Not sure which boiler you need?
Not sure which boiler you need?

Worcester Bosch Boilers

Worcester Bosch Boiler Replacement & Installation

Worcester Bosch Boilers

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
  • Warranty: 7 years
 2000 30KW
  • Combi Gas Boiler
  • 20kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Greenstar 12RI
  • Regular Gas Boiler
  • 12kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Greenstar 18RI
  • Regular Gas Boiler
  • 18kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Greenstar 21RI
  • Regular Gas Boiler
  • 21kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Greenstar 24RI
  • Regular Gas Boiler
  • 24kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Greenstar 27RI
  • Regular Gas Boiler
  • 27kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Greenstar 30RI
  • Regular Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 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
  • Warranty: 12 years
 Greenstar 8000+ 30KW
  • Regular Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 8000+ 32KW
  • Combi Gas Boiler
  • 32kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 8000+ 35KW
  • System Gas Boiler
  • 35kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 8000+ 35KW
  • Regular Gas Boiler
  • 35kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 8000+ 36KW
  • Combi Gas Boiler
  • 36kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 8000+ 40KW
  • Regular Gas Boiler
  • 40kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 8000+ 40KW
  • Combi Gas Boiler
  • 40kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 8000+ 45KW
  • Regular Gas Boiler
  • 45kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 8000+ 45KW
  • Combi Gas Boiler
  • 45kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 8000+ 50KW
  • Regular Gas Boiler
  • 50kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 8000+ 50KW
  • Combi Gas Boiler
  • 50kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 8000+ Style 32KW
  • Combi Gas Boiler
  • 32kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 8000+ Style 36KW
  • Combi Gas Boiler
  • 36kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years

Other Boilers

GB162 100KW
  • System Gas Boiler
  • 99.5kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 GB162 50KW
  • System Gas Boiler
  • 49.9kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 GB162 65KW
  • System Gas Boiler
  • 69.5kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 GB162 85KW
  • System Gas Boiler
  • 84.5kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Greenstar 12I
  • System Gas Boiler
  • 12.2kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Greenstar 15I
  • System Gas Boiler
  • 15.3kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Greenstar 15RI
  • Regular Gas Boiler
  • 15kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Greenstar 18I
  • System Gas Boiler
  • 18.4kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Greenstar 2000 25 Kw
  • Combi Gas Boiler
  • 20kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 6 years
 Greenstar 2000 30 Kw
  • Combi Gas Boiler
  • 20kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 6 years
 Greenstar 21I
  • System Gas Boiler
  • 21.6kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Greenstar 24I
  • System Gas Boiler
  • 24.6kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Greenstar 24I Junior
  • Combi Gas Boiler
  • 24kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 7 years
 Greenstar 25I
  • Combi Gas Boiler
  • 24kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Greenstar 25SI Compact
  • Combi Gas Boiler
  • 24kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Greenstar 27CDI
  • Combi Gas Boiler
  • 27kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 5 years
 Greenstar 27I
  • System Gas Boiler
  • 27kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Greenstar 28CDI Compact
  • Combi Gas Boiler
  • 24kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Greenstar 28I Junior
  • Combi Gas Boiler
  • 28kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Greenstar 29CDI Classic
  • Combi Gas Boiler
  • 29kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Greenstar 30CDI
  • Combi Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 5 years
 Greenstar 30CDI Classic
  • System Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Greenstar 30CDI Classic
  • Regular Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Greenstar 30I
  • System Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Greenstar 30I
  • Combi Gas Boiler
  • 24kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Greenstar 30SI Compact
  • Combi Gas Boiler
  • 24kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Greenstar 32CDI Compact
  • Combi Gas Boiler
  • 24kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Greenstar 34CDI Classic
  • Combi Gas Boiler
  • 34kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Greenstar 35CDI Classic
  • System Gas Boiler
  • 35kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Greenstar 36CDI Compact
  • Combi Gas Boiler
  • 24kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Greenstar 37CDI
  • Combi Gas Boiler
  • 32kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 5 years
 Greenstar 38CDI Classic
  • Combi Gas Boiler
  • 38kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Greenstar 40CDI Classic
  • Regular Gas Boiler
  • 40kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Greenstar 42CDI
  • Combi Gas Boiler
  • 42kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 5 years
 Greenstar 42CDI Classic
  • Combi Gas Boiler
  • 42kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Greenstar 8000 Style 30KW
  • System Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 8000 Style 35KW
  • System Gas Boiler
  • 35kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 8000 Style 40KW
  • Combi Gas Boiler
  • 35kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 8000 Style 45KW
  • Combi Gas Boiler
  • 35kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 8000 Style 50KW
  • Combi Gas Boiler
  • 35kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Greenstar 9I
  • System Gas Boiler
  • 9.2kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 8 years
 Greenstar Fs 30CDI
  • Regular Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Greenstar Fs 42CDI
  • Regular Gas Boiler
  • 41kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Greenstar Highflow 440CDI
  • Combi Gas Boiler
  • 29.2kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Greenstar Highflow 550CDI
  • Combi Gas Boiler
  • 30.6kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years

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