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How much does furnace repair cost in Toronto?
Furnace repair in Toronto is published at $150–$250 for a flame sensor cleaning, at $200–$400 for a capacitor, at $500–$900 for a blower motor, and at $1,500–$3,000+ for a heat exchanger. Of five Toronto furnace-repair pages checked in raw HTML, two publish a price list and three publish no number at all.
Your furnace does not fail in October when you have time to shop around. It fails on the coldest night of a Toronto January, and the first company that answers the phone knows it. That is why three of the five Toronto furnace pages I opened will not print a number: the quote is worth more to them when you have no idea what the number should be.
Why do most Toronto furnace companies not publish a repair price?
Two of the five Toronto furnace-repair pages I opened publish a price. Three publish none.
The two that do agree on the everyday range and then part company at the top. One publishes a single line — "$150 to $600, depending on the issue, part required, and labour time". The other publishes eleven rows, and its eleventh row is $1,500–$3,000+ for a heat exchanger. Both are honest. A heat exchanger is not "the issue, the part and the labour time"; it is a different repair entirely, and it is five times the top of the other company's range.
The three that publish nothing are the ones to be careful with. A furnace fails in Toronto in January, at night, with the house at 11°C — which is the single worst moment in the year to discover what a company charges. A price you only learn once the technician is in your basement is not a price. It is a negotiating position, and you are on the losing side of it.
Toronto furnace repair, fault by fault
One Toronto HVAC company publishes what a furnace repair actually costs, fault by fault, and it is the only Toronto furnace-repair page I opened that does — so here is its list in full rather than an average blended out of publishers who disagree.
| Fault | Published cost (CAD) | Unit basis | Scope |
|---|---|---|---|
| Flame sensor cleaning | $150–$250 | whole job, installed | Residential gas furnace, Toronto |
| Thermocouple / pilot light repair | $150–$350 | whole job, installed | Residential gas furnace, Toronto |
| Thermostat replacement | $150–$300 | whole job, installed | Residential gas furnace, Toronto |
| Capacitor replacement | $200–$400 | whole job, installed | Residential gas furnace, Toronto |
| Pressure switch replacement | $200–$450 | whole job, installed | Residential gas furnace, Toronto |
| Ignition module replacement | $300–$600 | whole job, installed | Residential gas furnace, Toronto |
| Gas valve replacement | $400–$700 | whole job, installed | Residential gas furnace, Toronto |
| Draft inducer motor replacement | $400–$800 | whole job, installed | Residential gas furnace, Toronto |
| Blower motor replacement | $500–$900 | whole job, installed | Residential gas furnace, Toronto |
| Circuit board replacement | $500–$900 | whole job, installed | Residential gas furnace, Toronto |
| Heat exchanger replacement (safety repair) | $1,500–$3,000+ | whole job, installed | Residential gas furnace, Toronto |
HVAC Contractors in Toronto ready to quote you
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Heating, Cooling & HVAC costs and hiring advice
FAQ
How much does furnace repair cost in Toronto?
Furnace repair in Toronto is published at $150–$250 for a flame sensor cleaning, at $200–$400 for a capacitor, at $500–$900 for a blower motor, and at $1,500–$3,000+ for a heat exchanger. A second Toronto company publishes a single range of $150 to $600 for common repairs. Neither figure includes a diagnostic fee, because neither company publishes one.
What is the $5,000 rule for repairing a furnace?
The $5,000 rule multiplies the age of your furnace by the quoted repair cost. Over 5,000, replace it; under 5,000, repair it. A 12-year-old Toronto furnace with a $600 repair scores 7,200, which points to replacement. It is a rule of thumb, not a standard, and no Toronto company I checked publishes it as policy.
What is the most expensive thing to fix on a furnace in Toronto?
The heat exchanger is the most expensive furnace repair published by a Toronto HVAC company, at $1,500–$3,000+ installed. A cracked heat exchanger is also a combustion-safety fault, not a comfort fault. At that price, on a furnace over 15 years old, the repair quote and a replacement quote should be compared side by side before either is signed.
Why do most Toronto furnace companies not publish a repair price?
Of five Toronto furnace-repair pages checked in raw HTML, three publish no dollar figure anywhere on the page, including in their structured data. A furnace fails in Toronto in January, at night, and a homeowner without a published range has no way to judge the first quote they hear. Ask for the range before the visit is booked.
How do I get a written furnace repair quote in Toronto?
Describe the fault, the furnace age and the postcode, then ask three Toronto HVAC companies for the repair price in writing before anyone attends. TaskRight sends one Toronto furnace job to verified local contractors and the quotes come back to you in writing. There is no charge to you and no obligation to accept any of them.
Get three Toronto furnace quotes before you agree to anything
Tell us the fault once. Get it priced by verified Toronto HVAC contractors — in writing, before anyone touches the furnace. No call centre, no "we'll take a look and let you know." You keep every quote, you compare them side by side, and you owe nothing whether you hire someone or not. The contractors pay us a flat subscription, so nobody on this list is quoting you a commission back to us. There isn't one.
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Last updated: August 2026
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