# Furnace repair and installation in Toronto > Furnace not coming on in Toronto? Jackman Mechanical repairs, installs and maintains gas furnaces. Who may service one, and the yearly inspection rule. - Canonical HTML: https://www.jackmanmechanical.com/residential/furnaces/ - Section: Home > Homes > Furnaces - Business: Jackman Mechanical Ltd., Toronto, ON, Canada (serves Toronto, North York, Mississauga, Markham, Ajax) - Phone: (416) 888-1371 | Text: (289) 639-2754 | Email: jackmanmechanicallimited@gmail.com - Page updated: 2026-10-20 --- For homes Jackman Mechanical Ltd. troubleshoots, repairs, installs and maintains gas furnaces in Toronto homes, and in North York, Mississauga, Markham and Ajax: a furnace that will not come on, rooms that stay cold, a blinking light or code, a noisy furnace, or an old one to replace. No heat in cold weather is a call, any hour, at (416) 888-1371. [Call (416) 888-1371](tel:+14168881371) [Text (289) 639-2754](sms:+12896392754) [Request online](https://www.jackmanmechanical.com/request/?problem=no_heat) ## Is a furnace with no heat an emergency? In cold weather, yes. Beyond comfort, a cold house can freeze pipes: the City of Toronto says pipes are most likely to freeze along exterior walls and where the water service enters through the foundation [(City of Toronto)](https://www.toronto.ca/services-payments/water-environment/your-water-pipes-meter/water-related-help-advice/prevent-or-thaw-frozen-pipes/). Call [(416) 888-1371](tel:+14168881371). If you rent, tell your landlord first: Toronto's rule is a minimum of 21°C from October 1 to May 15, in the [rental heat guide](https://www.jackmanmechanical.com/guides/no-heat-rental-toronto/). If a carbon monoxide alarm is sounding, that comes before everything: get everyone out and call 911 from outside, as the [alarm guide](https://www.jackmanmechanical.com/guides/carbon-monoxide-alarms-ontario/) explains. ## What will the request form ask about the furnace? Three questions, all optional, and the most useful photo is the label inside the furnace door. **Questions on the request form for no heat problems** | Question | The choices | | --- | --- | | What heats the home? | Furnace · Boiler (radiators or floor) · Not sure | | How old is it? | Under 5 years · 5 to 10 years · Over 10 years · Not sure | | What is it doing? | Not coming on · Some rooms cold · Blinking light or code · Noisy | **Photos that help.** The most useful are the label inside the furnace or boiler door, and any blinking light or code. ## How is a gas furnace connected? *Illustration of a typical installation, not a drawing of a specific job.* The drawing shows what a furnace call checks: supply air out the top into the ducts, return air back in through the filter, the intake and exhaust pipes, the gas line with its shutoff and drip leg, and the condensate line from a high efficiency furnace. Many furnaces list what their blinking light means on a label inside the door, which is why a photo of the label and the light helps. ## Who can service a furnace in Ontario? The TSSA says that under Ontario law, maintenance of furnaces and fuel-fired appliances must be performed by TSSA-registered contractors, who must hire TSSA-certified gas technicians [(TSSA)](https://www.tssa.org/repeat-offender-convicted-unlicensed-gas-appliance-work-ontario-homes). The Government of Ontario also asks owners to have fuel-burning appliances, chimneys and vents cleaned and inspected by professionals every year [(Government of Ontario)](https://www.ontario.ca/page/carbon-monoxide-safety). ## Does a furnace replacement need a permit in Toronto? Yes. Toronto Building lists a furnace or boiler replacement in a single-family house as a stand-alone HVAC permit at $214.79 flat in 2026 [(City of Toronto)](https://www.toronto.ca/services-payments/building-construction/building-permit/before-you-apply-for-a-building-permit/building-permit-application-guides/standalone-plumbing-mechanical-and-drains/standalone-plumbing-and-drain-permits/). The other fees are in the [permits guide](https://www.jackmanmechanical.com/guides/plumbing-heating-permits-toronto/). Jackman Mechanical's typical prices for the work itself are in the answers below. ## What do people ask about their furnace? The questions Jackman Mechanical hears most, in its own answers. The prices are typical ranges, not a quote; each job is priced directly with you. ### Why is my furnace not turning on? The disconnect switch may be turned off, or the control board may be faulty. The disconnect switch usually looks like a light switch on or near the furnace, so check that one first. If it is on and the furnace still will not start, call, or send a request with a photo of the label inside the furnace door. ### Why is my furnace blowing cold air? It may be a problem with the gas valve or the flame rod, the sensor that tells the furnace its burner has lit. Both are work for a certified gas technician. ### How much does furnace repair cost in Toronto? Typically $450 to $1,500, depending on the repair. ### How much does a new furnace cost in Toronto? Typically $4,000 to $7,000 all in. It depends on the size of the furnace your home needs. ### Who offers emergency furnace repair near me? Jackman Mechanical Ltd. does emergency furnace repair in Toronto, North York, Mississauga, Markham and Ajax. Emergency repairs are 24/7 by phone at [(416) 888-1371](tel:+14168881371). ### Why does my furnace keep turning on and off? That is called short cycling. The furnace detects a failure, shuts itself off, and tries to start another cycle. A technician finds the failure it keeps detecting. ### How often should I have my furnace serviced? Once a year. The Government of Ontario also asks owners to have fuel-burning appliances, chimneys and vents cleaned and inspected by professionals every year [(Government of Ontario)](https://www.ontario.ca/page/carbon-monoxide-safety). ### Should I repair or replace my furnace? It depends on what is wrong with it. Have a technician diagnose the problem before you make that decision. ### Is a heat pump better than a gas furnace for a Toronto home? No, in Jackman Mechanical's view. A heat pump still needs a backup heat source for a Toronto winter, so it does not replace the furnace on its own. The natural gas questions, and all the typical prices in one table, are on the [common questions page](https://www.jackmanmechanical.com/faq/). Published by Jackman Mechanical Ltd., Toronto. Updated October 20, 2026. ## No heat now? Call, any hour. [Call (416) 888-1371](tel:+14168881371) ## Text the label Text the label inside the furnace door, and any blinking light, to (289) 639-2754. [Text (289) 639-2754](sms:+12896392754) --- Jackman Mechanical Ltd.: plumbing, gas and heating for homes and businesses in Toronto, North York, Mississauga, Markham and Ajax. Call (416) 888-1371. Full site: https://www.jackmanmechanical.com/