Furnace Flame Sensor Replacement Cost (New Zealand, 2026)
Estimated $290–$780 NZD for a flame sensor replacement in New Zealand, depending on the HVAC system and the exact fault. Built from 2 sourced repair jobs across 2 HVAC types — 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 | Flame sensor cleaning / replacement | Replace the flame sensor / ionisation probe and its lead | $60–$280 NZD | $290–$690 NZD | Pro recommended |
| Oil Furnace | Cad cell / primary control replacement | Flame sensor (photocell) replacement on a diesel burner that locks out on flame failure | $90–$300 NZD | $330–$780 NZD | Pro recommended |
Base: published rates from 12 NZ repair companies · National base ranges — localize any figure on its linked problem page · Reviewed July 2026 · Estimated (GST-inclusive)
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).