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Worcester Greenstar System I


IITC CODE Model Outputs:
7716130143 12kW      ( 12i )
7716130168 15kW      ( 15i )
77161304170 18kW      ( 18i )
7716130144 24kW      ( 24i )


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.

For further peace of mind, every boiler in Worcester’s Greenstar gas and LPG condensing boiler range has been awarded a Which? Best Buy accreditation.

10 year guarantee on primary heat exchanger.

Central heating output: 12kW

Efficiency 90.1% A

The Greenstar 12i System is 90.1% efficient and is in the highest possible official efficiency category, SAP 2005 seasonal efficiency rating.

Features & Benefits

  • A rated efficiency (SAP 2005 seasonal efficiency)
  • 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




Greenstar Gas Boilers
User Manual