What will a new boiler cost?
A starting figure before you call an installer. Pick the boiler type, the brand tier, your property size and the job — a straight swap, a change of type, or a relocation — and we give you an indicative UK installed price range adjusted for your region, with the usual extras broken out. A budget to plan around before the quotes come in. Free, no sign-up.
A guide, not a quote. The ranges are typical 2025/26 UK installed prices — the boiler, the fitter's labour and a normal install, inclusive of VAT — drawn from published industry averages. They exclude any non-standard pipework, a gas-supply upgrade, building work, asbestos removal, or scaffolding. Every install is different: the only real number is a written, fixed-price quote from a Gas Safe registered engineer, and you should get at least three. Nothing you type leaves your browser.
Type and size set the boiler; the job sets the labour.
Combi, system or regular. A combi heats water on demand with no tank — simplest and cheapest, and right for most flats and smaller homes. System and regular boilers feed a hot-water cylinder, which suits a bigger home running two or more bathrooms at once. Switching from one to another (say a regular boiler with a loft tank to a combi) is a bigger job than a like-for-like swap.
Brand tier is the warranty as much as the boiler. A premium make with a 10-year guarantee costs more up front but is cheaper to run and to back if it fails. A budget brand fits a tighter budget but tends to carry a shorter warranty.
The job drives the labour. A straight swap in the same spot is a day's work. Changing the boiler type or moving it to a new location means re-routing pipework — and removing an old cylinder or loft tank — which adds time and cost.
Don't skip the flush. Many manufacturers require the system to be cleaned (a power flush or a thorough chemical flush) before they'll honour the warranty on a new boiler — old sludge wrecks a new unit. A magnetic filter then keeps it clean. We include both by default because most installs need them.
Watch for the grants. If you're replacing an old gas boiler with a heat pump, the government's Boiler Upgrade Scheme can take a big chunk off — that's a different system and a different sum. This tool prices a gas-boiler replacement.
Keep the boiler's history in one place.
Stead holds your boiler's make and model, the install date and warranty, who fitted it and when its next service is due — so the cover doesn't lapse, and the paperwork's to hand for a claim or a sale.