UK 2026 / Reviewed October 2026
Worcester Bosch boiler replacement cost
UK (Worcester), part of the Bosch group
New Worcester Bosch boilers installed from £2,199 at BOXT's published fixed prices (checked 22 October 2026). That is the floor for the smallest output in a like-for-like swap. Model-by-model prices are below.
Worcester Bosch models, prices and warranty
Installed prices are BOXT's published fixed "from" prices, which include removal of the old boiler and the installation labour. A dash means BOXT does not list a price for that model.
| Model | Type | Installed from | Warranty |
|---|---|---|---|
| Greenstar 1000 (30 kW) | Combi | £2,199 | Check at quote |
| Greenstar 4000 | Combi | £2,299 | 10 years as listed by BOXT |
| Greenstar 2000 | Combi | £2,349 | 7 years as listed by BOXT |
| Greenstar 8000 | Combi | £3,350 | Up to 12 years (8000 Life, accredited installer) |
Source: BOXT Worcester Bosch boilers, checked 22 October 2026.
Warranty and what it depends on
Up to 12 years on the Greenstar 8000 Life when fitted by a Worcester Bosch Accredited Installer. Worcester Bosch warranty terms
- The longest terms depend on a Worcester Bosch Accredited Installer and a Greenstar System Filter fitted at install
- Register the boiler with Worcester Bosch after installation and keep up the annual service
- Worcester Bosch's own guarantee pages were offline for maintenance on 22 October 2026; confirm the term for your exact model on worcester-bosch.co.uk before you sign
Frequently asked
How much does a Worcester Bosch boiler cost installed?
BOXT, a fixed-price online installer, publishes installed prices for Worcester Bosch boilers starting from £2,199 (checked 22 October 2026). That is the floor for the smallest output in a straightforward swap; a bigger output, a type change or a boiler move costs more. The Energy Saving Trust puts the average cost of replacing a G-rated gas boiler with an A-rated one, with radiator valves, at £3,500 in Great Britain.
What warranty does Worcester Bosch offer?
Up to 12 years on the Greenstar 8000 Life when fitted by a Worcester Bosch Accredited Installer. Conditions: The longest terms depend on a Worcester Bosch Accredited Installer and a Greenstar System Filter fitted at install; Register the boiler with Worcester Bosch after installation and keep up the annual service; Worcester Bosch's own guarantee pages were offline for maintenance on 22 October 2026; confirm the term for your exact model on worcester-bosch.co.uk before you sign.
How do I find an accredited installer?
Worcester Bosch runs its own installer search on its UK site. Separately, check any installer at gassaferegister.co.uk and ask to see their Gas Safe ID card before work starts. The manufacturer's accredited-installer status is what unlocks the longest warranty terms.
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