Worcester Greenstar 25Si Compact Combination Boiler Natural Gas

Worcester Greenstar 25Si Compact Combination Boiler Natural Gas

The product(s) listed on this page have been superseded by:

Worcester Greenstar 25Si Compact Combination Boiler Natural Gas ErP 7733600050

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Product Specification


Product Code 126618
MPN 7716130230
EAN 4051516683610
Type Combination
Warranty (Years) 5
Width (mm) 390
Height (mm) 690
Depth (mm) 280
Weight (Kg) 32.9
Output (Kilowatts) 25
Flow Rate (L/min) 10.2
Fuel Natural Gas
Mounting Wall Mounted
Worcester Greenstar Boiler Brochure

Product Description


Worcester Greenstar 25Si Compact Combi Boiler NG

High Efficiency 25kW Condensing Combi Boiler

The Greenstar gas-fired Si Compact is the successor to the Greenstar Si combi boiler.

Ideal for apartments and small to medium sized properties with one bathroom, it has a host of performance-enhancing features, including the revolutionary WB7 heat exchanger which enables the appliances to deliver DHW flow rates of 10.2 l/min despite their compact size.

The Greenstar Si Compact Combi Boiler has been designed to make installation and commissioning easier and quicker and comes supplied with a unique wall-mounting jig which enables the installer to quickly pre-plumb all seven pipe connections without the boiler being on the wall.

  • A rated efficiency (SEDBUK 2005 value)
  • Can be installed in a standard kitchen cupboard without the need for ventilation
  • Split jig design for optimum lift weight (32.9kg)
  • The expansion vessel has a simple drop lock mechanism that connects directly onto the hydraulic unit
  • Ability to pre-plumb all 7 connections without the boiler being on the wall – gas, water, PRV & condensate connections
  • Robust wall mounting frame provided as standard allows space for pipes behind the boiler
  • LCD boiler display for operation status, commissioning features and diagnostics
  • EMS-BUS compatibility enables use with Worcester intelligent controls series
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