PRICE GUIDE · PLUMBING & HEATING · 2026–2027
Boiler Installation cost in the UK
£1,800–£4,500 per install. Typically £2,800.
A new gas boiler fitted in the UK costs £1,800–£4,500, around £2,800 typical. A like-for-like combi swap is cheapest; moving the boiler, converting from a system to a combi, new pipework or a system boiler with a new cylinder costs more.
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HOW MUCH IT COSTS
How much does boiler installation cost in the UK?
| Low end | £1,800 | a like-for-like combi swap |
|---|---|---|
| Typical | £2,800 | what most people pay |
| High end | £4,500 | a system boiler with a new cylinder, or a relocated boiler |
Locufy guide prices for 2026–2027. Updated 2026. A national range, not a quote — enter your town above for real prices from the plumbers and heating firms near you.
What moves the price
- Like-for-like or a change — swapping a combi for a combi costs less than converting a system to a combi
- Boiler type — system and regular boilers with a cylinder cost more to install than a combi
- Moving the boiler — a new location means new gas, water and condensate pipes and a new flue
- Boiler brand and warranty — premium boilers with long warranties cost more upfront
- System clean and filter — a power flush and magnetic filter are often part of a proper boiler installation
- Region — boiler installers in London and the South East charge more for the same job
Plumbing and heating prices in the UK are up 6% over five years (ONS Consumer Price Inflation, Services for maintenance and repair, to 2026 August). Five years ago a typical boiler installation would have cost about £2650 — an estimate from today's guide price and that index, not a recorded price. Source: ONS MM23 D7DO →
WHAT YOU GET
What a boiler installation booking includes
Takes: One day for a like-for-like swap, two to three days for a system change or move. Not included: New radiators, a full power flush on a sludged system and smart thermostats beyond the standard controls may be priced separately — see the related guides below.
WHAT PEOPLE BOOK
Common boiler installation jobs
KNOW THE PRICE? NOW SEE THE REAL ONES
Boiler Installation near you, with prices shown
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How to pay less
- Keep the new boiler in the same place to avoid new pipework and flue costs
- Choose a combi with a good warranty rather than the most expensive brand on the market
- Compare written boiler installation quotes from several installers, each listing the model, warranty and extras
- Book boiler installation in late spring or summer, when installers are less busy than in the winter rush
Before you book
- Only a Gas Safe registered engineer may fit a gas boiler, and they must notify building control
- A heat pump may qualify for the Boiler Upgrade Scheme grant, so compare before replacing a gas boiler
- Ask what warranty the boiler carries and whether yearly servicing is needed to keep it
- Check the quote includes a system flush and magnetic filter to protect the new boiler
Boiler Installation cost: questions people ask
£1,800–£4,500 per install, about £2,800 typical. A like-for-like combi swap costs least; a system boiler with a new cylinder, or moving the boiler, costs the most.
Usually a day for a like-for-like swap and two to three days for a change of system or location.
Only a Gas Safe registered engineer. They register the installation with building control, and you should receive a certificate within a few weeks.
It depends on your home and budget. The Boiler Upgrade Scheme offers £7,500 towards an air source heat pump, so it is worth comparing before replacing a gas boiler.
New radiators, a full power flush on a heavily sludged system and upgraded smart controls may be extra.
They are Locufy guide prices for the UK, drawn from published UK new boiler costs — a national range, not a quote. The boiler type and any change of system decide your price.
MORE GUIDES