Furnace Repair Toronto: Emergency, Gas, Replacement and Heat Pump Service Across the GTA
Best Furnace Repair Toronto delivers TSSA G1/G2 licensed gas furnace repair, replacement, high-efficiency conversion, boiler service, heat pump installation, and 24/7 emergency heating dispatch backed by 20+ years of experience under Ontario B149 fuel code. Our technicians diagnose hard ignition lockouts, roll-out switch trips, flame rectification failures, dual-stage gas valve faults, integrated furnace control (IFC) board malfunctions, and cracked heat exchangers using digital manometers, microamp multimeters, and combustion analyzers on Lennox, Carrier, Trane, Goodman, Napoleon, York, Rheem, and Bryant furnaces.
Four transparent CAD scope bands are published on the page: diagnostic from $99, standard repair $150 to $950, major repair $600 to $1,500, and full 95% AFUE high-efficiency replacement $5,500 to $8,500, with the diagnostic fee waived when you authorise the repair on the same visit. ENERGY STAR certified installers file Enbridge Home Efficiency Rebate Plus (up to $6,500) and Canada Greener Homes Grant (up to $5,000) paperwork on your behalf, and every quote itemises parts, labour, and disposal separately before any work begins.
Why Toronto Homeowners Call Us
- TSSA G1 and G2 Licensed Technicians
- 20+ Years GTA Furnace Service
- ENERGY STAR Certified for Enbridge Rebates
- $2M Liability Insurance and WSIB Registered
- Transparent CAD Pricing, No Quote Gating
- Same-Day Emergency Dispatch, 24/7 Cold Snap Response
14 Furnace and Heating Services Across Toronto and the GTA
From a 2 a.m. no-heat emergency to a full high-efficiency conversion with rebate filing, every service below is handled by TSSA G1 and G2 licensed technicians working to Ontario B149 fuel code.
24/7 Dispatch Emergency Furnace Repair Toronto
24/7 same-day dispatch for cold-snap no-heat calls, prioritised within 4 hours across the GTA. After-hours diagnostic runs $199 to $299 CAD, waived when you authorise the repair on the same visit. Every repair meets Ontario B149 fuel code.
Most Common Gas Furnace Repair and Diagnostic Toronto
Diagnostic from $99 CAD, waived on same-visit repair. Thermocouple, flame sensor, capacitor, gas valve, ignition module. Standard part repairs run $150 to $950 CAD, major control board and gas valve replacements up to $1,500 CAD. Every quote itemises diagnostic, parts, labour, and disposal separately.
Rebates Filed Furnace Replacement Toronto
80% AFUE from $3,500 CAD, 95% AFUE from $5,500 CAD. Removal, disposal, and permit included, rebate paperwork filed for you. We replace the furnace end to end: removal, disposal, venting, permit, and commissioning with a combustion analysis.
Radiant Specialists Boiler Repair and Radiant Heating Toronto
Cast-iron and combi-boiler diagnostics, hydronic system balancing, common in older Toronto and Vaughan homes. Diagnostic $99 to $199 CAD. Most repairs $500 to $3,500 CAD (circulator, expansion tank, aquastat, pressure valve, zone controls). Full combi-boiler or cast-iron system replacement $8,000 to $14,000 CAD. We service 70,000 to 200,000 BTU boilers up to 10 zones on Viessmann, Navien, and Weil-McLain systems with Taco and Grundfos circulators.
Furnace Installation Toronto
Right-sized installs with ECM blower and staging options, venting, and Ontario Building Code compliance. Manual J heat-loss calculation to size 40,000 to 120,000 BTU output correctly, vented to Ontario Building Code with System 636 polypropylene, and commissioned with a combustion analysis. Installation completes in 1 to 2 days depending on venting and gas line scope.
High-Efficiency Furnace Conversion Toronto
95% AFUE conversions with rebate coordination, condensing venting, and 15 to 20 percent gas savings. We handle the condensing venting upgrade and file Enbridge Home Efficiency Rebate Plus and Canada Greener Homes Grant paperwork on your behalf.
