UK heating calculator
Boiler Replacement Cost Calculator
Build a planning budget for a combi, system or conventional boiler replacement and common installation extras.
Estimated boiler replacement budget
£2,350 – £3,760Typical planning estimate £2,820. Complex fuel changes, extensive radiator work and unusual flue routes may cost more.
Benchmark source: Checkatrade 2026 new-boiler and boiler-moving cost guides. Regional and combined-range adjustments are UK Home Costs modelling assumptions. See sources →
Compare supply-only, installation and fully installed boiler costs →