Gas Valve Replacement Cost — Furnace & Boiler (UK, 2026)
Estimated £180–£450 for a gas valve replacement in the UK, depending on the HVAC system and the exact fault. Built from 5 sourced repair jobs across 2 HVAC types — each row keeps its own sources. Reviewed July 2026.
What a gas valve 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 | Gas valve replacement | Standard gas valve replacement (installed) | £90–£150 | £180–£350 | Pro recommended |
| Gas Furnace | Gas valve replacement | Gas valve replacement — wider cited UK band (proprietary/high-end valve, or simple stuck-valve free) | £90–£200 | £200–£450 | Pro recommended |
| Gas Furnace | Pilot light / thermocouple won't stay lit | Gas valve replacement (root cause of last resort, standing-pilot models) | £90–£150 | £180–£350 | Pro recommended |
| Boiler | No heat / not firing up | Gas valve replacement | £90–£200 | £180–£450 | Pro recommended |
| Boiler | Ignition fault / lockout | Gas valve replacement | £90–£200 | £180–£450 | Pro recommended |
Base: 1 published national repair-cost guide (full source registry on the methodology page), published rates from 6 UK 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 gas valve 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).