Toronto · Heating repair
Furnace repair in Toronto
Diagnostics and repair on residential furnaces across Toronto — from a furnace that won’t start on the first cold night to one that short-cycles every fifteen minutes. We service high-efficiency gas furnaces and the older mid-efficiency units still running in plenty of Toronto basements.
What we hear about most often.
Most no-heat calls in Toronto come down to a handful of culprits. We start by hearing what the furnace is doing — or not doing — and pulling the front panel for an honest look before quoting anything.
Whatever the symptom, we reproduce the fault, identify the part or condition causing it, and tell you what it costs to fix versus what it costs to replace.
- Furnace blowing cold air or short cycling
- Ignitor glows but no flame, or flame drops out
- Loud blower, rattling inducer, or noisy start-up
- Furnace runs but house never reaches setpoint
- Repeated lockouts or error codes on the control board
- Pilot or flame-sensor issues on older units
A real diagnosis, not a parts-cannon.
Every furnace repair starts the same way — verify the symptom, check the safeties, then trace from the call for heat through ignition, flame proving, and blower handoff. We don’t guess our way through replacements.
Book a furnace diagnostic- Thermostat call and 24V control circuit
- Hot-surface ignitor / spark module continuity
- Flame sensor microamps and burner condition
- Inducer draft, pressure switch and venting
- Limit switches, rollout, and heat-exchanger inspection
- Blower motor amperage, capacitor and airflow
Repair vs replace
When a Toronto furnace is worth fixing — and when it isn’t.
A repair is usually right when the furnace is under about 12–15 years old, has a sound heat exchanger, and the failed part is bounded. Replacement is usually right when the unit is older, has had multiple recent failures, or when the heat exchanger itself is compromised.
Bounded fault, sound exchanger, reasonable age.
One identifiable failed component, no signs of cracking on the heat exchanger, and a unit that still has years of safe service in it.
Aged unit, repeating failures, or safety issues.
Heat-exchanger compromise, repeated unrelated breakdowns, or a unit old enough that parts and efficiency both argue for a clean swap.
Replacing anyway? Worth a load review.
If you’re already replacing, it’s a good moment to look at a cold-climate heat pump — either as a dual-fuel pairing or a full retrofit.
No heat in winter? Use the after-hours line.
Sub-zero nights don’t wait. Our emergency HVAC rotation runs nights and weekends.
More Toronto services
Other things Toronto homeowners ask us about.
AC repair — Toronto
Cooling diagnostics and repair across Toronto — refrigerant leaks, capacitor faults, frozen coils, and warm-air-coming-out-the-vent calls.
AC installation — Toronto
Right-sized central AC and ductless mini-split installs for Toronto homes — sized to the load, not the brochure.
Heat pump installation — Toronto
Cold-climate air-source heat pump installs designed for Toronto winters — all-electric or paired dual-fuel.
Hot water tank replacement — Toronto
Same-day swap availability for failing tanks across Toronto — gas, electric, and tankless conversions.
Emergency HVAC — Toronto
Nights, weekends and holidays — no-heat, no-AC, water-heater leaks. After-hours dispatch from the on-call rotation.
HVAC maintenance — Toronto
Fall and spring tune-ups for Toronto homes — combustion checks, coil cleans, and the small fixes that prevent the bad calls.
Toronto residential
Furnace acting up? Tell us what it’s doing.
Send a few details about the unit and what you’re hearing. A real co-op member reviews each request and replies with a service window or a same-day call-out for emergencies.
Request service