Furnace Tune-Up Toronto
12-point annual inspection with combustion analysis, CO monitor, and thermostat calibration, $149 to $249 CAD. A yearly tune-up before the first cold snap keeps the system safe and efficient and preserves warranty and insurance coverage.
Annual Furnace Maintenance Toronto
Recurring maintenance with documented records for insurance, warranty, and RentSafeTO landlord certification. Annual maintenance $149 to $249 CAD with 12-point inspection, CO monitor reading, and documented records for insurance, warranty, and RentSafeTO landlord certification. Book before October to lock in a slot ahead of the cold-snap dispatch queue.
Heat Pump Repair and Cold-Climate Heating Toronto
Cold-climate heat pump repair rated to minus 25 Celsius, inverter and defrost faults, dual-fuel hybrids, $500 to $3,500 CAD. Diagnostic $99 to $199 CAD. Most repairs $500 to $3,500 CAD (inverter compressor, reversing valve, defrost control board, auxiliary electric heat strips, R-454B refrigerant recharge). We service Mitsubishi Zuba-Central, Daikin, and Bosch cold-climate systems and retrofit dual-fuel hybrids to gas furnaces.
Commercial Furnace Repair Toronto
Rooftop units, commercial boilers, condo fan coil and Magic-Pak heating for buildings under 10,000 sq ft. Commercial diagnostic $300 to $600 CAD, most rooftop and fan coil repairs $800 to $5,500 CAD. We service small commercial heating for retail, restaurants, offices, and warehouses, WSIB registered and $2M insured, with defined service-window commitments and after-hours dispatch for tenanted spaces.
Thermostat Installation Toronto
Smart and programmable thermostat installation with furnace compatibility and C-wire checks, $199 to $549 CAD. We install smart and programmable thermostats matched to your furnace and wiring, including C-wire additions when needed.
Blower Motor Replacement Toronto
ECM and PSC blower motor diagnosis and replacement, $450 to $1,200 CAD, warranty-valid Ontario parts. PSC motor swap $450 to $650 CAD, ECM variable-speed motor swap $650 to $1,200 CAD. We diagnose the motor type, replace with warranty-valid Ontario distributor parts, verify static duct pressure, and rerun a combustion analysis after the swap.
Furnace Ignition Repair Toronto
Hot surface ignitor, pilot, and flame sensor repair with TSSA compliance, $300 to $650 CAD. We identify the ignition type, clean or replace the failed component, and confirm flame rectification and lockout behaviour.
Heat Exchanger Repair Toronto
Camera inspection, CO-safety diagnosis, and repair $600 to $1,500 CAD or replacement recommendation. We confirm the crack with camera inspection and combustion analysis, shut off the unit if unsafe, and give a written repair-vs-replace recommendation.
Why Toronto Homeowners and Businesses Choose Best Furnace Repair Toronto
Every claim below is checkable against this page or provable on request. That is the whole standard we hold ourselves to.
20+ Years of Furnace Repair Experience
Two decades of TSSA-licensed gas furnace repair, high-efficiency conversions, boiler service, and emergency dispatch across Toronto and the GTA. Furnace work is the whole business, not a sideline to plumbing or general contracting. That focus is why a technician can name the fault on the first visit instead of swapping parts until the heat comes back.
Same-Day GTA Emergency Dispatch
Toronto, Vaughan, Mississauga, Brampton, Markham, Richmond Hill, North York, Scarborough, Etobicoke, and Thornhill. Cold-snap no-heat calls are prioritised within 4 hours, and the diagnostic fee is quoted in CAD before the van leaves. Booking early in the day gives the best chance of a same-afternoon slot during a freeze.
Transparent CAD Pricing Published
Diagnostic $99 to $149, standard repair $150 to $950, major repair $600 to $1,500, full 95% AFUE replacement $5,500 to $8,500. The diagnostic fee is waived when you authorise the repair on the same visit, and every quote itemises diagnostic, parts, labour, and disposal separately.
TSSA G1/G2 Licensed Technicians Only
No apprentices sent alone. Every repair meets Ontario B149 fuel code, and certificate numbers appear on every invoice so you can verify them on the TSSA public registry before work starts. Combustion analysis and a CO reading are part of every visit, not an upsell.
