Worcester Bosch Boiler Replacement & Installation
Find the Right Boiler for Your Home
Worcester Bosch boilers are one of the most recognisable choices in the UK, valued for efficient performance, strong reliability and a wide range of combi, system and regular models. Whether you’re replacing an ageing boiler or upgrading to improve comfort and reduce running costs, Worcester Bosch offers options suited to everything from smaller homes to larger properties with higher hot water demand.
On this page you can explore Worcester Bosch boiler models with clear, comparable details to help you shortlist the right fit. If you’re unsure where to start, consider your current boiler type and your day-to-day hot water use (number of bathrooms, peak-time demand, etc.) — we’ll guide you towards a suitable Worcester Bosch boiler and a straightforward installation package.
Recommended Boilers
2000 25KW
- Combi Gas Boiler
- 20kW
- Band rating: A
- ERP rating: A
2000 30KW
- Combi Gas Boiler
- 20kW
- Band rating: A
- ERP rating: A
Greenstar 12RI
- Regular Gas Boiler
- 12kW
- Band rating: A
- ERP rating: A
Greenstar 18RI
- Regular Gas Boiler
- 18kW
- Band rating: A
- ERP rating: A
Greenstar 21RI
- Regular Gas Boiler
- 21kW
- Band rating: A
- ERP rating: A
Greenstar 24RI
- Regular Gas Boiler
- 24kW
- Band rating: A
- ERP rating: A
Greenstar 27RI
- Regular Gas Boiler
- 27kW
- Band rating: A
- ERP rating: A
Greenstar 30RI
- Regular Gas Boiler
- 30kW
- Band rating: A
- ERP rating: A
Greenstar 4000 12KW
- System Gas Boiler
- 12kW
- Band rating: A
- ERP rating: A
- Warranty: 10 years
Greenstar 4000 15 Kw
- System Gas Boiler
- 15kW
- Band rating: A
- ERP rating: A
- Warranty: 10 years
Greenstar 4000 18KW
- System Gas Boiler
- 18kW
- Band rating: A
- ERP rating: A
- Warranty: 10 years
Greenstar 4000 21KW
- System Gas Boiler
- 21kW
- Band rating: A
- ERP rating: A
- Warranty: 10 years
Greenstar 4000 24KW
- System Gas Boiler
- 24kW
- Band rating: A
- ERP rating: A
- Warranty: 10 years
Greenstar 4000 25KW
- Combi Gas Boiler
- 24kW
- Band rating: A
- ERP rating: A
- Warranty: 10 years
Greenstar 4000 30KW
- Combi Gas Boiler
- 24kW
- Band rating: A
- ERP rating: A
- Warranty: 10 years
Greenstar 8000+ 30KW
- System Gas Boiler
- 30kW
- Band rating: A
- ERP rating: A
Greenstar 8000+ 30KW
- Regular Gas Boiler
- 30kW
- Band rating: A
- ERP rating: A
Greenstar 8000+ 32KW
- Combi Gas Boiler
- 32kW
- Band rating: A
- ERP rating: A
Greenstar 8000+ 35KW
- System Gas Boiler
- 35kW
- Band rating: A
- ERP rating: A
Greenstar 8000+ 35KW
- Regular Gas Boiler
- 35kW
- Band rating: A
- ERP rating: A
Greenstar 8000+ 36KW
- Combi Gas Boiler
- 36kW
- Band rating: A
- ERP rating: A
Greenstar 8000+ 40KW
- Regular Gas Boiler
- 40kW
- Band rating: A
- ERP rating: A
Greenstar 8000+ 40KW
- Combi Gas Boiler
- 40kW
- Band rating: A
- ERP rating: A
Greenstar 8000+ 45KW
- Regular Gas Boiler
- 45kW
- Band rating: A
- ERP rating: A
Greenstar 8000+ 45KW
- Combi Gas Boiler
- 45kW
- Band rating: A
- ERP rating: A
Greenstar 8000+ 50KW
- Regular Gas Boiler
- 50kW
- Band rating: A
- ERP rating: A
Greenstar 8000+ 50KW
- Combi Gas Boiler
- 50kW
- Band rating: A
- ERP rating: A
Greenstar 8000+ Style 32KW
- Combi Gas Boiler
- 32kW
- Band rating: A
- ERP rating: A
Greenstar 8000+ Style 36KW
- Combi Gas Boiler
- 36kW
- Band rating: A
- ERP rating: A
Other Boilers
GB162 100KW
- System Gas Boiler
- 99.5kW
- Band rating: A
- ERP rating: A
GB162 50KW
- System Gas Boiler
- 49.9kW
