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Worcester Bosch Greenstar i System Boiler

The Worcester Bosch Greenstar i System boiler has been designed for the heating demands of modern households. It is available in four heating outputs, and runs with high efficiency levels for fuel economy to cut energy bills and reduce carbon emissions. Average prices start from around £600, excluding VAT and installation costs.

The Greenstar i System boiler works with heating systems where a hot water storage cylinder is used. It is highly recommended for larger properties with increased hot water requirements. It also minimises the problem of low mains water pressure and will provide instant hot water to multiple taps easily. With four different heat output models, there’s an ideal Greenstar i system boiler for most mid to larger sized properties.

It is also compatible with all of Worcester’s digital and wireless programmers, room thermostats and intelligent controls; enabling its temperature levels to be adjusted effortlessly for greater comfort and fuel savings.

The Greenstar i System boiler is made from robust aluminum and silicon, and has compact hydraulics with proven efficiency. With a 2-year warranty and Bosch’s trusted brand, this boiler offers you both peace of mind and reliability.

Worcester Bosch Greenstar i System Boiler

ModelTypeDimensionsMaximum Flow RateOutputEfficiency RatingTypical Price
Greenstar 12i SystemSystemH – 710 mm
W – 400 mm
D – 330 mm
N/A12 kWA 90% and above£824.13
Greenstar 15i SystemSystemH – 710 mm
W – 400 mm
D – 330 mm
N/A15 kWA 90% and above£853.78
Greenstar 18i SystemSystemH – 710 mm
W – 400 mm
D – 330 mm
N/A18 kWA 90% and above£888.72
Greenstar 24i SystemSystemH – 710 mm
W – 400 mm
D – 330 mm
N/A24 kWA 90% and above£930.08
Key Features & Benefits
SEDBUK A with 90.1% NG fuel efficiencyEnergy efficiency
NOx Class 5Environmentally friendly
WB3 series heatcell – robust cast aluminium/silicon constructionManufacture quality
Available in Natural Gas and LPGLPG compatible
Compatible with Greenskies solar panelsAlternative energy option
Compact dimensions, modern design with wall mounting frame that hides pipework.Siting flexibility
Compatible with all Worcester digital and wireless programmers and room thermostats as well as new generation intelligent controls.User comfort Boiler reliability
Fault finding diagnosticsEasy to service
With the Heatronic III control system for sophisticated boiler managementEnergy efficiency Economy
Domestic hot water temperature controlConvenience
2 year Warranty and 10 year guarantee on primary heat exchanger.Peace of mind

The Greenstar i system boiler is both fuel efficient and economical to run. It is powerful enough to meet high hot water and heating demands, yet its compact dimensions enable it to be fitted into properties with space restrictions.

Investing in a new boiler is not an everyday decision, therefore we advise you to shop around and compare prices before spending your money. A good place to start is by getting a few quotes from local boiler installers and a national installer. This will ensure you make an informed choice.

For your own safety and your heating system’s well being, make sure your engineer is Gas Safe Registered.


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