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Greenstar 12i System

Mother and son with Greenstar boiler in background
Greenstar i System boiler


Image of Which 2013 (product pages)In the 2014/15 report and for the fourth year running the entire range of Worcester Greenstar gas boilers have been awarded Which? Best Buy, the only boiler manufacturer to have been awarded Best Buy status*.

Greenstar i System boilers are a good option for small to medium sized properties. They have compact dimensions which means that they can be installed in a variety of places.

The Greenstar i System boilers are used with heating systems that include stored hot water in a cylinder.

These boilers are also compatible with a wide range of optional digital controls.

Image of 5 year guarantee logo (with extra padding) 5 year boiler guarantee as standard (terms and conditions apply)

10 year guarantee on primary heat exchanger.

Central heating output: 12kW

*Which? annual boiler report September 2014


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Features and benefits

  • A rated efficiency (SAP 2005 seasonal efficiency)
  • 5 year boiler guarantee as standard (terms and conditions apply)
  • 2 year guarantee with 10 year guarantee on primary heat exchanger (subject to terms and conditions)
  • Compact dimensions – space saving and siting flexibility
  • Compatible with Greenskies solar water heating
  • Metal wall mounting frame with pipes behind - no exposed pipework

  • Low NOx and CO2 emissions - environmentally friendly

Product brochure

Greenstar gas boilers brochure image

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As a manufacturer, we supply through trade rather than directly to the public which is why we are unable to publish prices on our website.

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