Serving All of Toronto & the GTA

Furnace Repair & Installation in Toronto

24/7 emergency furnace repair by TSSA-certified technicians. Serving every Toronto neighbourhood and the entire GTA. Family-owned since 1999.

(416) 286-5665 Get a Free Estimate

5.0 Google & HomeStars

TSSA Certified

24/7 Emergency Service

Enbridge Sustain Partner

Toronto Furnace Services

Toronto's Trusted Furnace Repair & Installation Team

When your furnace stops working in a Toronto winter, you need a team that answers the phone and shows up fast. At Megacity Heating & Air Conditioning, we have been providing furnace repair and installation services across Toronto and the Greater Toronto Area since 1999. Our TSSA-certified technicians respond to emergency calls around the clock — day or night, weekdays or holidays — because a furnace failure in January is never something that can wait until Monday.

Toronto's housing stock is incredibly diverse, from century homes in the Annex and Cabbagetown to post-war semis in East York and modern builds in Liberty Village. Each home type presents unique furnace challenges. Older homes may have undersized or deteriorating ductwork that affects furnace performance. Larger homes with multiple floors often struggle with uneven heating. Our technicians have worked on every type of Toronto home and furnace configuration for over 27 years.

For repairs, we stock the most common replacement parts on every service truck — ignitors, flame sensors, pressure switches, blower motors, and control boards for all major brands. This allows us to complete most furnace repairs in a single visit, typically within one to two hours. Repair costs range from $150 to $500 depending on the issue, and we always provide an upfront diagnosis and price before starting any work.

When your furnace is beyond economical repair — typically when it is over 15 years old, has a cracked heat exchanger, or needs repairs costing more than half the price of a new unit — we help Toronto homeowners transition to a modern high-efficiency system. A new 96% AFUE gas furnace costs between $3,500 and $6,500 depending on the model and your home's requirements. As a certified Enbridge Sustain Trusted Partner, we also offer the lease-to-own program — $0 down, predictable monthly payments, maintenance and repairs included.

Our installation process includes a thorough home assessment, proper load calculation, professional removal and disposal of your old furnace, expert installation of the new system, complete safety testing, and thermostat calibration. We walk you through your new furnace operation and leave your home clean. Every installation includes a manufacturer warranty and our own workmanship guarantee.

Quick Facts

Emergency Line

(416) 286-5665

Available 24/7

Repair Cost

$150 – $500 (most repairs)

New Furnace

$3,500 – $6,500 installed

Enbridge Sustain

$0 down lease-to-own available

Hours

Mon – Sun: 7:00 AM – 11:00 PM

Call for Toronto Service

Our Process

What to Expect During a Furnace Repair Visit

When you call Megacity Heating & Air Conditioning for furnace repair in Toronto, here is exactly what happens. First, we ask a few questions over the phone to understand the symptoms — is the furnace not starting at all, blowing cold air, making noises, or short cycling? This helps our technician arrive with the right parts and tools.

Once our TSSA-certified technician arrives at your Toronto home, the diagnostic process typically takes 20 to 30 minutes. We inspect the thermostat settings, check the air filter, examine the ignition system, test the flame sensor, inspect the heat exchanger for cracks, verify gas pressure, and test all safety controls. We use combustion analyzers and multimeters — not guesswork.

After the diagnosis, we explain the problem in plain language and give you an upfront price for the repair before touching anything. You approve the cost or you don't — no pressure, no hidden fees. If the repair makes financial sense, we get to work immediately. If the furnace is better off being replaced, we tell you that honestly and provide a quote for a new installation. Most repairs take one to two hours from diagnosis to completion.

Call and Describe Symptoms

Tell us what your furnace is doing. We dispatch a technician with the right parts for your likely issue.

Full System Diagnostic

Our tech inspects every component — thermostat, ignition, heat exchanger, blower, gas valve, safety controls.

Upfront Price Before Work

We explain the issue and provide a fixed price. You approve before we start. No surprise charges.

Repair and Test

We complete the repair, run the furnace through multiple cycles, verify safe operation, and clean up.

Diagnostics & Repair

Furnace Problems We Fix Every Day in Toronto

Our technicians diagnose and resolve these issues across Toronto homes. Most repairs completed same-day with upfront pricing.

No Heat / Furnace Not Starting

Failed ignitor, faulty gas valve, tripped safety switch, or thermostat misconfiguration. We carry replacement parts for all brands and resolve most no-heat calls within an hour.

Short Cycling

Furnace turns on and off repeatedly without completing a full heating cycle. Typically caused by a dirty flame sensor, clogged filter, or overheating from restricted airflow.

Strange Noises

Banging, rattling, squealing, or humming from your furnace. Loose blower wheel, worn motor bearings, or expanding ductwork are the most common causes. Early repair prevents more expensive damage.

Yellow or Flickering Flame

A furnace flame should be steady blue. Yellow, orange, or flickering flames indicate incomplete combustion and potential carbon monoxide production. This requires immediate professional inspection.

Blowing Cold Air

Your furnace runs but delivers cold air through the vents. Could be a failed heat exchanger, tripped limit switch, pilot light issue, or thermostat set to fan-only mode.

