New boiler cost guide
What a new boiler really costs in the UK, what changes the price, and how to avoid paying more than you need to.
A new boiler is a big purchase, so it helps to know what drives the price before you get a quote. This guide breaks down what a new boiler costs in the UK and how to make sure you pay a fair, fixed price.
Typical new boiler prices
As a rough guide, a fully installed new boiler in the UK costs:
- Combi boiler swap (like for like): around £1,800 to £2,800
- System or regular boiler: around £2,200 to £3,500
- Converting to a different boiler type: £3,000 and up, because of extra pipework and time
These figures include the boiler and professional installation. Your exact price depends on your home and the boiler you choose.
What affects the cost
Several things move the price up or down:
- The boiler itself. Premium brands like Worcester Bosch and Vaillant cost more than value brands like Baxi or Glow-worm, but often come with longer guarantees.
- Boiler size. A higher output boiler for a larger home with more bathrooms costs more.
- Moving the boiler. Relocating the boiler to a new spot adds pipework, flue changes and labour.
- Your existing system. Old or sludgy pipework may need a flush or new parts.
- Extras. A system filter, smart thermostat or new flue all add to the total, but can be worth it.
What should be included
A fair fixed price should cover the boiler, the installation by a Gas Safe registered engineer, removal and safe disposal of your old boiler, and registration of the manufacturer warranty. With Norvera it also includes a written price up front, so there are no surprises on the day.
How to keep the cost down
- Choose the right size boiler for your home rather than the biggest one available.
- Consider a strong value brand with a long guarantee.
- Get a fixed written quote so the price cannot creep up mid job.
- Keep your new boiler serviced each year to protect the warranty and efficiency.
Get a fixed price
The only way to know exactly what your boiler will cost is a proper assessment. Answer a few quick questions and we will give you a fixed, written price with no obligation.
Frequently asked questions
How much does a new boiler cost in the UK?+
Most new boiler installations fall between about £1,800 and £3,500 fully fitted, depending on the boiler, your home and any extra work. A straightforward like-for-like combi swap sits at the lower end, while larger homes or a change of boiler type cost more.
Does the price include installation?+
With Norvera, yes. Our prices are fixed and installed, covering the boiler, professional fitting by a Gas Safe engineer, removal of your old boiler and warranty registration. You get a written price before any work starts.
Why do quotes vary so much?+
Price depends on the boiler brand and size, whether the boiler is moving position, the state of your existing pipework, and any extras like a filter or new flue. A proper assessment is the only way to get an accurate figure.
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