Boiler Replacement Cost Calculator (UK 2026)
Estimate the cost of a new boiler in seconds, by type, property size and brand tier.
Estimated installed cost
–
Indicative 2026 prices.
Combi boilers suit smaller homes; system and regular boilers suit larger homes with higher hot-water demand. Premium brands (Worcester Bosch, Vaillant) cost more but offer longer warranties. Low-income households may get a free boiler grant. See our boiler cost guide.