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Worcester Greenstar 25Si Compact ERP Gas Combi Boiler 7733600050
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Worcester Greenstar 25Si Compact Gas Combi Boiler 7733600050 ERP
Worcester Greenstar 25Si hung on kitchen wall
Worcester Greenstar 25Si Compact Gas Combi Boiler 7733600050 ERP
Worcester Greenstar 25Si hung on kitchen wall

Worcester Greenstar 25Si Compact ERP Gas Combi Boiler 7733600050

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Item Code: 112957
Expected Delivery:  1 - 2 working days
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Need Help?  0800 181 4488
Ex. VAT £1,028.40 Inc VAT

Additional Information

Brand Worcester
Lead Time 1 - 2 working days
Boiler Type Combi
Fuel Type Natural Gas
Heating Output Range 24 - 29
DHW Flow Rate 10.2
DHW Flowrate Range < 12
Flue None
Programmer None
Output BTU/H 85,000
Height (mm) 690
KW Output 24
Width (mm) 390
Depth 280
Warranty 5 Years
Manufacturer Part No: 7733600050


Worcester 25Si Compact ERP

With a central heating output of 24kW, the 25Si Compact is an ideal hot water and central heating solution and is able to service smaller properties with up to 3 bedrooms and a single bathroom - typically a flat, bungalow or small house.

  • Central Heating Output: 24kW
  • Hot Water Flow Rate: 10.2 litres per minute

The biggest innovation surrounding the new Si Compact range is the size of the boilers themselves. With dimensions 690mm (h) x 390mm (w) x 280mm (d), the 25Si Compact is the smallest combi boiler to have ever been produced by Worcester Bosch. It’s so small that it can be installed within most kitchen cupboard spaces, making it fit seamlessly into your home and easy to keep our of sight.

Despite the compact dimensions, the 25Si gives you fantastic performance levels and the reliability you would come to expect from Worcester themselves. With its SEDBUK A-Rating, the 25si is able to achieve efficiency levels of over 90%, helping you to operate your boiler with reduced annual energy bills.

  • Gas Combination Boiler (Heating + Hot Water)
  • 90.5% efficiency levels (SEDBUK A-Rating)
  • Compact dimensions
  • Jig & 7 pre-plumb connections make it possible to pre-plumb without the boiler being mounted on the wall, allowing quick installation
  • Built in LCD display for current operation status & fault diagnosis
  • Lightweight (32.9kg)
  • EMS-BUS compatibility for use with Worcester Intelligent Controls series
  • 10 year warranty on primary heat exchange, 5-year anti-scale warranty on domestic hot water heat exchanger (subject to terms and conditions).
  • 5 Year warranty on Greenstar Gas Boiler as standard (terms and conditions apply)

The 25Si Compact has now been improved to include new ErP compliant pump, bringing it in line for new legislation for new boilers and other heating appliances. ErP regulations are being put in place in an effort to reduce carbon emissions across the UK, and a new A-rated combi boiler is the perfect way to comply with this legislation.

This Combi Boiler will need a flue, as one is not supplies as standard. You can add any additional flues, extensions and controllers to your basket separately (check out the right hand side of this page for popular choices) or browse our range of ‘Boiler packs’ to purchase a Combi boiler, flue and timer at a discounted price. 

Order your cheap Worcester 25Si Combi Boiler from Direct Heating Supplies for quick delivery and a great low price.