UK heating calculator

Boiler Replacement Cost Calculator

Build a planning budget for a combi, system or conventional boiler replacement and common installation extras.

Replacement type

UK region

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Estimated boiler replacement budget

£2,350 – £3,760

Typical 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 →