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Heating · RepairFurnace repair, usually same-day
Most furnace repairs in Burlington, Oakville and Hamilton cost $150–$450 and finish on the first visit; the $90–$150 diagnostic is folded into the repair if you go ahead. A TSSA-licensed technician finds the fault, quotes it in writing, and says plainly whether the furnace is worth fixing.
Furnace repair covers every gas furnace in Halton and Hamilton: 1990s 80% mid-efficiency units in Glen Abbey, Millcroft and Stoney Creek, 2000s builder-grade condensing furnaces in Alton Village and Waterdown, and conversion furnaces still running in Westdale and Roseland brick houses. The failures follow the age: mid-efficiency units lose igniters and inducer motors, condensing units clog condensate traps and trip pressure switches, and anything past 15 years is a heat-exchanger question.
Snow drifts on the Mountain and in Binbrook bury the sidewall intake of a condensing furnace and shut it down on a pressure-switch fault; often clearing the vent is the whole repair (snow-blocked furnace vent). And a mid-efficiency furnace venting into an unlined masonry chimney in Hamilton's lower city condenses in the flue, eats the mortar and drops debris that blocks the draft — a chimney problem that presents as a furnace fault.
The visit starts with the furnace's own evidence: the LED flash code on the control board narrows the fault before the panel comes off. Then the technician tests the suspect part with a meter — microamps on the flame sensor, resistance on the igniter, water column on the pressure switch — instead of swapping parts until it runs. The finding and the exact price come in writing before any part is replaced.
Most furnace repairs in the GTA run $150–$800. Flame sensor cleaning or replacement is $150–$300, a hot surface igniter $200–$450, a capacitor or pressure switch $250–$500, a draft inducer motor $400–$900, and a blower motor $500–$1,500 depending on ECM or PSC. A cracked heat exchanger runs $1,500–$3,000 and usually turns up on furnaces 15+ years old, so that money is better put toward a new furnace.
Call us when
- The furnace runs but the air at the registers is cool — a flame sensor dropping out or a high limit tripping
- It lights, runs a minute or two, shuts down and repeats (short-cycling)
- A new bang at start-up, a squeal from the blower, or a rumble from the inducer
- The thermostat calls for heat and nothing happens, or the board LED flashes a code
- Your carbon monoxide alarm sounds — leave the house first, then call from outside
How it works
Tell us what the furnace is doing and, if you can see it, the LED pattern on the control board. We'll say whether it is safe to keep running and what to check first — batteries, service switch, filter, vent.
The technician tests the suspect part with a meter, then writes the exact repair price before touching a wrench. The diagnostic is folded into that price if you proceed.
Igniters, flame sensors, capacitors, pressure switches and common inducer motors ride on the truck, so most repairs finish the visit they start. If a part must be ordered, you get the date and a plan to stay warm — or request a callback.
Brands: We repair all major furnace brands: Lennox, Carrier, Trane, Goodman, Rheem, Daikin, York, Amana, KeepRite, Napoleon and more.
Common questions
Can I get same-day furnace repair?
Winter no-heat calls are booked ahead of everything else and the 24/7 line is answered by a person. How soon a truck reaches you depends on that day's queue, so you get the real window when you call, not a promise — see same-day furnace repair in the GTA.
Do you charge extra for nights and weekends?
No. The diagnostic is $90–$150 whether it is Tuesday afternoon or 2 AM on a holiday, and there is no overtime, weekend or holiday surcharge on the repair. The repair itself is billed on top at the same rates, commonly $150–$800 depending on the part.
Repair or replace — how do you decide?
Replace when the repair costs more than half of a new unit and the furnace is over 12 years old, or when it is past 15 and needs a heat exchanger, control board or blower. A 96% AFUE furnace burns about a sixth less gas than the 80% units installed across Halton in the 1990s — see the repair-or-replace cost guide.
Is the diagnostic fee applied to the repair?
Yes. The $90–$150 covers the technician's time to find the fault and is folded into the written repair price if you proceed. If you decline — say an 18-year-old furnace needing a $500–$1,200 control board — you pay the diagnostic only and keep the written number to compare quotes.
Do you repair furnaces in older Hamilton and Burlington homes?
Yes. Post-war bungalows in Aldershot and on the Mountain have undersized return ducts, so the furnace starves for air and trips its high limit — the fix is a return, not a part. Pre-war brick in Westdale and Dundas needs the chimney liner checked first. See furnace repair in Burlington.