Worcester-Bosch Ri range of conventional gas boilers

Conventional Boilers



High efficiency Ri Conventional Gas Boilers and accessories






The Greenstar Ri boiler series is part of a market-leading range of energy-saving condensing gas-fired boilers from Worcester. They can cut heating and hot water bills by between 15-20% - and they’re up to 30% cheaper to run than an older boiler.

Greenstar condensing boilers deliver this energy-saving performance by recycling exhaust gases to extract and re-use latent heat - a highly efficient use of energy which also significantly reduces carbon dioxide in the atmosphere.

  • SEDBUK* A-rated efficiency - environmentally friendly
  • 12kW, 15kW, 18kW and 24kW domestic hot water (DHW) output
  • Compact dimensions - fits within kitchen cupboard
  • Compatible with Worcester’s Greenskies solar water heating system
  • For ease of installation, flow and return pipes can be plumbed in from above or below the boiler
  • Low NOx and CO2 emissions - environmentally friendly
  • 2 year** warranty with 10 year** warranty on primary heat exchanger
Ri Conventional Boilers:
Greenstar 24Ri Conventional      
Greenstar 18Ri Conventional      
Greenstar 15Ri Conventional      
Greenstar 12Ri Conventional      
STD Horizontal Flue      
Vertical Flue      
Mechanical Timer      
Digital Timer      















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