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Furnace Installation Scarborough — New Gas Furnace by TSSA-Certified Techs | (416) 424-4328
Your Scarborough furnace is done. Maybe it’s 15 years old and cycling on and off. Maybe your Enbridge bill jumped $200 this winter and the house still won’t warm up. Maybe it just stopped at 2 AM in February. Whatever brought you here, you need a new furnace — properly sized, permitted by TSSA, and backed by a real warranty.
Madina Mechanical has installed gas furnaces in Scarborough since 2007. Our TSSA-certified technicians have replaced hundreds of furnaces across Agincourt, Malvern, West Hill, Cliffside, and every neighbourhood in between. Call (416) 424-4328 for a free in-home quote.
How Much Does Furnace Installation Cost in Scarborough? (2026 Pricing)
Furnace installation in Scarborough costs $2,400 to $6,800 fully installed, including removal of your old unit, venting, and TSSA permit.
| Furnace Type | AFUE | Installed Cost (2026) | Best For |
|---|---|---|---|
| Standard Efficiency Gas Furnace | 80% AFUE | $2,400–$3,800 | Older homes; B-vent systems |
| Mid-Efficiency Gas Furnace | 90–92% AFUE | $3,200–$4,800 | Most Scarborough homes built before 2000 |
| High-Efficiency Condensing Furnace | 96–98% AFUE | $4,200–$6,800 | 2000s+ builds; maximum savings |
| Two-Stage / Variable-Speed | 96–98% AFUE | $4,800–$7,500 | Maximum comfort; quieter operation |
Prices include: unit supply, labour, old furnace removal and disposal, venting, gas line, thermostat wiring, TSSA permit and inspection. HST extra.
Signs Your Scarborough Furnace Needs Replacing — Not Just Repairing
The rule: if repair cost exceeds 50% of replacement cost AND the unit is over 12 years old, replace it. These are the clear signals:
- Furnace is 15+ years old. Gas furnaces last 15–20 years. After 15 years, heat exchanger failure risk climbs significantly.
- Enbridge bill keeps climbing. A 65% AFUE furnace vs a new 96% AFUE unit means spending $310 extra per $1,000 of heating — roughly $550–$650 per Scarborough winter in pure waste.
- Short cycling — on and off every 2–5 minutes. Usually signals an overheating heat exchanger, which may be cracked — a carbon monoxide hazard.
- Uneven heat. Some rooms freezing, others warm — failing blower or undersized unit.
- Yellow or flickering flame. Incomplete combustion = carbon monoxide. Shut it down immediately.
- Multiple repairs in two years. Ignitor, heat exchanger, blower motor failing in sequence means the furnace is in cascade failure.
What Furnace Size Does Your Scarborough Home Need?
Furnace sizing is done by BTU output using a Manual J load calculation. Getting it wrong causes short cycling and uneven heating. Here are starting estimates for Scarborough homes:
| Scarborough Home Size | Recommended BTU | Notes |
|---|---|---|
| Under 800 sq ft | 40,000–55,000 BTU | Small bungalows; condo |
| 800–1,200 sq ft | 55,000–75,000 BTU | Semi-detached, rowhouse |
| 1,200–1,800 sq ft | 75,000–100,000 BTU | Most Scarborough detached bungalows |
| 1,800–2,500 sq ft | 100,000–120,000 BTU | Two-storey detached |
| 2,500+ sq ft | 120,000+ BTU | Large detached; two-stage recommended |
Important for Scarborough: Homes built 1960s–1980s in Agincourt, Wexford, and Cliffside typically have R-12 or lower wall insulation and early double-pane windows. Heating load is consistently higher than square footage suggests. Madina Mechanical performs a free Manual J load calculation with every quote. To understand what can shape an estimate, see our Ontario new-furnace cost guide.
Best Furnace Brands for Scarborough Winters — 2026 Comparison
| Brand / Model | AFUE | HX Warranty | Installed (2026) |
|---|---|---|---|
| Lennox SLP99V | 98.7% | Lifetime | $5,500–$7,500 |
| Carrier Infinity 98 | 98.5% | 20 years | $5,200–$7,000 |
| Napoleon NSB96 ★ Best Value | 96% | Lifetime | $4,200–$5,800 |
| Daikin DM97MC | 97% | Lifetime | $4,000–$5,500 |
| Goodman GSX | 80–96% | 10–15 yrs | $2,400–$3,800 |
Madina’s recommendation for most Scarborough homes: Napoleon NSB96. Canadian-made, lifetime heat exchanger warranty, 96% AFUE, two-stage heating, and $1,000–$2,000 less than premium Lennox/Carrier at 2% less efficiency. It’s what we install in our own families’ homes.
Ready for a straight-up written quote?
We come to your Scarborough home, do the load calculation, and give you a written price. No pressure. No upselling. (416) 424-4328
Our Furnace Installation Process in Scarborough — Step by Step
Step 1 — Free In-Home Assessment (30–45 minutes)
A TSSA-certified gas technician visits your home. We inspect the existing furnace, measure the home, check ductwork, and assess exhaust venting. We check the heat exchanger for cracks and test combustion. Free, no obligation.
Step 2 — Manual J Load Calculation
We calculate your home’s exact heating load: square footage, ceiling height, window area, insulation R-value, exterior walls, and local design temperature (Scarborough: −18°C to −20°C). This determines what BTU output you actually need — not what fits in the current spot.
