In Ottawa, a gas furnace replacement typically costs between $4,500 and $9,500 installed in 2026, with most homeowners paying around $6,000 to $7,500 for a properly sized, high-efficiency unit. A basic 96% AFUE single-stage furnace in a straightforward swap runs roughly $4,500–$6,000, a two-stage unit lands around $6,000–$8,000, and a fully modulating variable-speed furnace with a smart thermostat can reach $8,500–$11,000. Electric furnaces are cheaper to install ($3,000–$5,500) but far more expensive to run on Ottawa's electricity rates. The furnace itself is only part of the bill — venting c...
The single biggest driver of your price is the furnace itself. In Ottawa for 2026, a 96% AFUE single-stage natural gas furnace installed runs about $4,500–$6,000 — the workhorse choice for a typical 1,500–2,000 sq ft home. A two-stage furnace, which runs on low fire most of the winter for quieter, more even heat, costs roughly $6,000–$8,000 installed. A modulating variable-speed furnace, the most comfortable and efficient option, runs about $8,500–$11,000 and pairs well with a communicating ther...
Most Ottawa homes need a 60,000–100,000 BTU furnace. Moving up from a 60,000 BTU to a 100,000 BTU unit typically adds $400–$900 to the equipment cost. Proper sizing comes from a heat-loss calculation, not from matching the old unit's nameplate — older homes that have since been insulated or had wind...
A complete Ottawa furnace replacement quote should cover far more than the box in the basement. Standard inclusions are the furnace, removal and disposal of the old unit, a new gas connection and shut-off at the appliance, sheet-metal transitions to your existing plenum and return, condensate drain and pump if needed, PVC intake and exhaust venting through the sidewall, a programmable thermostat, the City of Ottawa mechanical permit, and full commissioning with a combustion and gas-leak test. La...
The extras are where budgets get blown. Converting from an old mid-efficiency furnace that vented up a masonry chimney to a modern condensing unit means new PVC sidewall venting — budget $400–$1,200 — and if a gas water heater is left orphaned on that chimney, it usually needs a stainless liner at $800–$1,800. Older Ottawa homes in Westboro, Hintonburg, and Old Ottawa South frequently need ductwork modifications or a larger return air drop, adding $500–$2,500. Undersized or corroded gas piping m...
Replacing a furnace in a January cold snap costs more — after-hours rates, limited equipment availability, and temporary heat rentals can add $500–$1,500. If your furnace is 15+ years old, planning the swap for spring or early fall almost always saves money.
A furnace replacement in Ottawa requires a mechanical (HVAC) permit from the City of Ottawa, and the work must be performed by a licensed gas technician holding a TSSA G2 or G1 certification. Permit fees are modest — generally $150–$300 for a residential furnace — and a legitimate contractor will include the permit in the quote and arrange the inspection. Any electrical work associated with the install falls under the Ontario Electrical Safety Code and may require an ESA notification. Never acce...
A high-efficiency furnace at 96–98% AFUE will usually cut gas consumption 15–25% versus a 20-year-old unit running near 80%, which in an Ottawa winter translates to roughly $200–$450 a year on a typical Enbridge bill. That payback period matters when you're choosing between a base model and a premium one: the variable-speed upgrade buys comfort and quieter operation more than dramatic fuel savings. Many Ottawa HVAC contractors offer financing in the $80–$150 per month range on a mid-tier system,...
The ranges above are planning numbers — your actual price depends on your home. Get at least three written, itemized quotes from licensed Ottawa HVAC contractors, and insist each one includes an in-person assessment rather than a phone estimate. A proper visit means measuring your home for a heat-loss calculation, inspecting the existing venting and ductwork, checking gas line size, and looking at the electrical panel. Ask each contractor to list equipment make and model, BTU output and AFUE, ve...
A gas furnace replacement in Ottawa costs $4,500–$9,500 installed in 2026, with most homeowners paying $6,000–$7,500. A 96% AFUE single-stage unit runs $4,500–$6,000, two-stage $6,000–$8,000, and a modulating variable-speed furnace $8,500–$11,000 installed.
In Ottawa, the furnace equipment alone typically costs $2,500–$6,000 depending on size and staging, and the installed price lands between $4,500 and $9,500 once labour, venting, permits, thermostat, and removal of the old unit are included.
A straightforward like-for-like furnace replacement in Ottawa runs about $4,500–$6,500 and takes one day. If the job requires new sidewall venting, a chimney liner, ductwork changes, or gas line upsizing, expect $7,000–$10,000 or more.
Older homes in areas like Westboro, Hintonburg, and Old Ottawa South often need extra work: PVC sidewall venting ($400–$1,200), a chimney liner for an orphaned water heater ($800–$1,800), and duct or return-air modifications ($500–$2,500). Budget $7,000–$10,000 total.
Yes. A mechanical permit from the City of Ottawa is required, and the install must be done by a TSSA-certified G2 or G1 gas technician. Permit fees are usually $150–$300 and should be included in your contractor's quote. Unpermitted gas work can void home insurance.