High-Efficiency Rebate Coordination
ENERGY STAR installer for Enbridge Home Efficiency Rebate Plus (up to $6,500 CAD) and the Canada Greener Homes Grant (up to $5,000 CAD). We file the rebate paperwork for you, which is the step most homeowners lose money on when they handle a conversion themselves.
No-Surprise Warranty and Parts
Manufacturer certified for Lennox, Carrier, Trane, Goodman, Napoleon, York, Rheem, and Bryant. We fit Ontario distributor parts so your manufacturer warranty stays valid, and the parts and labour warranty is issued in writing at the end of the job.
What Actually Stops Toronto Homeowners From Calling a Furnace Technician
Four hesitations we hear on first calls, and the straight answers behind each one.
“The diagnostic fee feels like a trap.”
Some contractors charge $200 CAD to show up and discount nothing off the repair. Our diagnostic starts at $99 CAD and is waived when you authorise the repair on the same visit. The fee covers a full combustion analysis, CO check, and a written fault report you keep regardless.
“You cannot tell if the technician is really licensed.”
Ontario requires TSSA G1 or G2 certification for any gas furnace work. Ours hold both. Certificate numbers appear on every invoice per B149 fuel code. You can verify any number on the TSSA public registry before the technician starts.
“Nobody will publish the price.”
Our four CAD scope bands are published on this page: diagnostic $99 to $149, standard repair $150 to $950, major repair $600 to $1,500, full replacement $3,500 to $8,500. Scope named, not hidden behind adjectives.
“The furnace is 15 years old, is it worth repairing?”
At 15 years with an intact heat exchanger, 5 to 10 more service years. At 20+, the 95% AFUE efficiency gap justifies replacement. Written repair-vs-replace recommendation on every diagnostic, with the numbers.
How Our Toronto Furnace Diagnostic Process Works, 5 Steps
Every furnace call follows the same documented process, from booking through post-repair combustion verification.
Booking and Dispatch
Send your postal code, furnace age (or year installed), and symptom. Same-day or next-morning slot booked. Diagnostic fee quoted upfront in CAD.
On-Site Inspection
Full furnace assessment: heat exchanger, ignition system, blower motor, flame sensor, gas valve, combustion analysis with CO monitor, flue draft, and thermostat response.
Written Diagnostic with Options
You receive a written report with the fault identified, parts required, CAD labour and parts cost, and either a repair or replacement recommendation based on furnace age, efficiency, and cost.
Repair or Replacement Scheduled
Repair authorised same-visit gets the diagnostic fee waived. Replacement scheduled within 3 to 5 business days, or 24 hours for an emergency no-heat situation.
Post-Service Verification and Warranty
Combustion analysis re-run, CO reading verified, thermostat cycle tested, and the parts and labour warranty issued in writing, typically 1 to 5 years depending on the part and manufacturer.
What a Toronto Furnace Call Actually Costs
Furnace repair is not a packaged product. It is scope-of-work priced by fault severity, so here are the four bands in full, with no quote form in the way.
Diagnostic Band
- Standard Diagnostic Service Call
- $99 to $149
- After-Hours Emergency Diagnostic
- $199 to $299
- Annual Furnace Tune-Up (12-Point Inspection)
- $149 to $249
Standard Repair Band
- Thermocouple, Flame Sensor, Capacitor Replacement
- $150 to $450
- Ignition Control Module or Ignitor Repair
- $300 to $650
- Blower Motor Replacement
- $450 to $950
- Thermostat Installation
- $199 to $549
- Gas Valve Replacement
- $350 to $850
Major Repair Band
- Heat Exchanger Repair or Replacement
- $600 to $1,500
- Draft Inducer Motor Replacement
- $500 to $1,100
- Circuit Board Replacement
- $450 to $950
- Duct Sealing and Inspection
- $299 to $899
Full Replacement Band
- Mid-Efficiency Furnace Replacement (80% AFUE)
- $3,500 to $5,500
- High-Efficiency Furnace Replacement (95%+ AFUE)
- $5,500 to $8,500
- Boiler Replacement
- $6,500 to $12,500
- Cold-Climate Heat Pump Installation
- $6,500 to $14,500
- Full Ductless Split System
- $4,500 to $9,500
Try Our Free Tools
Furnace & Heat Pump Sizing Calculator (BTU)
Estimate the heating capacity a room or addition needs, so you can size a furnace zone, a cold-climate heat pump, or a supplemental heater correctly before you call for a quote.
