# Furnace Repair Toronto | Best Furnace Repair Toronto

URL: https://bestfurnacerepairtoronto.ca/service-areas/toronto/

![](/images/misc/two-furnace-technicians-in-branded-uniforms-carryi.webp)

Serving Toronto and surrounding areas

# Furnace Repair Toronto: Emergency, Gas Furnace, Replacement and Boiler Service Across Old Toronto

Last updated: September 16, 2026

Furnace repair in Toronto covers the M4, M5, and M6 postal zones, where Victorian and Edwardian masonry homes, postwar bungalows, and infill builds sit on a housing stock with an older-than-average furnace age. Best Furnace Repair Toronto dispatches TSSA G1 and G2 licensed technicians the same day, with cold-snap no-heat calls prioritised inside a 4-hour window across Old Toronto, Leaside, The Beaches, High Park, The Annex, Riverdale, and Cabbagetown. Diagnostic starts at $99 CAD and is waived when you authorise the repair on the same visit.

Call Now: (416) 555-0100

[tel:+14165550100 →](tel:+14165550100)

 

Send a Message

[/contact/ →](/contact/)

20+

Years Serving the GTA

3

Postal Zones Covered

$99

Diagnostic, Waived on Repair

## Toronto Coverage

-   Same-day, 4-hour cold-snap window
-   Postal zones: M4, M5, M6
-   Old Toronto, Leaside, The Beaches, High Park
-   TSSA G1 and G2 licensed technicians only

**20+ Years** GTA Furnace Experience

**5-Star** Customer Satisfaction

**4-Hour** Emergency Response

**TSSA Licensed** G1 and G2 Certified

The Honest Conversation

## What Actually Stops 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.

What We Handle in Toronto

## Furnace and Heating Services in Toronto

Every service below is available across Old Toronto, Leaside, The Beaches and the wider Toronto area, handled by TSSA G1 and G2 licensed technicians.

 

![TSSA-licensed technician arriving at a Toronto home at night for an emergency no-heat furnace call](/images/misc/furnace-technician-in-a-branded-winter-jacket-carr.webp) 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.

$199 - $299 CAD

[Emergency Furnace Repair Toronto →](/emergency-furnace-repair-toronto/)

 

![Technician testing a gas furnace flame sensor with a microamp meter in a Toronto basement](/images/misc/tssa-licensed-technician-testing-a-gas-furnace-fla.webp) 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.

$99 - $950 CAD

[Gas Furnace Repair and Diagnostic Toronto →](/gas-furnace-repair-toronto/)

 

![Technicians installing a new high-efficiency gas furnace in a Toronto basement](/images/misc/two-technicians-lowering-a-new-high-efficiency-gas.webp) 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.

$3,500 - $8,500 CAD

[Furnace Replacement Toronto →](/furnace-replacement-toronto/)

![Technicians positioning and levelling a new gas furnace during installation in a Toronto basement](/images/misc/technicians-setting-a-new-gas-furnace-onto-a-level.webp)

### Furnace Installation Toronto

Right-sized installs with ECM blower and staging options, venting, and Ontario Building Code compliance.

$3,500 - $8,500 CAD

[Furnace Installation Toronto →](/furnace-installation-toronto/)

![High-efficiency 95% AFUE condensing furnace installed with PVC venting in a Toronto basement](/images/misc/newly-installed-95-percent-afue-condensing-furnace.webp)

### High-Efficiency Furnace Conversion Toronto

95% AFUE conversions with rebate coordination, condensing venting, and 15 to 20 percent gas savings.

$5,500 - $8,500 CAD

[High-Efficiency Furnace Conversion Toronto →](/high-efficiency-furnace-toronto/)

![Technician performing a 12-point furnace tune-up with a combustion analyzer in a Toronto basement](/images/misc/technician-running-a-12-point-furnace-tune-up-with.webp)

### Furnace Tune-Up Toronto

12-point annual inspection with combustion analysis, CO monitor, and thermostat calibration, $149 to $249 CAD.

$149 - $249 CAD

[Furnace Tune-Up Toronto →](/furnace-tune-up-toronto/)

![Technician handing over a signed annual furnace maintenance record in a Toronto mechanical room](/images/misc/technician-handing-a-signed-annual-furnace-mainten.webp)

### Annual Furnace Maintenance Toronto

Recurring maintenance with documented records for insurance, warranty, and RentSafeTO landlord certification.

