Worcester Bosch Greenstar 18Ri Regular Boiler ErP

Worcester Bosch Greenstar 18Ri Regular Boiler ErP

£935.32 excl. VAT

18kW ErP Condensing Conventional Boiler

The Worcester Greenstar Ri regular boilers are the smallest of the Worcester condensing boilers – they can even be installed within a standard kitchen cabinet.

These boilers are available in 6 different outputs which means that there’s one to suit small, medium and larger properties. The Greenstar Ri Regular boilers are used with a heating system that includes stored hot water in a cylinder.

The Greenstar Ri boilers have a fascia-mounted heating temperature control knob and neon operational status indicator.

  • A rated efficiency (SAP 2005 seasonal efficiency)
  • Compact dimensions – can fit within kitchen cupboard
  • Built-in heating temperature control
  • Compatible with Greenskies solar panels
  • Low NOx and CO2 emissions – environmentally friendly
  • Multi-directional fluing for siting flexibility
  • For ease of installation, flow and return pipes can be plumbed in from above or below the boiler
  • Lift weight: just 22.6kg – the lightest boiler in its class


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Worcester Bosch Greenstar 18Ri Regular Boiler ErP

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Technical Details

Greenstar 12Ri Greenstar 15Ri Greenstar 18Ri Greenstar 24Ri
Part number 7 733 600 074 7 733 600 072 7 733 600 070 7 733 600 068
ErP Efficiency Rating
ErP Data Sheet ErP Data Sheet ErP Data Sheet ErP Data Sheet ErP Data Sheet
Solar Compatible  Yes  Yes  Yes  Yes
Wave Compatible  No  No  No  No
Control Options  No  No  No  No
Dimensions (mm) height x width x depth 600 x 390 x 270 600 x 390 x 270 600 x 390 x 270 600 x 390 x 270
Clearances (mm) above, sides, below and front 30, 5, 200, 600 (fixed surface) & 20 (cupboard door) 30, 5, 200, 600 (fixed surface) & 20 (cupboard door) 30, 5, 200, 600 (fixed surface) & 20 (cupboard door) 30, 5, 200, 600 (fixed surface) & 20 (cupboard door)
Maximum horizontal flue (mm) 4600 4600 4600 4600
Maximum vertical flue (mm) 6400 6400 6400 6400
Ingress protection rating 20 20 20 20
Wall mounting jig supplied  Yes  Yes  Yes  Yes
Central heating output (kW) 12 15 18 24
Minimum inlet pressure (bar) N/A N/A N/A N/A
NOx emissions (mg/kWh) 35 54 76 59
Lift weight (kg) 22.6 22.6 22.6 22.6

*The Condensesure Siphon has been proven to be effective at preventing frozen condensate at -15°C for a sustained period of 48 hours. 32mm pipework must be used and should not exceed 3 metres in length


worcester bosch logo 1

Worcester, Bosch Group (commonly referred to as Worcester or Worcester-Bosch) is a United Kingdom based domestic heating and hot water products manufacturer. The company was founded in 1962 by Cecil Duckworth as Worcester Engineering Co Ltd in Worcester, England. After changing its name to Worcester Heat Systems Ltd, in 1992 the company was acquired by Robert Bosch GmbH, adopting the new name of Worcester, Bosch Group.

The headquarters is based in Warndon. The company employs more than 2,000 people across the headquarters and manufacturing plants in Worcester and Clay Cross, Derbyshire, including a network of over 300 service engineers and over 80 technically trained field sales managers. Join our ZERO Home Bills CommunityBEST Products from the BEST Brands at the BEST Prices on ZEROhomebills.com by Solaranna. 

Buy now the Worcester Bosch Greenstar 18Ri Regular Boiler ErP!

Additional information

Weight 22.6 kg
Dimensions 39 × 60 × 27 cm
Product Category

Boilers, Gas Boilers, HEATING AND COOLING, Regular Boilers


Bosch, Worcester Bosch

Rated Power (W/kW)

18 kW

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