How Much Does a New Boiler Cost in 2026?
Replacing an old boiler improves efficiency and reliability. Cost depends on the boiler type, brand and how complex the installation is.
Cost breakdown
| Combi boiler (supplied & fitted) | £1,800–£3,000 |
| System boiler (supplied & fitted) | £2,000–£3,500 |
| Regular boiler (supplied & fitted) | £2,200–£3,800 |
| Boiler relocation (extra) | £300–£600 |
| Annual service | £80–£120 |
What affects the price
- •Boiler type and output
- •Brand and warranty length
- •Moving the boiler location
- •System upgrades and flushing
- •Controls and smart thermostats
FAQs
How much does a new combi boiler cost?
A new combi boiler typically costs £1,800–£3,000 supplied and fitted, depending on the brand and installation.
How long does a boiler installation take?
A straightforward swap takes a day. A full system change or relocation can take 2–3 days.
Who can install a boiler?
Only a Gas Safe registered engineer can legally install or replace a gas boiler.
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