Furnace & Heating Service Finder
Answer five quick questions to find the right furnace or heating service for your situation.
Not sure whether to repair or replace?
Every diagnostic includes a written repair-vs-replace recommendation with the CAD numbers behind it. No pressure, no guessing.
What Separates a Real Furnace Diagnostic From a Parts Swap
Toronto's housing stock runs the full range: Victorian semis with cast-iron radiators and hydronic loops, postwar bungalows on mid-efficiency furnaces installed in the 1990s, and infill and suburban builds with 95% AFUE condensing units. A technician who only knows one of those profiles will guess on the other two. Over 20+ years we have worked all of them across the GTA, which is why the diagnostic starts with combustion analysis and a CO reading rather than a parts catalogue.
The most expensive mistake in this trade is replacing a component that was never the cause. A furnace that short-cycles every three minutes might have a dirty flame sensor, a failing pressure switch, a blocked condensate trap, or a unit that was oversized when it was installed. Each has a different fix and a different CAD cost. The written diagnostic names which one it is, backed by the readings, before you approve anything.
The second most expensive mistake is repairing a furnace that should be replaced. Gas furnaces last 15 to 25 years. Past 20 years, with a cracked heat exchanger or repeat failures, the efficiency gap between an old 80% AFUE unit and a modern 95% AFUE unit pays back in 6 to 10 years, before Enbridge Home Efficiency Rebate Plus and Canada Greener Homes Grant offsets. That is why every diagnostic carries a written repair-vs-replace recommendation with the numbers behind it.
Manufacturer certified across the brands above. Ontario distributor parts keep your manufacturer warranty valid.
What Toronto and GTA Homeowners Say
“Furnace quit on the first cold snap and they had a TSSA-licensed tech at my door the same afternoon. The after-hours diagnostic was quoted upfront and waived once I approved the ignitor repair.”
“My 19-year-old furnace cracked its heat exchanger. I got a written repair-vs-replace breakdown with real CAD numbers, chose the 95% AFUE replacement, and they filed the Enbridge rebate paperwork for me.”
“Booked a 12-point tune-up before winter. The combustion analysis and CO reading were shown to me and I got a documented record for my home insurance. No upsell, just the $149 tune-up.”
10 GTA Cities Covered With Same-Day Dispatch
Dispatch coordinates from the Toronto core out through York and Peel Region. Cold-snap no-heat calls are prioritised inside a 4-hour window in Toronto, North York, Scarborough, Etobicoke, and Vaughan.
Cities We Serve
Neighbourhoods and Postal Zones
Furnace Repair Questions Toronto Homeowners Ask
How much does furnace repair cost in Toronto?
What is the diagnostic fee for a furnace repair call?
How long does emergency furnace repair take?
Do I need a TSSA-licensed technician for furnace work in Ontario?
How old should a furnace be before I replace it?
What Ontario rebates apply to a high-efficiency furnace?
80% AFUE vs 95% AFUE, what is the difference?
How often should a Toronto furnace be tuned up?
Can you repair a rental furnace from Reliance, Enercare, or Simply Green?
What areas do you serve around Toronto?
How do I know if my furnace has a cracked heat exchanger?
Can a cold-climate heat pump replace my gas furnace?
Still have a question about your furnace?
Tell us the symptom, the furnace age, and your postal code. We will tell you what it likely is and what the CAD range looks like before anyone is dispatched.
Get a TSSA-Licensed Diagnostic Booked Today
Tell us the symptom and the furnace age. You get the fault in writing, the CAD cost before work starts, and a clear repair-vs-replace recommendation you can act on.
- Diagnostic waived on same-visit repair
- TSSA G1 and G2 licensed technicians
- Published CAD pricing, no quote gating