Independent UK guide
Combi boilers, priced and explained
Browse combi boilers and the other boiler types, see what each popular model really costs fitted, and compare free quotes from Gas Safe installers near you.
- Prices from published 2026 sources, updated regularly
- Every price includes VAT
- Quotes from up to four local installers
Browse models
All combi boiler models →Browse boiler types
All boiler types →- Gas combi boilersfrom £1,80024 to 30kW gas combi boiler, like-for-like swap, fitted
- System boilersfrom £2,500Gas system boiler, like-for-like swap, fitted, hot water cylinder not included
- Regular boilersfrom £2,500Gas regular (heat-only) boiler, like-for-like swap, fitted
- Electric boilersfrom £2,20012kW electric boiler, no cylinder, fitted
- Oil boilersfrom £2,700Oil boiler, heat-only at the low end and combi at the high end, fitted
Browse installation
All boiler installation →Browse service and repair
All boiler service and repair →What a new combi boiler costs
The main boiler types, replaced like for like, fitted and including VAT:
| Type | Typical | Most pay |
|---|---|---|
| Gas combi boilers | £2,700 | £1,800–£3,500 |
| System boilers | £3,000 | £2,500–£3,500 |
| Regular boilers | £3,000 | £2,500–£3,500 |
| Electric boilers | £3,000 | £2,200–£3,800 |
Guide prices from published UK sources. Every product and region · how we price
Boiler installers near you
Prices and installers by region. Labour is most of the difference in price from one area to the next.
Who can fit a new boiler?
Gas boilers must be fitted by a Gas Safe registered engineer. Ask to see their Gas Safe card, which shows what they are registered to work on, before they start, and check them on the Gas Safe Register.
In England, installing a boiler is also notifiable under the Building Regulations. A registered installer notifies the work for you and gives you a certificate, and manufacturers usually ask for it before they will honour a long warranty. Scotland and Northern Ireland have their own rules.
How getting quotes works
- Tell us about the jobA short form: what you need, the type of boiler, your home and your postcode.
- Local installers get in touchUp to four firms that cover your area get in touch with you directly.
- Compare and chooseUse our quote checklists and compare tool to weigh them up. There is no obligation.
Worcester Bosch, Vaillant and Viessmann are trade marks of their respective owners. CombiBoiler.net is independent and is not affiliated with, sponsored or endorsed by any manufacturer. We name brands only to help you compare like with like; see how we make money.