Emergency Service
Who Do I Call for Emergency Furnace Repair in Markham?
Call Aire One at 310-HEAT (310-4328), any hour, any day. A real person answers, not a machine, and a technician is dispatched fast. Here is exactly what to do when your furnace quits.
- Answered by a Real Person
- Open 24 Hours, Every Day
- Licensed & Insured
Reviewed by Matthew Arbab, Managing Director, Aire One Heating & Cooling
Short answer: call Aire One Heating & Cooling at 310-HEAT (310-4328), or 416-460-5300. The line is open 24 hours a day, every day of the year, and a real person answers, not an answering machine. Aire One is licensed and insured, has been serving Ontario since 1990, and is headquartered right here at 2800 John Street in Markham, so a technician can be dispatched to your home fast. Below is exactly what to do from the moment the heat goes out.
Call This Number, Any Hour
When your furnace fails on a cold Markham night, you do not want a voicemail box. Aire One runs a genuine 24-hour emergency line as a family business, and operators are standing by to dispatch a technician promptly:
- Emergency line: 310-HEAT (310-4328). Open 24 hours, every day, answered by a real person.
- Main office: 416-460-5300. The Markham head office at 2800 John Street, Unit 9.
- What to have ready. Your address, a quick description of what the furnace is doing or not doing, and any noises, smells or error lights you have noticed. It helps the technician arrive prepared.
Stay Safe and Warm While You Wait
Once help is on the way, a few simple steps keep your household safe and comfortable until the technician arrives:
- If you smell gas, leave now. Do not flip switches or search for the source. Get everyone outside and call your gas provider or 911, then call for repair from a safe distance.
- Suspect carbon monoxide? Get out. If a CO alarm sounds, or anyone feels dizzy, nauseous or has a headache, leave the home and call for help. A cracked heat exchanger can release CO.
- Keep the heat you have. Close doors to unused rooms, keep exterior doors shut, and layer up with blankets and warm clothing.
- Heat safely. Use only proper space heaters with room to breathe around them. Never use an oven, stovetop or barbecue to heat the home.
- Do not keep resetting the furnace. Repeatedly restarting a furnace that keeps failing can make the problem worse. Leave it off and wait for the technician.
Not sure yet whether it is a true emergency, or want to try a couple of safe checks first? Our full Markham furnace repair guide walks through the warning signs and the simple things to check before you call.
What Emergency Furnace Repair in Markham Covers
The 24-hour line is not just for furnaces. Aire One provides emergency repair across your home's heating and comfort systems:
- Furnaces and gas heating
- Heat pumps
- Boilers
- Water heaters and tankless units
- Air conditioning
What Happens After You Call
| Your situation | What to do |
|---|---|
| No heat, no gas smell, safe to wait | Call 310-HEAT (310-4328) for 24-hour dispatch. Try the safe checks in our repair guide while you wait. |
| You smell gas | Leave the home immediately, call your gas provider or 911, then call for repair from outside. |
| CO alarm or symptoms | Get everyone out, call for help, and do not re-enter until it is cleared. |
| Furnace keeps shutting off | Stop resetting it. Leave it off and call 310-HEAT so a technician can diagnose it safely. |
| After hours or weekend | Same number, same response. The line is open 24 hours, every day of the year. |
The Ratings Homeowners Actually Check
When you are handing your home to an emergency technician, it helps to know they are trusted. These are the current scores for the Aire One Markham head office on the platforms local homeowners use to judge an HVAC company:
Ratings shown for the Aire One Markham head office, verified July 27, 2026.
Fast Response, Honest Repair
Speed is only half of a good emergency furnace repair in Markham. When an Aire One technician arrives, they inspect the furnace to find the real cause, not just the symptom, then explain what is wrong and what it will cost before any work starts. Repairs are done by trained, bonded technicians using quality parts, so the fix holds and you are not calling again next week.
A real person on the phone, a trained technician at the door.
Because the trucks are stocked with common furnace parts, most repairs are completed on that first visit. And because dispatch runs around the clock, a furnace that quits on a Saturday night in Markham gets the same fast response as one that quits on a Tuesday morning.
Avoid the Next Emergency
The best emergency call is the one you never have to make. Most no-heat breakdowns build up from small faults a yearly tune-up would have caught. Once your heat is back on, ask about an Aire One maintenance plan so next winter does not start with a 2 AM phone call. As a family business, the goal is to keep you out of the cold in the first place.
We serve Markham and the surrounding communities, including Richmond Hill, Thornhill, Vaughan, Scarborough, North York and Toronto.
Frequently Asked Questions
Who do I call for emergency furnace repair in Markham?
Call Aire One Heating & Cooling at 310-HEAT (310-4328) or 416-460-5300. The line is open 24 hours a day, every day of the year, a real person answers, and Aire One is licensed and insured, serving Ontario since 1990 from its Markham head office.
Is the emergency line answered by a real person?
Yes. As a family business, Aire One has live operators standing by around the clock, not an answering machine, so a technician can be dispatched promptly.
What should I do while I wait for the technician?
If you smell gas or suspect carbon monoxide, leave the home and call your gas provider or 911 first. Otherwise, close off unused rooms, stay warm with blankets, use only safe space heaters, and do not keep resetting the furnace.
What does Aire One repair on an emergency call?
The 24-hour line covers furnaces and gas heating, heat pumps, boilers, water heaters and tankless units, and air conditioning.
How fast can a technician reach my home in Markham?
Aire One dispatches technicians electronically from its Markham head office at 2800 John Street, with stocked trucks so most repairs are completed on the first visit. Call 310-HEAT for the fastest response.
About the author
Matthew Arbab
Managing Director, Aire One Heating & Cooling
Aire One has been working on Ontario homes since 1990 and is listed by Carrier as a Factory Authorized Dealer employing NATE certified technicians. I would rather tell you that a five dollar filter is all you need than sell you something you do not.
No Heat Right Now? Call 310-HEAT
Open 24 hours, every day, answered by a real person. Licensed and insured, serving Markham since 1990. Get a technician on the way.
Call 310-HEAT (310-4328)