How much does a new boiler cost in 2026?

A new boiler, supplied and fitted, typically costs between £1,800 and £5,500 in the UK, depending on the boiler type and complexity of installation.

Which boiler type is cheapest to install?

A like-for-like combi boiler swap in the same location is usually the cheapest option, typically £1,800-£3,500 fitted.

Why does moving a boiler cost more?

Relocating a boiler or converting from a conventional system to a combi requires extra pipework and labour, often pushing the total to £3,500-£5,500 or more.

Do you install new boilers alongside bathroom work?

Yes, we install new boilers and can plan heating capacity as part of a bathroom project, or as a standalone job.

New Boiler Installation Cost in 2026: What to Budget

lee mide
Aug 28
2 min read

Alongside bathroom installation, we fit new boilers and repair heating systems across Bromley, Orpington and the surrounding areas. Boiler pricing varies a lot by type and complexity, so here's a realistic breakdown using current UK trade data.

Written by the team at The Bathroom Project — hands-on bathroom, plumbing and heating specialists serving Bromley, Orpington and across Kent.

Typical installed cost

Per Checkatrade's 2026 boiler cost guide, boiler units alone range from £1,200 to £10,000 depending on brand and output, installation labour typically adds £1,000-£2,000, and the full supplied-and-fitted job comes to roughly £3,000-£15,000 depending on boiler type and complexity.

Cost by boiler type

For a simpler like-for-like swap, The Independent's 2026 UK guide puts a straightforward combi replacement at roughly £1,800-£4,500 fully installed, while MyJobQuote breaks it down further: combi boilers £1,200-£4,000, system boilers £1,100-£4,000, and conventional boilers £1,750-£5,500, supplied and fitted.

Why installation gets more expensive

Moving the boiler to a new location, converting from a conventional system to a combi, or replacing an old back boiler all add complexity and cost. A same-location, like-for-like swap is consistently the cheapest and quickest option across every source we checked.

Typical price ranges at a glance

Like-for-like combi boiler swap: roughly £1,800-£3,500 fitted
System boiler (with cylinder): roughly £2,200-£4,500 fitted
Conventional/regular boiler: roughly £1,750-£5,500 fitted
Full conversion or relocation: roughly £3,500-£5,500+ fitted
Installation labour alone: roughly £1,000-£2,000

Get an accurate quote

These figures are UK market guides, not a fixed quote for your job — the only way to get an exact number is a free, no-obligation consultation where we look at your specific job before pricing it.