How Much Does a New Boiler Installation Cost in the UK? (2026 Guide)
The UK average cost of a new boiler installation is between £1,300 and £3,700 for a 3-bedroom home.
Prices vary by up to 40% depending on your region. Select your area below for local estimates.
Supply and installation of a new gas combi, system, or regular boiler including removal of the old unit. The total cost depends on your location, property size, and the complexity of the work. Labour costs in London and the South East are typically 20-40% higher than the national average, while the North East, Wales, and Scotland tend to be 10-20% lower.
Cost Calculator
Estimated new boiler installation costs in the UK, adjusted for local labour rates.
Estimates based on a 3 bed semi-detached property in the UK. Labour rates reflect the local cost of living. Materials are priced at national averages. Always obtain at least 3 quotes from local tradespeople.
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New Boiler Installation in the UK: Frequently Asked Questions
How long does a new boiler installation take?
A straightforward like-for-like replacement typically takes 1 day. If the boiler is being moved to a new location or the system is being converted (e.g., from a regular to a combi boiler), expect 2-3 days.
What type of boiler is best for my home?
Combi boilers suit most 1-3 bedroom homes with one bathroom. System boilers are better for larger homes with multiple bathrooms as they use a hot water cylinder. Regular (conventional) boilers work with existing gravity-fed systems and are ideal for homes with older pipework.
Do I need a Gas Safe engineer?
Yes. It is a legal requirement in the UK for all gas boiler installations to be carried out by a Gas Safe registered engineer. You can verify an engineer's registration at the Gas Safe Register website.
How long will my new boiler last?
A well-maintained modern boiler should last 12-15 years. Most manufacturers offer warranties between 5 and 12 years depending on the model and whether annual servicing is maintained.
Can I get a grant towards a new boiler?
You may be eligible for the Boiler Upgrade Scheme (BUS) if you are switching to a heat pump, or the Energy Company Obligation (ECO4) scheme if you are on certain benefits. Check the government's Simple Energy Advice service for eligibility.