CostandPriceAppliance Repair
Appliance Repair — New Zealand

Thermostat Replacement Cost — Oven, Refrigerator & More (New Zealand, 2026)

Estimated $62–$480 NZD for a thermostat replacement in New Zealand, depending on the appliance and the exact fault. Built from 17 sourced repair jobs across 6 appliance types — each row keeps its own sources. Reviewed July 2026.

What a thermostat replacement costs, by appliance 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.

ApplianceProblemRepairPartsTotalDIY
RefrigeratorNot coolingThermostat / cold-control / start relay repair$50–$250 NZD$180–$450 NZDPro recommended
RefrigeratorFreezer cold but refrigerator warmDefrost system repair (heater / thermostat / bi-metal)$40–$180 NZD$220–$450 NZDPro recommended
RefrigeratorFreezing food (too cold)Temperature control thermostat replacement$90–$180 NZD$250–$450 NZDPro recommended
RefrigeratorRuns constantlyDefrost system repair (heater / thermostat)$40–$180 NZD$220–$450 NZDPro recommended
RefrigeratorFrost or ice buildupDefrost thermostat / bi-metal replacement$35–$60 NZD$180–$350 NZDPro recommended
RefrigeratorNot running / no powerTemperature control thermostat / cold control replacement$90–$180 NZD$250–$450 NZDPro recommended
DryerNot heatingThermostat / thermal cut-out replacement$10–$90 NZD$100–$280 NZDDIY possible
DryerStops mid-cycle / shuts offCycling thermostat replacement$22–$70 NZD$140–$250 NZDPro recommended
DryerOverheating / too hotHigh-limit thermostat / thermal cut-out replacement$22–$70 NZD$140–$250 NZDPro recommended
Range / Stove / OvenOven not heatingOven thermostat replacement$40–$150 NZD$150–$350 NZDPro recommended
Range / Stove / OvenOven temperature incorrect / unevenOven temperature sensor / thermostat replacement$30–$90 NZD$240–$480 NZDPro recommended
Wall OvenNot heatingOven temperature sensor / thermostat replacement$25–$140 NZD$140–$350 NZDDIY possible
Wall OvenTemperature incorrect / unevenOven temperature sensor / thermostat replacement$25–$140 NZD$140–$350 NZDDIY possible
Over-the-Range MicrowaveVent fan not workingFan control / thermostat replacement$10–$19 NZD$62–$139 NZDDIY possible
Freezer (Chest / Upright)Frost or ice buildupDefrost thermostat / timer / control replacement$73–$81 NZD$171–$321 NZDPro recommended
Freezer (Chest / Upright)Not running / no powerCold-control thermostat replacement$23–$85 NZD$88–$245 NZDDIY possible
Freezer (Chest / Upright)Temperature fluctuatingCold-control thermostat replacement$23–$85 NZD$88–$245 NZDDIY possible

Base: 1 published national repair-cost guide (full source registry on the methodology page), published rates from 50 NZ repair companies · National base ranges — localize any figure on its linked problem page · Reviewed July 2026 · Estimated (GST-inclusive)

Related appliance cost guides

The full cost guide for each appliance a thermostat 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.