Contactor Replacement Cost — AC & Heat Pump (U.S., 2026)
Estimated $140–$900 for a contactor replacement in the U.S., depending on the HVAC system and the exact fault. Built from 7 sourced repair jobs across 3 HVAC types — each row keeps its own sources. Reviewed July 2026.
What a contactor 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 |
|---|---|---|---|---|---|
| Central Air Conditioning | Not cooling / blowing warm air | Contactor / relay replacement | $15–$100 | $200–$450 | DIY possible |
| Central Air Conditioning | Won't turn on / no power | Contactor replacement | $15–$100 | $200–$450 | DIY possible |
| Central Air Conditioning | Contactor / relay replacement | Contactor / relay replacement | $15–$100 | $200–$450 | DIY possible |
| Central Air Conditioning | Contactor / relay replacement | Contactor + capacitor combo replacement | $30–$150 | $300–$550 | DIY possible |
| Heat Pump | Not cooling | Contactor replacement | $15–$100 | $200–$450 | DIY possible |
| Heat Pump | Short cycling (turns on and off) | Failing start capacitor, contactor or pressure switch replaced; thermostat recalibrated or moved off a bad wall | $25–$230 | $140–$500 | Pro recommended |
| Thermostat & Controls | Heating or cooling won't shut off | Welded contactor, fan-centre relay or failed control board replaced | $40–$450 | $150–$900 | Pro recommended |
Base: 3 published national repair-cost guides (full source registry on the methodology page), published rates from 14 local 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 contactor 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).