Furnace Repair Cost in Toronto: Real 2026 Numbers

Most furnace repairs in Toronto land between $220 and $650 all-in. A diagnostic visit runs $99–$160 and is normally credited toward the repair. Here is what the common failures actually cost.

Typical repair costs by part

• Flame sensor clean or replace: $180–$280
• Igniter (hot surface): $250–$400
• Pressure switch: $280–$450
• Draft inducer motor: $500–$900
• Blower motor (ECM): $700–$1,300
• Control board: $600–$1,100
• Secondary heat exchanger: $1,500–$2,800 (replacement territory)

Why the same symptom has different prices

"No heat" can be a $10 sensor covered in soot or a cracked heat exchanger that condemns the unit. That is why a real diagnostic — combustion analysis, static pressure, flame rectification reading — matters more than the hourly rate.

Repair or replace?

Use three tests. First, age: past 15 years, most GTA furnaces are on borrowed time. Second, the 50% rule — if the repair is over half the cost of a new mid-efficiency-equivalent install, replace. Third, safety: a cracked heat exchanger or failed combustion test is a replacement, full stop.

What raises your bill unnecessarily

• Skipping annual maintenance. Most emergency calls we run in January trace back to a dirty burner, a clogged filter or a plugged condensate trap.
• Waiting. A struggling inducer that gets ignored takes the board with it.
• Emergency timing. Overnight and holiday rates exist everywhere, including here.

What we include

Up-front pricing before work starts, TSSA-licensed technicians, a written safety report with combustion readings, and parts warranty in writing. No diagnosis-by-phone, no surprise line items.

Get your estimate now

Try the furnace repair cost calculator for an instant range, or read the furnace repair service page for what a visit covers. No heat right now? Call us for same-day service or request a free quote — we cover Toronto, Mississauga, Brampton, Vaughan, Markham, Richmond Hill, Oakville and Burlington.