Furnace Flame Sensor Replacement Cost (Canada, 2026)
Estimated $75–$250 CAD for a flame sensor replacement in Canada, depending on the HVAC system and the exact fault. Built from 4 sourced repair jobs across 1 HVAC type — each row keeps its own sources. Reviewed July 2026.
What a flame sensor replacement costs, by HVAC and fault Estimated
Each row is a real sourced repair job whose description matched this part. Parts and total are that job's own national range — follow the problem link to localize it to your area.
| HVAC | Problem | Repair | Parts | Total | DIY |
|---|---|---|---|---|---|
| Gas Furnace | Not heating / blowing cold air | Flame sensor cleaning or replacement | $25–$50 CAD | $75–$250 CAD | DIY possible |
| Gas Furnace | Short cycling (turns on and off) | Flame sensor cleaning | $0–$20 CAD | $75–$250 CAD | DIY possible |
| Gas Furnace | Flame sensor cleaning / replacement | Flame sensor cleaning (no replacement) | $0–$10 CAD | $75–$220 CAD | DIY possible |
| Gas Furnace | Flame sensor cleaning / replacement | Flame sensor replacement | $20–$50 CAD | $90–$250 CAD | DIY possible |
Base: published rates from 5 Canadian repair companies · National base ranges — localize any figure on its linked problem page · Reviewed July 2026 · Estimated
Related HVAC cost guides
The full cost guide for each HVAC system a flame sensor replacement shows up in:
Estimated national ranges aggregated from the linked problem pages — no per-page localization is applied here. See the methodology for the localization method and named sources.
Reviewed by a Red Seal–certified appliance technician who also holds a Technical Safety BC gas ticket (Gas-C) and an ODS/halocarbon refrigerant ticket (CFC/HCFC/HFC).