What's Included in an Ontario Furnace Tune-Up?

A proper Ontario furnace maintenance visit — performed by a TSSA-registered gas technician — covers a comprehensive checklist that goes far beyond a basic filter swap:

Ontario TSSA Requirements for Furnace Maintenance

TSSA registration is the Ontario-specific standard for gas work — separate from HVAC certifications like NATE or RSES. When booking furnace service in Ontario, always confirm the technician holds a TSSA gas technician licence. G2 (domestic and commercial gas) is the most common licence for residential furnace service; G1 covers high-pressure systems above 7 psi.

Furnace Maintenance vs. Repair: Ontario Cost Comparison

A properly maintained gas furnace in Ontario lasts 20–25 years. Without maintenance, expect 12–15 years before major component failure. The rule of thumb: if a repair costs more than 50% of a new furnace AND the furnace is older than 15 years, replacement is usually the better investment — especially given Ontario's current Enbridge energy efficiency rebate programs (up to $1,000 for qualifying high-efficiency models).

When Should Ontario Homeowners Service Their Furnace?

A properly maintained gas furnace in Ontario lasts 20–25 years. Without maintenance, expect 12–15 years before major component failure. The rule of thumb: if a repair costs more than 50% of a new furnace AND the furnace is older than 15 years, replacement is usually the better investment — especially given Ontario's current Enbridge energy efficiency rebate programs (up to $1,000 for qualifying high-efficiency models).

Furnace Maintenance Cost Ontario 2026 — $120 to $250

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