$149 - $249 CAD

[Annual Furnace Maintenance Toronto →](/annual-furnace-maintenance-toronto/)

 

![Technician checking pressure and circulator pump on a cast-iron boiler in an older Toronto basement](/images/misc/technician-checking-the-pressure-gauge-and-circula.webp) Radiant Specialists

### Boiler Repair and Radiant Heating Toronto

Cast-iron and combi-boiler diagnostics, hydronic system balancing, common in older Toronto and Vaughan homes.

$500 - $12,500 CAD

[Boiler Repair and Radiant Heating Toronto →](/boiler-repair-toronto/)

See All Furnace Services

[/emergency-furnace-repair-toronto/ →](/emergency-furnace-repair-toronto/)

Commonly needed in Toronto: 

Boiler Repair and Radiant Heating Toronto

[/boiler-repair-toronto/ →](/boiler-repair-toronto/)

 , 

High-Efficiency Furnace Conversion Toronto

[/high-efficiency-furnace-toronto/ →](/high-efficiency-furnace-toronto/)

From Call to Verified Repair

## How Our Toronto Furnace Diagnostic Process Works

Every furnace call follows the same documented process, from booking through post-repair combustion verification.

01

### Booking and Dispatch

Send your postal code, furnace age, and symptom. Same-day or next-morning slot booked. Diagnostic fee quoted upfront in CAD.

02

### 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.

03

### 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.

04

### 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.

05

### Post-Service Verification and Warranty

Combustion analysis re-run, CO reading verified, thermostat cycle tested, and the parts and labour warranty issued in writing.

## No heat in Toronto?

Same-day, 4-hour cold-snap window. Call and we will tell you the likely fault and the CAD range before a technician is dispatched.

(416) 555-0100

[tel:+14165550100 →](tel:+14165550100)

 

Send a Message

[/contact/ →](/contact/)

Local Advantage

## Why Toronto Homeowners Call Us First

01

### 20+ Years of Furnace Repair Experience across the Toronto core and the wider GTA

02

### Same-day dispatch with cold-snap no-heat calls prioritised inside a 4-hour window

03

### TSSA G1 and G2 licensed technicians only, certificate numbers on every invoice

04

### Heritage and narrow-clearance mechanical room experience in The Annex, Cabbagetown, and Riverdale

05

### Cast-iron radiator and hydronic boiler service for older Old Toronto homes

06

### Four published CAD scope bands, diagnostic waived on same-visit repair

## How We Dispatch Across the Toronto Core

Toronto core routing runs off the Gardiner, the DVP, and the Allen, with surface routing down Bloor, Dundas, and Queen when the expressways seize up during a cold-snap evening. On a no-heat call in M4, M5, or M6 we target a 4-hour arrival window, and in practice the shortest waits are mid-morning and early afternoon, before the 3 p.m. eastbound crawl.

Downtown and midtown parking is the real constraint, not distance. Our technicians carry permits for metered streets and coordinate laneway or garage access before arrival, so the visit starts with diagnostics instead of a circling van. In Cabbagetown, The Annex, and Riverdale, where driveways are rare and laneways are narrow, we confirm the access route when you book.

Common Toronto parts are carried on the van: hot surface ignitors, flame sensors, run capacitors, pressure switches, limit switches, and thermocouples for older pilot systems. That is what lets a standard fault finish in 60 to 120 minutes on the first visit rather than turning into a parts-order return trip.

## Toronto Housing Stock We Work in Every Week

Old Toronto is a mix of Victorian and Edwardian semis with cast-iron radiators and hydronic loops, postwar bungalows in the east end, and newer infill builds with high-efficiency condensing units. Each one fails differently. Radiator homes bring circulator pump, expansion tank, and aquastat faults. Converted homes bring undersized returns and short-cycling from a furnace that was never right-sized for the envelope.

Heritage properties in The Annex and Cabbagetown often have narrow-clearance mechanical rooms, so a replacement has to be sized on physical clearance and venting path, not just BTU. We measure the route before quoting a 95% AFUE condensing unit, because the System 636 venting run is what decides whether the conversion is a one-day job or a two-day job.

Leaside, The Beaches, and High Park homes commonly still run mid-efficiency 80% AFUE units installed in the late 1990s and 2000s. At 20+ years those are the strongest candidates for a high-efficiency conversion with Enbridge Home Efficiency Rebate Plus and Canada Greener Homes Grant paperwork filed on your behalf.

