stale air to the furnace or air handler, exhausts moisture and contaminants to the exterior, and provides the make-up air that keeps the building at safe pressure. When ductwork is properly designed, installed, sealed, and maintained, every room in the house is comfortable, energy bills are predictable, and indoor air quality stays healthy. When it is not -- undersized trunks, leaking joints, crushed flex duct, disconnected branches, uninsulated runs through cold attics -- the result is hot and cold spots, whistling and rattling noises, excessive dust, high utility bills, and sometimes dangerous backdrafting of combustion appliances.
The Greater Toronto Area's housing stock spans more than a century of construction, and each era brought different approaches to air distribution. Pre-war homes in the Annex, Roncesvalles, and Cabbagetown were often built with gravity furnaces and oversized rectangular ducts -- or no ducts at all, relying on radiators and baseboard heat. Post-war bungalows across Scarborough, East York, and Etobicoke typically have original galvanized steel duct systems that have been in service for 50 to 70 years, with corroded interiors, separated joints, and decades of accumulated dust and debris. Modern subdivision homes in Brampton, Vaughan, Milton, and Whitby benefit from engineered duct layouts designed during the framing stage, but even new construction can have problems: excessive use of flex duct, undersized return air, poor sealing at connections, and uninsulated runs through unconditioned spaces.
Toronto Ductwork exists to connect GTA homeowners with the right ductwork professional for their specific project. Whether you need a complete HVAC duct system installed in a home that has never had one, a failing system repaired or replaced, a dryer vent rerouted for fire safety, kitchen or bathroom exhaust properly ducted to the exterior, make-up air installed to prevent backdrafting, professional duct cleaning, or duct sealing and insulation to cut energy waste -- tell us about your project and we match you with contractors whose experience aligns with exactly what you need. We always recommend confirming WSIB coverage, verifying liability insurance, getting a written scope of work, and understanding what is and is not included in the quote before any work begins. Our Duct IQ knowledge base provides free expert answers to ductwork and ventilation questions specific to Toronto and the GTA, and we are part of the Toronto Construction Network, connecting GTA residents with qualified contractors across every construction trade.
Tell us what you need: HVAC duct installation, duct repair or replacement, dryer vent installation, kitchen or bathroom exhaust, make-up air, duct cleaning, or duct sealing and insulation. Include your home type, project scope, and timeline.
We connect you with experienced ductwork and ventilation professionals who specialize in your type of project and serve your area of the GTA. We prioritize contractors familiar with Ontario Building Code Part 6 mechanical requirements and the specific challenges of your home's construction type.
Compare quotes, verify WSIB coverage and insurance, and choose the ductwork professional who best fits your project. Get your ductwork installation or repair done to code, on schedule, and to the quality you expect.
Ductwork projects range from simple dryer vent reroutes to complete whole-home HVAC distribution systems. We connect you with professionals who handle the full scope -- from Manual D load calculations and rigid sheet metal fabrication to flex duct connections, fire dampers, and airflow balancing.
Leaky, uninsulated ductwork wastes 20-30% of the conditioned air your furnace and AC produce. Our matched contractors understand duct sealing with UL-181 rated mastic, Aeroseal technology for inaccessible sections, and proper insulation for runs through unconditioned spaces -- upgrades that pay for themselves within a few heating seasons.
Ontario Building Code Part 6 governs mechanical installations including duct material, clearances from combustibles, fire dampers, return air pathways, and exhaust ventilation requirements. Make-up air is required when exhaust exceeds 75 L/s. Our contractors navigate permits and inspections so your project passes every check.
Our free knowledge base answers ductwork and ventilation questions specific to the GTA -- from installation costs and duct sizing to Ontario Building Code mechanical requirements, dryer vent safety, make-up air rules, and what to expect during a ductwork project.
From complete HVAC duct installation to dryer vents and duct sealing, find the right ductwork professional for every aspect of your project:
Complete HVAC duct system design and installation for new builds and major renovations across the GTA. Manual D load calculations, rigid sheet metal trunk lines and branch duct fabrication, insulated flex duct connections, and OBC Part 6 compliance. Retrofit solutions for older homes without existing ductwork.
Expect $3,000-$15,000 depending on scope and home size.
Repair and replacement for leaking, corroded, or damaged ductwork in GTA homes. Corroded galvanized steel section replacement, disconnected joint repair, crushed flex duct replacement, and full system replacement for end-of-life ductwork. Asbestos assessment coordination for pre-1980 homes.
Costs $1,500-$6,000 depending on scope and accessibility.
Safe dryer vent installation, rerouting, and replacement using rigid aluminum or galvanized steel duct. OBC-compliant runs under 25-foot equivalent length, exterior wall and roof cap termination, dryer booster fans for long runs, and condo-specific solutions. Fire-safe material upgrades from vinyl or foil flex.
Costs $200-$600 per installation.
Range hood ducting to exterior with backdraft dampers, HVI-certified bathroom exhaust fan installation, insulated duct runs to prevent condensation in cold attic spaces, and OBC-compliant mechanical exhaust ventilation. Make-up air assessment for range hoods over 160 CFM.
Costs $500-$2,500 per installation.
Make-up air unit installation for homes with high-CFM exhaust appliances. Motorized damper units with inline heaters, ERV and HRV integration, backdraft prevention for gas furnaces and water heaters, and winter air tempering for GTA climate conditions. Required by OBC when total exhaust exceeds 75 L/s.
Costs $2,000-$5,000 per system.
NADCA-standard source-removal duct cleaning using truck-mounted vacuum systems. Supply duct, return duct, and trunk line cleaning, air handler and evaporator coil housing cleaning, and post-renovation dust removal. Before-and-after airflow assessment included.
Costs $300-$700 per home.
UL-181 rated mastic sealant at all duct joints and seams, Aeroseal technology for inaccessible sections, and R-6/R-8 insulation for duct runs in unconditioned spaces. Energy loss assessment and NRCan EnerGuide compatible documentation. Eliminates 20-30% energy waste from duct leakage.
Costs $1,500-$4,000 per project.
Toronto Ductwork is one of several specialized contractor matching services serving the Greater Toronto Area. Our network includes:
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