Step 3 — Written Quote with 2–3 Options
You get a written quote with options at different price points. We explain the AFUE difference, estimated annual savings, and what each warranty covers. The quote price is the invoice price. Always.
Step 4 — Installation Day (4–6 hours)
Our crew arrives with the furnace and parts. We shut off gas and electrical safely, disconnect and remove the old unit (disposal included), install the new furnace, connect the gas line, install new PVC venting or B-vent, wire the thermostat, and perform a full combustion safety check. We run the system through a complete heating cycle and confirm all rooms have proper airflow before leaving.
Step 5 — TSSA Permit and Inspection
All gas appliance installations in Ontario require a TSSA permit and inspection. We handle the permit application, inspection scheduling, and all paperwork. Never let a contractor skip the permit — it voids your home insurance.
2026 Ontario Furnace Rebates for Scarborough Homeowners
- Enbridge Gas Efficiency Rebate: Up to $100 on 96%+ AFUE furnace for Enbridge customers. Madina handles the paperwork.
- Ontario Home Renovation Savings (HRS) Program: 15% tax credit on energy-efficiency upgrades including furnaces. Up to $1,500 back. Active through November 2026. Requires a licensed contractor — Madina Mechanical qualifies.
- Financing: 0% options available for qualified applicants.
Scarborough Neighbourhoods We Serve for Furnace Installation
- Agincourt (M1S, M1T, M1V) — Majority 1960s–70s bungalows. Many on original 25–30-year-old furnaces. We see a lot of cracked heat exchangers here.
- Malvern (M1B) — 1980s–90s subdivisions. Mix of mid-efficiency units nearing end of life.
- Scarborough Village / Cliffside (M1M, M1N) — Postwar homes; heating loads higher than square footage suggests due to original insulation.
- West Hill / Rouge (M1E, M1C) — Mix of older and newer builds; some dual-fuel setups.
- Wexford (M1R, M1S) — 1950s–60s bungalows; often need upsizing on replacement.
- Highland Creek / Morningside (M1C, M1G, M1H) — Newer 1990s–2000s builds; well suited for 96%+ AFUE upgrades.
- Birchcliffe–Cliffside / The Bluffs — Lake Ontario cold exposure; properly sized high-efficiency unit makes a real temperature difference.
- North Scarborough (Steeles to Finch) — Larger 2,000+ sq ft homes; two-stage or variable-speed recommended.
Real Example: Malvern Furnace Replacement, January 2024
A Malvern homeowner called at 9 PM after her 22-year-old Carrier furnace stopped heating. Temperature was 16°C and falling. We arrived within 3 hours. Inspection confirmed a cracked heat exchanger — CO hazard, not safely repairable.
We sourced a Napoleon NSB96 (80,000 BTU, matching her 1,400 sq ft home’s load calculation), returned at 8 AM the next morning, completed the install by noon, and passed TSSA inspection the same afternoon. Home was at 22°C by 1 PM.
Her first full winter with the Napoleon — December 2024 Enbridge bill was $198 lower than the same month the prior year. The 96% vs estimated 62% AFUE delivered exactly what we projected.
🔗 Also see: Furnace Repair Scarborough | Heat Pump Installation Scarborough | AC Installation Scarborough | Furnace Replacement Scarborough
Frequently Asked Questions — Furnace Installation Scarborough
How much does furnace installation cost in Scarborough in 2026?
Furnace installation in Scarborough costs $2,400–$6,800 fully installed in 2026. Standard 80% AFUE: $2,400–$3,800. High-efficiency 96–98% AFUE: $4,200–$6,800. Prices include labour, unit supply, old furnace removal, TSSA permit, and all venting. Ontario rebates and 0% financing available. Free written quote: call Madina Mechanical at (416) 424-4328.
How long does furnace installation take in Scarborough?
A standard furnace replacement in Scarborough takes 4–6 hours. A straightforward like-for-like swap can take as little as 3–4 hours. Complex jobs involving venting changes or ductwork modifications can run 6–8 hours. Madina Mechanical completes the great majority of Scarborough furnace installations in a single day.
Do I need a permit for furnace installation in Scarborough?
Yes. All gas appliance installations in Ontario require a TSSA permit and post-installation inspection. Madina Mechanical handles the permit application, inspection scheduling, and all paperwork. Never let a contractor skip the permit — it voids your home insurance and creates personal liability.
What is the best furnace brand for Scarborough winters?
For most Scarborough homes, the Napoleon NSB96 (96% AFUE, lifetime heat exchanger warranty, Canadian-made, $4,200–$5,800 installed) offers the best value. The Lennox SLP99V at 98.7% AFUE is best-in-class for maximum efficiency. Madina Mechanical installs all major brands and recommends based on your home, not on margin.
What size furnace do I need for my Scarborough home?
Most Scarborough homes (1,200–1,800 sq ft) need a furnace in the 75,000–100,000 BTU range. Proper sizing requires a Manual J load calculation — done free by Madina Mechanical with every quote. Older Scarborough homes need more BTU than square footage suggests. An oversized furnace short-cycles; an undersized one can’t maintain temperature on −20°C days.
Can I get same-day furnace installation in Scarborough?
Yes, in most cases. Madina Mechanical keeps inventory and can often complete same-day or next-day installations in Scarborough. Call before noon at (416) 424-4328 for best availability. Emergency 24/7 no-heat service is also available.
Get Your Free Furnace Installation Quote in Scarborough
TSSA-certified. Manual J sizing. Written quote. Same-day available. Serving Scarborough since 2007.
