Worcester Bosch Greenstar 25i

Type Combi boiler
Fuel Gas
Efficiency Rating A
Manufacturer-backed warranty through HomeServe Up to 10-years**
Weight 31.7kg
Width x Height x Depth 400mm x 710mm x 330mm
Max kW Output 25kw
Flow rate 9l/min


The Worcester Bosch Greenstar 25i combi boiler is designed to provide homeowners with a compact, easy-to-use, energy-efficient heating solution. A part of one of the brand’s most popular ranges, this Worcester Bosch combi boiler has a variety of key features and additions to help you heat your home effectively and efficiently.



Product description

The Worcester Bosch 25i combi boiler could be a great choice for smaller homes with 1-2 bedrooms, up to 10 radiators and 1 bathroom. If you’re looking for a boiler that’s designed to be energy-efficient and reliable, the 25i Worcester Bosch combi boiler could be an ideal option for you.

A-rated for efficiency, this boiler is manufactured to provide homes with effective central heating without using excessive fuel. Consequently, having one of these boilers installed could see a decrease in your energy bills by potentially lowering your household’s amount of fuel wastage. The 25kW combi boiler’s compact dimensions make it a potentially suitable fit for most cupboard spaces, and its user-friendly controls are designed to make setting your heating to your needs a quick and easy task.

We could install the 25i into your home with up to 10-years' manufacturer-backed warranty for added peace of mind**.


Ratings & Reviews

Worcester Bosch’s Greenstar 25i combi boiler has been recognised within the industry for its superb performance and abilities on a number of occasions. Ratings it has received include:

  • 5 star efficiency rating
  • 5 star brand reliability
  • 5 star brand customer score
  • 5 star engineer recommendation
  • Its range has been awarded a Which? best buy on numerous occasions

*The above information was sourced from Which?


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Similar Alternative Models

Here at HomeServe, we supply a range of boilers that are all A-rated and designed to provide you with central heating that matches your requirements. As well as the Worcester Bosch 25i model, the following similar boilers could be suitable:

1. Ideal Logic+ Combi Boiler 24kW

  • Compact - designed to be fit into cupboard spacing
  • Large digital display
  • Energy Saving Trust endorsed

2. Worcester Bosch 30i Combi

  • The 30i has the exact same features and dimensions as the 25i, just a higher output to potentially suit slightly larger homes with higher heating and hot-water demands.
  • Countless winner of Which? Best Buy award
  • Wide selection of controls for greater comfort and economy

3. Worcester Bosch Greenstar 25Si Compact

  • User-friendly display
  • Frost protection
  • Compact dimensions

Do you think you could benefit from having a Worcester Bosch combi boiler installed in your home? If so, try our free online quote tool to move forward with your installation.


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** Subject to an annual service at the customer's expense. Warranty extension from 5-years to 10-years only available on Worcester Bosch and Ideal gas boilers and may be subject to an additional charge.