Lennox Furnace Repair Toronto
Lennox Premier Dealer servicing all Lennox residential furnaces across Toronto. Same-day dispatch from Etobicoke to Scarborough, $0 overtime, genuine Lennox OEM parts. We are Lennox-certified and submit warranty claims directly on your behalf.
Common Lennox issues we fix in Toronto
Lennox SLP98V Signature Collection faults
The flagship SLP98V modulating furnace shows error codes 11, 12, or 41 most commonly. Typical causes are flame sensor fouling, blocked intake, or the rare control board reset. We carry SLP98V parts on every truck.
iComfort thermostat communication errors
Lennox iComfort and S30 smart thermostats can lose communication with the furnace control board. We re-establish the RSBus connection and replace failed cables or boards as needed.
ECM blower module failure
Common on SLP98V, EL296, and SL280NV models around year 10 to 14. Replacement ECM module runs $620 to $920 installed including programming.
Heat exchanger inspection (HX recall awareness)
We perform a scoped heat exchanger inspection on every Lennox furnace older than 8 years. Lennox has issued historical recalls on certain heat exchanger generations, and we check serial numbers against current bulletins.
Pressure switch failure on SL280
Pressure switch failure shows as error 4 on the Lennox SL280NV series. Replacement pressure switch runs $245 to $345 installed.
Hot surface ignitor failure
Universal across Lennox furnace lines, typical lifespan 6 to 10 years. Lennox OEM hot surface ignitor replacement runs $245 to $345 installed.
Lennox models we service in Toronto
We service all Lennox residential models, including pre-2000 legacy units, current production lines, and the latest A2L refrigerant equipment. Parts availability for current models is typically same-day or next-day from local Toronto distributors.
Typical Lennox pricing in Toronto
| Service | Typical range |
|---|---|
| Diagnostic visit | $129 |
| Hot surface ignitor (Lennox OEM) | $245 to $345 |
| Flame sensor cleaning or replacement | $165 to $245 |
| Pressure switch (Lennox OEM) | $245 to $345 |
| Inducer motor (Lennox OEM) | $520 to $820 |
| ECM blower module | $620 to $920 |
| Control board (Lennox OEM) | $485 to $785 |
| Modulating gas valve | $585 to $885 |
| Heat exchanger replacement | $1,900 to $3,200 |
| Same-day emergency dispatch | $0 overtime |
Pricing reflects 2026 Toronto market rates for Lennox parts and EcoFrost labour. We provide a flat-rate written quote before any work begins. No hourly billing, no surprise add-ons.
Lennox service across Toronto
We service Lennox furnaces across every Toronto neighbourhood: Etobicoke, North York, Scarborough, the downtown core, Beaches, Leslieville, Rosedale, Lawrence Park, Forest Hill, Annex, Junction, High Park, and East York. Most Toronto addresses see same-day dispatch with no overtime fees. We handle Lennox warranty work in-house since we are a Lennox Premier Dealer.
For the full Toronto service area with all brands and services, see our main Toronto page.
Why Toronto homeowners choose EcoFrost for Lennox service
TSSA-certified
Licensed gas fitters with manufacturer training across Lennox product lines. Annual recertification.
Same-day dispatch
Most Toronto Lennox calls reached same-day. $0 overtime fees, 24/7 emergency.
Genuine OEM parts
We use genuine Lennox replacement parts on every repair to preserve manufacturer warranty.
Lennox not working? We dispatch today.
TSSA-certified, $0 overtime, same-day across Toronto.
Call (416) 835-4775Frequently Asked Questions
Got questions about HVAC services in the GTA? We've got answers.
Yes. EcoFrost is a Lennox Premier Dealer authorized to install, service, and submit warranty claims directly on all Lennox residential equipment. Our technicians complete annual Lennox certification training. Warranty parts are sourced directly from Lennox and arrive typically same-day from the Toronto distribution centre.
Most Lennox furnace repairs in Toronto run $250 to $920 in parts and labour combined. Common repairs (ignitor, flame sensor, capacitor) run $200 to $400. Major repairs (inducer, ECM module, control board) run $620 to $920. Flat-rate quote provided before any work.
Yes. The Lennox SLP98V Signature Collection modulating furnace is one of our most-serviced models across Toronto. We are trained on the full diagnostic procedure including iComfort thermostat communication, modulating gas valve calibration, and ECM blower programming.
Most Toronto addresses see arrival within 60 to 120 minutes during heating season, depending on location and traffic. Etobicoke and North York are fastest at 30 to 60 minutes. Scarborough and downtown Toronto typically run 60 to 90 minutes. We dispatch 24/7 with no overtime surcharge.
Yes. EcoFrost is a Lennox Premier Dealer authorized for warranty service. All repairs are documented and submitted to Lennox directly when warranty applies. Using a non-authorized contractor can complicate warranty claims, which is why dealer status matters for ongoing service.
Lennox high-efficiency furnaces typically last 18 to 25 years in Toronto with annual maintenance. Mid-efficiency Merit-series units typically last 15 to 22 years. Annual tune-ups extend equipment life significantly and preserve extended warranty coverage.
Still have questions? We are here to help.