When you need a new boiler, a central heating unit that warms your home and provides hot water. Also known as a gas boiler, it’s one of the most important systems in your house—especially in the UK where winters are long and energy bills matter. A broken boiler isn’t just inconvenient; it’s unsafe. And replacing it isn’t a simple shopping trip—it’s a big decision that affects your comfort, your wallet, and your energy use for the next 10 to 15 years.
What you pay for a new boiler isn’t just the price tag on the box. It’s the installation cost, the labor, piping, flue work, and safety checks a Gas Safe engineer must do. It’s the boiler type, whether it’s a combi, system, or regular boiler. It’s whether you’re upgrading from an old G-rated unit to a modern A-rated one. And it’s whether your home needs extra work—like new radiators, a smart thermostat, or a power flush. Many people think they’re paying for a boiler, but they’re really paying for a whole heating system reset.
Most new boilers in the UK cost between £1,800 and £3,500 installed. A basic combi boiler for a small home might start at £1,800. A high-end model with smart controls and a 10-year warranty could push past £3,500. If your home has old pipes or needs a new flue, add another £300 to £800. Some people skip the power flush to save money, but that’s a false saving—dirty systems kill new boilers fast. And don’t fall for the £99 boiler deals. They’re bait. The real cost shows up in hidden fees, cheap parts, or rushed work.
You’ll find plenty of guides that say "boiler replacement costs £2,500"—but that’s a guess. Real prices depend on your location, your home size, your current system, and the engineer you hire. In Bognor Regis, a local Gas Safe engineer knows your area’s plumbing quirks. They’ll know if your gas line needs upgrading or if your chimney needs relining. That local expertise saves you from costly mistakes later.
And here’s the thing: a new boiler isn’t just about replacing a broken part. It’s about cutting your energy bill. A 15-year-old boiler might be running at 65% efficiency. A new one hits 94%. That’s 30% less gas. Over five years, that pays for itself. So when you’re looking at the price of a new boiler, don’t just look at the upfront cost. Look at the long-term savings.
Below, you’ll find real stories and price breakdowns from people who’ve been there. We’ve pulled together guides on boiler repair costs, how to spot when it’s time to replace, and what questions to ask a Gas Safe engineer before you sign anything. No fluff. No upsells. Just what you need to know before you spend thousands on your home’s most important appliance.
Find out how much a new boiler costs in 2025, including prices by type, installation fees, rebates, and how to avoid overpaying. Learn when to replace your boiler and what to look for in a quote.
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