24/7 emergency dispatch
Emergency HVAC Repair in Toronto — 24/7 Same-Day Response
No heat in the middle of a Toronto winter? AC out during a heat wave? Gas smell or water leaking from your furnace? Ontario Air Services answers the phone day or night and dispatches a TSSA + ESA-licensed technician to your door — usually within hours, anywhere in Toronto and the GTA.
Smell gas? Leave the house and call 911 first, then call us.
Why Toronto homeowners call us first
Always answered. Always licensed. Always upfront.
Real 24/7
A real person answers, day or night.
TSSA + ESA licensed
Insured for gas and electrical work.
Stocked trucks
Most emergency repairs done in one visit.
Quote before work
No surprise after-hours bills.
Common emergencies we respond to
If any of this is happening, call us right now
No heat in winter
Furnace won't ignite, blowing cold air, or short-cycling during a cold snap.
AC failure in a heat wave
Central AC, ductless or heat pump cooling stopped working when you need it most.
Gas smell or CO alarm
Leave the house, call 911 first, then call us so we can dispatch a gas-licensed tech.
Water leaking from HVAC
Furnace, AC, heat pump or boiler leaking onto floors or into ductwork.
Electrical smell or breaker tripping
Burning smell from your HVAC equipment, or the breaker repeatedly trips.
Heat pump frozen or shut down
Outdoor unit iced over and not defrosting, or system locked out in cold weather.
Response times
How fast we get to you across Toronto and the GTA
Typical emergency response windows. Actual times vary with traffic, weather and call volume — we'll give you a realistic ETA on the phone.
Downtown Toronto
~1 hour
Annex, Cabbagetown, Liberty Village, the Beaches, Leslieville.
Greater Toronto
~2 hours
North York, Scarborough, Etobicoke, East York and inner suburbs.
Wider GTA
~3 hours
Vaughan, Markham, Richmond Hill, Mississauga, Brampton, Oakville, Burlington.
While you wait
Quick safety steps before we arrive
A few minutes of the right action can prevent serious damage — or a serious safety issue.
Smell gas?
Leave the house immediately. Don't switch lights on or off. Call 911 from outside, then call us — we'll have a TSSA-licensed gas fitter on the way.
CO alarm sounding?
Get everyone (people and pets) outside, open windows on the way out, and call 911. Don't re-enter until first responders clear the home.
No heat below freezing?
Run kitchen and bathroom taps at a trickle to keep pipes from freezing. Gather in one room with blankets and close interior doors to retain heat.
Water leaking from your HVAC?
If safe, shut the unit off at the breaker. Place a bucket or towels under the leak and clear the area to prevent floor damage.
AC out during a heat warning?
Close blinds, run ceiling fans, hydrate, and check on elderly neighbours. Toronto Public Health publishes cooling-centre locations during heat advisories.
Pricing — upfront
No surprise emergency invoices
We quote the dispatch fee and the diagnostic charge on the phone before we leave the shop. Once our technician identifies the problem, you get a written repair quote — and you decide whether to go ahead. The diagnostic charge rolls into the repair if you proceed.
- Phone-quoted after-hours dispatch fee
- Flat diagnostic charge — credited to the repair
- Written quote before any parts are installed
- Common parts stocked on the truck for one-visit repairs
- Workmanship guarantee on every emergency repair
After we fix the emergency
Stop the next one before it starts
Most HVAC emergencies are preventable. Once your system is back up, ask us about an annual maintenance plan — or, if your equipment is past its prime, we'll show you the math on a high-efficiency replacement plus the available Ontario heat pump rebates.
- • Furnace repair in Toronto
- • AC repair in Toronto
- • Heat pump installation in Toronto
- • Furnace maintenance plans
FAQ
Emergency HVAC in Toronto — common questions
How quickly can you respond to an emergency HVAC call in Toronto?
For true emergencies — no heat in winter, no cooling during a heat wave, gas smell, water leak from your HVAC system — we dispatch the closest available technician immediately. Most downtown Toronto calls are reached within about an hour, North York / Scarborough / Etobicoke within ~2 hours, and the wider GTA within ~3 hours.
Do you charge extra for after-hours emergency HVAC service?
Yes — there's a modest after-hours dispatch premium for evenings, weekends and holidays. We always quote it on the phone before we roll a truck so there are no surprises, and it's much less than the cost of a frozen pipe or a hotel for the night.
What counts as an HVAC emergency?
Anything that risks safety, property damage or extended exposure to extreme temperatures. The big ones: gas smell, carbon monoxide alarm, no heat below 10°C outdoor temps, no cooling during a heat advisory, refrigerant leaks, water leaking from a furnace or AC, and electrical smells from any HVAC equipment.
What should I do while I wait for the technician?
If you smell gas: leave the house immediately, call 911 from outside, then call us. If your CO alarm sounds: open windows, get everyone out, call 911. For no heat in deep cold, run kitchen taps at a trickle to prevent pipe freezing and gather in one room with extra layers. For water leaks, shut the unit off at the breaker if safe to do so.
Can you handle gas line and electrical emergencies too?
Our technicians are TSSA-licensed gas fitters and ESA-licensed for electrical, so we can safely handle the HVAC-related parts of a gas or electrical emergency (faulty gas valve, scorched wiring on a furnace, breaker tripping on AC). For utility-side issues like a gas leak in the meter or service line, you should call Enbridge or 911 first.
Which Toronto and GTA areas do you cover for emergency HVAC?
All of Toronto — downtown, North York, Scarborough, Etobicoke, East York and the suburbs — and across the GTA including Vaughan, Markham, Richmond Hill, Mississauga, Brampton, Oakville and Burlington. Our 24/7 dispatch routes the closest available technician to keep response times short.
Not an emergency?
Send us a message
If it can wait until business hours, drop your details below and we'll be in touch within the business day. For anything urgent, calling is always faster.
Service Areas
Ontario Air Services provides emergency hvac service 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