Local Feedback

## What Toronto Customers Say

> “No heat at 6 a.m. in a 1920s semi. A licensed tech was here before noon, found a cracked hot surface ignitor, and the furnace ignition repair came in at the quoted $340 CAD with the diagnostic waived.”

D Daniel K. Riverdale

> “Our 21-year-old mid-efficiency furnace was done. The replacement quote laid out 80% and 95% AFUE side by side with real numbers, and the high-efficiency install finished in a day with the rebate forms filed for us.”

M Maria S. Leaside

> “Cast-iron radiators and a boiler that kept losing pressure. They traced it to the expansion tank, rebalanced the hydronic loops, and explained every step without a single upsell attempt.”

O Owen B. The Beaches

## Neighbourhoods and Postal Zones We Cover in Toronto

Old Toronto Leaside The Beaches High Park The Annex Riverdale Cabbagetown M4 M5 M6

Near High Park and Casa Loma

High Park Casa Loma Riverdale Farm The Beaches Boardwalk Toronto General Hospital

## Our Toronto Service Area

Get Directions to the Toronto Service Area

[https://www.google.com/maps/dir/?api=1&destination=43.6532,-79.3832 →](https://www.google.com/maps/dir/?api=1&destination=43.6532,-79.3832)

Local Answers

## Furnace Repair in Toronto, Questions Answered

### How fast can you get to a no-heat call in the Toronto core?

Same-day dispatch across M4, M5, and M6, with cold-snap no-heat calls prioritised inside a 4-hour window. Booking before noon gives the best chance of a same-afternoon slot in Old Toronto, Leaside, Riverdale, and The Beaches.

### Which Toronto neighbourhoods do you cover?

Old Toronto, Leaside, The Beaches, High Park, The Annex, Riverdale, and Cabbagetown, plus the surrounding M4, M5, and M6 zones. We also serve North York, Scarborough, and Etobicoke from the same dispatch.

### What does furnace repair cost around here?

Diagnostic runs $99 to $149 CAD in business hours and $199 to $299 CAD after hours, waived on same-visit repair. Standard part repairs are $150 to $950 CAD, heat exchanger work is $600 to $1,500 CAD, and a full 95% AFUE replacement is $5,500 to $8,500 CAD.

### Can you work on a heritage home with a tight mechanical room?

Yes. Narrow-clearance basements in The Annex, Cabbagetown, and Riverdale are routine for us. We measure clearance and the venting path before quoting a replacement so the unit we specify physically fits and vents to Ontario Building Code.

### Do you service cast-iron radiators and boilers in older homes here?

Yes. Boiler repair starts around $500 CAD and covers circulator pumps, expansion tanks, pressure relief valves, and aquastat controls, plus hydronic loop and cast-iron radiator balancing. Full boiler replacement runs $6,500 to $12,500 CAD.

### Is an 18-year-old furnace worth repairing?

Sometimes. With an intact heat exchanger and a single failed part, a repair buys real service life. Past 20 years the 95% AFUE efficiency gap usually justifies replacement. Every diagnostic includes a written repair-vs-replace recommendation with the CAD numbers behind it.

### 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.

Call Now: (416) 555-0100

[tel:+14165550100 →](tel:+14165550100)

 

Send a Message

[/contact/ →](/contact/)

## Furnace Service Near Toronto

North York Same-day, 4-hour cold-snap window

[/service-areas/north-york/ →](/service-areas/north-york/)

 

Scarborough Same-day, 4-hour cold-snap window

[/service-areas/scarborough/ →](/service-areas/scarborough/)

 

Etobicoke Same-day, 4-hour cold-snap window

[/service-areas/etobicoke/ →](/service-areas/etobicoke/)

![](/images/misc/two-furnace-technicians-in-branded-winter-uniforms.webp)

Same-Day Emergency Dispatch, 24/7 Cold Snap Response

## Book a Furnace Technician in Toronto

Same-day, 4-hour cold-snap window across M4, M5, M6. You get the fault in writing, the CAD cost up front, and the diagnostic fee waived when the repair is authorised on the same visit.

Call Now: (416) 555-0100

[tel:+14165550100 →](tel:+14165550100)

 

Send a Message

[/contact/ →](/contact/)

-   Diagnostic waived on same-visit repair
-   TSSA G1 and G2 licensed technicians
-   Published CAD pricing, no quote gating