Cost of New Boiler: How Much Should You Expect in 2025?

If you’re thinking about swapping out an old heating system, the first thing on your mind is probably the price tag. A new boiler isn’t a simple purchase – you’re paying for the unit, the install, any necessary pipework, and a safety check. In 2025 the average range sits between £2,200 and £4,800, but that number can swing up or down depending on a few key things.

What Makes the Price Jump?

First, the type of boiler matters. A combi boiler, which provides hot water on demand, usually costs more than a system boiler that stores hot water in a tank. Fuel type also matters – gas boilers are cheaper than oil or electric models. Brand reputation plays a part too; well‑known names charge a premium for reliability and longer warranties.

Second, installation complexity can add a few hundred pounds. If your pipework needs rerouting, a new flue is required, or the current system is outdated, the tradesperson will need extra time and materials. Some homes need a new gas safety certificate, which is a mandatory extra cost.

How to Keep the Bill Down

Shop around for quotes. Get at least three estimates and compare what each includes – labor, parts, disposal of the old unit, and any after‑care. Look for seasonal promotions; many installers slash prices in spring or autumn when business slows.

Consider a boiler with a solid warranty but avoid over‑paying for a 10‑year plan if you don’t plan to stay in the house that long. A decent 5‑year warranty often covers the most common issues without breaking the bank.

Don’t forget government schemes. In England, the Boiler Upgrade Scheme (BUS) can cover up to 70% of the cost for eligible homes, and some local councils offer additional rebates. Check the latest eligibility criteria before you book anyone.

Finally, maintenance saves money in the long run. An annual service costs around £80‑£120 and can prevent costly breakdowns that would otherwise require a full replacement sooner than expected.

Bottom line: the cost of a new boiler isn’t just the price on the box. Factor in boiler type, installation challenges, warranties, and possible rebates. Do the legwork, ask the right questions, and you’ll land a fair price without surprise bills later.