- Band rating: A
- ERP rating: A
GB162 65KW
- System Gas Boiler
- 69.5kW
- Band rating: A
- ERP rating: A
GB162 85KW
- System Gas Boiler
- 84.5kW
- Band rating: A
- ERP rating: A
Greenstar 12I
- System Gas Boiler
- 12.2kW
- Band rating: A
- ERP rating: A
Greenstar 15I
- System Gas Boiler
- 15.3kW
- Band rating: A
- ERP rating: A
Greenstar 15RI
- Regular Gas Boiler
- 15kW
- Band rating: A
- ERP rating: A
Greenstar 18I
- System Gas Boiler
- 18.4kW
- Band rating: A
- ERP rating: A
Greenstar 2000 25 Kw
- Combi Gas Boiler
- 20kW
- Band rating: A
- ERP rating: A
Greenstar 2000 30 Kw
- Combi Gas Boiler
- 20kW
- Band rating: A
- ERP rating: A
Greenstar 21I
- System Gas Boiler
- 21.6kW
- Band rating: A
- ERP rating: A
Greenstar 24I
- System Gas Boiler
- 24.6kW
- Band rating: A
- ERP rating: A
Greenstar 24I Junior
- Combi Gas Boiler
- 24kW
- Band rating: B
- ERP rating: A
Greenstar 25I
- Combi Gas Boiler
- 24kW
- Band rating: A
- ERP rating: A
Greenstar 25SI Compact
- Combi Gas Boiler
- 24kW
- Band rating: A
- ERP rating: A
Greenstar 27CDI
- Combi Gas Boiler
- 27kW
- Band rating: A
- ERP rating: A
Greenstar 27I
- System Gas Boiler
- 27kW
- Band rating: A
- ERP rating: A
Greenstar 28CDI Compact
- Combi Gas Boiler
- 24kW
- Band rating: A
- ERP rating: A
Greenstar 28I Junior
- Combi Gas Boiler
- 28kW
- Band rating: B
- ERP rating: A
Greenstar 29CDI Classic
- Combi Gas Boiler
- 29kW
- Band rating: B
- ERP rating: A
Greenstar 30CDI
- Combi Gas Boiler
- 30kW
- Band rating: A
- ERP rating: A
Greenstar 30CDI Classic
- System Gas Boiler
- 30kW
- Band rating: A
- ERP rating: A
Greenstar 30CDI Classic
- Regular Gas Boiler
- 30kW
- Band rating: A
- ERP rating: A
Greenstar 30I
- System Gas Boiler
- 30kW
- Band rating: A
- ERP rating: A
Greenstar 30I
- Combi Gas Boiler
- 24kW
- Band rating: A
- ERP rating: A
Greenstar 30SI Compact
- Combi Gas Boiler
- 24kW
- Band rating: A
- ERP rating: A
Greenstar 32CDI Compact
- Combi Gas Boiler
- 24kW
- Band rating: A
- ERP rating: A
Greenstar 34CDI Classic
- Combi Gas Boiler
- 34kW
- Band rating: A
- ERP rating: A
Greenstar 35CDI Classic
- System Gas Boiler
- 35kW
- Band rating: A
- ERP rating: A
Greenstar 36CDI Compact
- Combi Gas Boiler
- 24kW
- Band rating: A
- ERP rating: A
Greenstar 37CDI
- Combi Gas Boiler
- 32kW
- Band rating: A
- ERP rating: A
Greenstar 38CDI Classic
- Combi Gas Boiler
- 38kW
- Band rating: A
- ERP rating: A
Greenstar 40CDI Classic
- Regular Gas Boiler
- 40kW
- Band rating: A
- ERP rating: A
Greenstar 42CDI
- Combi Gas Boiler
- 42kW
- Band rating: A
- ERP rating: A
Greenstar 42CDI Classic
- Combi Gas Boiler
- 42kW
- Band rating: A
- ERP rating: A
Greenstar 8000 Style 30KW
- System Gas Boiler
- 30kW
- Band rating: A
- ERP rating: A
Greenstar 8000 Style 35KW
- System Gas Boiler
- 35kW
- Band rating: A
- ERP rating: A
Greenstar 8000 Style 40KW
- Combi Gas Boiler
- 35kW
- Band rating: A
- ERP rating: A
Greenstar 8000 Style 45KW
- Combi Gas Boiler
- 35kW
- Band rating: A
- ERP rating: A
Greenstar 8000 Style 50KW
- Combi Gas Boiler
- 35kW
- Band rating: A
- ERP rating: A
Greenstar 9I
- System Gas Boiler
- 9.2kW
- Band rating: A
- ERP rating: A
Greenstar Fs 30CDI
- Regular Gas Boiler
- 30kW
- Band rating: A
- ERP rating: A
Greenstar Fs 42CDI
- Regular Gas Boiler
- 41kW
- Band rating: A
- ERP rating: A
Greenstar Highflow 440CDI
- Combi Gas Boiler
- 29.2kW
- Band rating: A
- ERP rating: A
Greenstar Highflow 550CDI
- Combi Gas Boiler
- 30.6kW
- Band rating: A
- ERP rating: A