24/7 emergency response
Furnace Repair in Toronto — Same-Day Service, 24/7
When your furnace quits in the middle of a Toronto winter, we get your heat back on fast. Ontario Air Services dispatches TSSA-licensed technicians across Toronto, North York, Scarborough, Etobicoke and the wider GTA — including Vaughan, Markham, Mississauga and Brampton — for emergency furnace repair, day or night.
Why Toronto homeowners trust us
Fast, fair, and licensed for every Toronto address
Same-day in Toronto
Most calls reached and diagnosed the same day.
TSSA-licensed
Insured gas-fitter technicians on every call.
All brands & models
Gas, electric, high-efficiency and heat pump.
Upfront pricing
Quote first, work second — never the other way.
Call us if you notice
Toronto winters don't forgive a slow response
If your furnace is doing any of these, book a service call before the next cold front hits.
- Furnace short-cycles or won't ignite
- Cold spots and inconsistent heat between floors
- Loud bangs, squeals or rattles at startup
- Burning or musty smells from the vents
- Sudden spike in your Enbridge gas bill
- Yellow burner flame instead of steady blue
- Pilot light keeps going out
- Carbon monoxide alarm chirping
- Furnace runs constantly but house feels cold
What's included
A complete Toronto furnace repair visit
Every Toronto repair call starts with a real diagnosis — not a guess. We pull a combustion analysis, check safeties, and inspect the heat exchanger before quoting parts. You always approve the price before any work begins.
- Full system diagnostic with combustion analysis
- Igniter, flame sensor, blower motor, capacitor and circuit board replacements
- Gas valve, pressure switch and limit switch repair
- Inducer motor and draft pressure troubleshooting
- Thermostat replacement and Wi-Fi setup
- Safety inspection and CO check before we leave
Past time for a replacement?
Switch to a high-efficiency heat pump
If your Toronto furnace is over 15 years old or the repair bill is high, we'll show you the math on a high-efficiency replacement — including heat pump installation in Toronto and the available heat pump rebates Ontario homeowners can claim.
Compare with installationToronto-wide service
Furnace repair anywhere in the GTA
We respond to furnace emergency calls across every Toronto neighbourhood — from the Annex and Leaside to Scarborough, Etobicoke and North York — and route the closest available technician so we can be at your door fast. Our trucks stock the most common Toronto-area parts, which means many repairs are completed in the same visit instead of dragging into a second appointment.
Beyond the city we cover the rest of the GTA: Vaughan, Markham, Richmond Hill, Aurora, Newmarket, Mississauga, Brampton, Oakville and Burlington. Need other heating services? Browse our full furnace repair details, look at furnace maintenance plans, or jump to AC repair in Toronto when summer rolls around.
FAQ
Furnace repair in Toronto — common questions
How fast can you respond to a furnace emergency in Toronto?
We dispatch 24/7 across Toronto and the GTA. Most emergency calls inside Toronto reach you within a few hours, and we keep priority slots open during cold snaps so families aren't left without heat overnight.
How much does furnace repair cost in Toronto?
Most Toronto furnace repairs land between $180 and $650 depending on the part. We always provide an upfront quote before starting any work, and the diagnostic fee is rolled into the repair if you proceed.
Do you repair all furnace brands?
Yes. Our Toronto technicians service every major brand sold in Ontario — Lennox, Carrier, Trane, Goodman, Rheem, York, Amana, American Standard, Napoleon, Keeprite and more — across gas, electric and high-efficiency models.
Is it worth repairing my old furnace or should I replace it?
If your furnace is over 15 years old, has had multiple recent repairs, or the repair quote is more than half the cost of a new system, replacement usually makes more sense. We'll show you both numbers honestly, including any Toronto-area rebates that apply to a replacement or to a heat pump.
What areas of Toronto and the GTA do you serve?
We provide furnace repair throughout Toronto — including North York, Scarborough, Etobicoke, East York and downtown — and across the Greater Toronto Area in Vaughan, Markham, Richmond Hill, Mississauga, Brampton, Oakville and Burlington.
Do you offer maintenance plans?
Yes. An annual furnace tune-up keeps your warranty valid, catches small issues before they become emergencies, and typically pays for itself in lower gas bills. Ask us about our Toronto maintenance plan when we visit.
Book a service call
Request furnace repair in Toronto
For after-hours emergencies, calling is fastest. Otherwise drop your details below and we'll be in touch within the business day.
Service Areas
Ontario Air Services provides furnace repair across Toronto and the GTA, including Vaughan, Markham, Richmond Hill, North York, Scarborough, Etobicoke, Mississauga, Brampton, Newmarket, Aurora, Oakville, and Burlington. No matter where you are located, our experienced technicians are ready to help.
- Toronto
- Vaughan
- Markham
- Richmond Hill
- North York
- Scarborough
- Etobicoke
- Mississauga
- Brampton
- Newmarket
- Aurora
- Oakville
- Burlington