24/7 emergency response
Furnace Repair in Mississauga — Same-Day Service, 24/7
When your furnace quits in the middle of an Ontario winter, we get your heat back on fast. Ontario Air Services dispatches TSSA-licensed technicians across Mississauga, Port Credit, Streetsville, Erin Mills, Meadowvale and the wider west GTA — including Oakville, Burlington and Brampton — for emergency furnace repair, day or night.
Why Mississauga homeowners trust us
Fast, fair, and licensed for every Mississauga address
Same-day in Mississauga
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
Don't wait through a Mississauga cold snap
If your furnace is doing any of these, book a service call before the next cold front rolls in off the lake.
- 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 Mississauga furnace repair visit
Every Mississauga 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 Mississauga 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 the GTA and the available heat pump rebates Ontario homeowners can claim.
Compare with installationWest GTA service
Furnace repair anywhere in Mississauga and beyond
We respond to furnace emergency calls across every Mississauga neighbourhood — from waterfront homes in Port Credit and Lorne Park, to family streets in Erin Mills, Meadowvale and Streetsville, to high-rises near Square One and Cooksville. Our trucks stock the most common Mississauga-area parts, which means many repairs are completed in the same visit instead of dragging into a second appointment.
Beyond Mississauga we cover the rest of the west GTA: Oakville, Burlington, Brampton and Etobicoke, and we extend across to Toronto for furnace repair in Toronto. Need other heating help? Browse our furnace repair details, look at furnace maintenance plans, or jump to AC repair across the GTA when summer rolls around.
FAQ
Furnace repair in Mississauga — common questions
How fast can you respond to a furnace emergency in Mississauga?
We dispatch 24/7 across Mississauga and the surrounding GTA. Most emergency calls into Mississauga — Port Credit, Streetsville, Erin Mills, Meadowvale, Cooksville and Square One — are reached 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 Mississauga?
Most Mississauga furnace repairs land between $180 and $650 depending on the part. We always provide an upfront written quote before starting any work, and the diagnostic fee is rolled into the repair if you proceed.
Do you repair all furnace brands in Mississauga?
Yes. Our Mississauga 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.
Should I repair my old Mississauga furnace or 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 rebates that apply to a replacement or to a heat pump.
Which Mississauga and west GTA areas do you serve?
We provide furnace repair throughout Mississauga — including Port Credit, Streetsville, Erin Mills, Meadowvale, Cooksville, Mineola, Lorne Park, Clarkson and Square One — and across the wider west GTA in Oakville, Burlington, Brampton and Etobicoke.
Do you offer furnace maintenance plans?
Yes. An annual furnace tune-up keeps your manufacturer warranty valid, catches small issues before they become emergencies, and typically pays for itself in lower gas bills. Ask us about our Mississauga maintenance plan when we visit.
Book a service call
Request furnace repair in Mississauga
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