Compare supply-only and installed boiler costs →
What affects the cost?
Boiler prices are easy to misread because supply-only and fully installed figures are often quoted side by side. Current Checkatrade 2026 guidance puts supply-only boilers broadly around £1,200–£10,000 depending on technology, installation labour around £1,000–£2,000, and a straightforward like-for-like combi replacement around £2,500–£4,000. A gas combi replacement averages about £3,000, while broader or more complex installed projects can reach roughly £3,000–£15,000.
- Combi, system, conventional or alternative boiler type
- Like-for-like replacement versus system conversion
- Boiler output and brand
- Moving the boiler or changing the flue route
- Controls, filter and system cleaning
- Pipework, cylinder or radiator alterations
- Region and installation complexity
Typical cost breakdown
Regional planning examples
The examples below apply our published modelling factor to the same national benchmark. They are not claimed as observed city-wide average quotes.
New boiler costs by location
Open a detailed city page to see the same national benchmark adjusted through the transparent regional model, with local planning considerations and worked examples.
Sources used for this guide
New Boiler Costs in 2026: Prices & Installation
Published / checked: March 2026
Used for: Combi, system and conventional boiler supply-and-install benchmarks
Moving a Boiler: Cost Breakdown 2026
Published / checked: June 2026
Used for: Boiler relocation, controls, filters and pipework allowances
Frequently asked questions
How much is a new boiler including installation in 2026?
A straightforward like-for-like combi replacement is currently around £2,500–£4,000, with a gas combi average of about £3,000. More complex installed projects can run substantially higher.
Why do some boiler prices look much cheaper?
Some figures are supply-only. A boiler appliance may average around £1,500 for common gas types, while labour, flue work, controls, pipework and system changes are separate. Compare installed scope with installed scope.
How much does boiler installation labour cost?
Current guidance gives about £1,000–£2,000 for installation labour as a broad benchmark, before unusual system changes or difficult access.
Does moving a boiler add cost?
Yes. Relocation can require extra pipework, condensate drainage, flue work and making good. The calculator keeps boiler-moving allowances separate from the core replacement benchmark.
Related costs
Boiler service
Current UK boiler service costs for gas, oil and electric boilers, plus common boiler-cover benchmarks.
Around £100 for a gas boiler serviceView guide →Cost guideCentral heating installation
UK full central heating installation costs for gas, oil and electric systems, including common pipework and radiator allowances.
Around £5,250 for a gas central heating installationView guide →Cost guideHeat pump
Current UK heat-pump costs for air-to-air, air-to-water and ground-source systems, with 2026 Boiler Upgrade Scheme grant values shown separately.
About £15,000 for air-to-water before grantView guide →