High Gas Bills

If your Enbridge bill spikes without a change in usage, your furnace efficiency is declining. A tune-up may help, but furnaces over 15 years old often benefit more from a high-efficiency replacement.

City-Wide Coverage

Furnace Repair Across All of Toronto

From our base in East York, our technicians reach every Toronto neighbourhood and GTA community quickly. We know your area and the homes in it.

Downtown

Midtown

Scarborough

North York

Etobicoke

East York

The Beaches

Leslieville

High Park

Junction

Yorkville

Markham

Richmond Hill

Vaughan

Mississauga

Brampton

Pickering

Oshawa

Expert Guidance

Repair or Replace? Here's How to Decide

Consider Repair If:

Furnace is under 12 years old
First-time or infrequent breakdown
Repair cost is under $500
No heat exchanger cracks
System still heats evenly

Consider Replacement If:

Furnace is over 15 years old
Frequent repairs (2+ per season)
Repair cost exceeds 50% of new unit price
Cracked heat exchanger (safety risk)
Gas bills climbing despite maintenance

Why Megacity

Why Toronto Homeowners Choose Megacity for Furnace Repair

TSSA-certified technicians — every tech is licensed and background-checked

24/7 emergency service with no extra diagnostic fees for nights or weekends

Upfront pricing on every repair — you approve the cost before we start

Common parts stocked on every truck for same-visit repairs

Authorized Lennox Dealer with access to full warranty support

Enbridge Sustain Trusted Partner — we handle all rebate paperwork

Over 27 years repairing furnaces across Toronto and the GTA

Family-owned and operated — not a franchise call centre

5.0 rating on Google and HomeStars with 250+ verified reviews

Free estimates on new furnace installations with proper load calculations

Furnace Resources for Toronto Homeowners

Furnace Not Working? Troubleshooting Guide How Much Does a Furnace Cost in Toronto? Best Time to Buy a Furnace Enbridge Sustain Program HVAC Maintenance Plans

Enbridge Sustain Partner

Toronto Homeowners — New Furnace, $0 Down with Enbridge Sustain

Lease-to-own a new high-efficiency furnace with $0 down through Enbridge Sustain. Installation, annual maintenance, and all repairs included in one predictable monthly payment.

Learn About Enbridge Sustain

FAQs

Furnace Repair Questions — Toronto

How much does furnace repair cost in Toronto?

Furnace repairs in Toronto typically range from $150 to $500 depending on the issue. Simple repairs like flame sensor cleaning, thermocouple replacement, or ignitor swaps are at the lower end. More involved repairs such as blower motor replacement, control board repair, or inducer motor replacement fall at the higher end. We always diagnose the issue and provide an upfront price before any work begins — no surprises. For a new furnace installation, expect $3,500 to $6,500 depending on the efficiency rating and home size.

Do you provide 24/7 emergency furnace repair in Toronto?

Yes. We offer around-the-clock emergency furnace repair across all of Toronto and the GTA. Whether it is 2 AM on a weeknight or a holiday weekend, call (416) 286-5665 and we will dispatch a TSSA-certified technician to your home. A furnace failure in a Toronto winter is a genuine emergency — pipes can freeze within hours when indoor temperatures drop — and we treat it with the urgency it requires. No extra diagnostic fees for evenings or weekends.

When should I replace my furnace instead of repairing it?

Consider replacement if your furnace is over 15 years old, needs frequent repairs (more than once per season), has a cracked heat exchanger, or if the repair cost exceeds 50% of a new furnace price. Rising gas bills despite normal usage also signal declining efficiency. A new 96% AFUE furnace costs $3,500 to $6,500 installed and can cut your Enbridge bill by 25-35% compared to an older 60-70% efficient unit. The Enbridge Sustain lease-to-own program also lets you get a new furnace with $0 down — maintenance and repairs included.

What areas of Toronto do you serve for furnace repair?

We serve all of Toronto and the Greater Toronto Area. This includes Scarborough, North York, Etobicoke, East York, downtown Toronto, Midtown, the Beaches, High Park, Leslieville, Roncesvalles, Junction, Yorkville, and every neighbourhood in between. We also serve the wider GTA including Markham, Richmond Hill, Vaughan, Brampton, Mississauga, Pickering, Ajax, Whitby, and Oshawa. Our technicians are strategically located to reach you fast.

What does a furnace tune-up include and how often should I get one?

A furnace tune-up includes cleaning the burners and flame sensor, checking the heat exchanger for cracks, testing the ignition system, inspecting the blower motor and belt, verifying gas pressure, testing safety controls, replacing the air filter, and checking thermostat calibration. We recommend annual maintenance in early fall before heating season starts. A tune-up costs $120 to $180 and can catch small problems before they become expensive emergency repairs. Many furnace warranties also require annual professional maintenance to remain valid.

How long does a typical furnace repair take in Toronto?

Most furnace repairs are completed in one to two hours once our technician arrives. Common fixes like ignitor replacement, flame sensor cleaning, or thermostat recalibration take 30 to 60 minutes. More involved repairs like blower motor or control board replacement take one to two hours. We carry the most common parts on every truck, so the majority of repairs are done on the first visit without needing to order parts or schedule a return trip.