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WORCESTER BOSCH

WORCESTER BOSCH

The Greenstar 4000 25kW Combination Boiler is perfect for small to medium sized homes with one bathroom. It features a modern new design, a full colour text display that is easy to use and it is exceptionally quiet too. The Greenstar 4000 has a wide power range to meet all of your heating and hot water needs, whilst doing so efficiently.

Features:

  • Wide power range helps to reduce gas consumption and lower energy bills.

  • Innovative ’Quick Tap’ water saving function helps you reduce water waste.

  • The modern new design comes with an easy to use colour display.

  • Operates extremely well in low water pressure areas, ensuring powerful and warm showers.

  • One of the quietest combi boilers available, making it easy to live with.

  • Features wireless connectivity with the Bosch EasyControl.

  • Instantaneous hot water, always available.

  • Suitable for small to medium homes.

  • 7 Years manufacturer warranty.

 

Technical data:

  • Brand - Worcester Bosch-Bosch

  • Range - Greenstar 4000

  • Product Type - Gas Combi Boiler

  • Colour - White

  • Depth - 310mm

  • Width - 400mm

  • Height - 724mm

  • ErP Rating - A

  • Output - 25kW

  • Flow Rate - 9ltr/min

  • Tech Specs

    Models & Outputs (CH / DHW)

    • 28 kW – 26.1 kW / 28.0 kW; 12.1 l/min

    • 33 kW – 30.4 kW / 32.0 kW; 14.1 l/min

    • 38 kW – 34.8 kW / 36.9 kW; 15.4 l/min

     

    Efficiency & Warranty

    • ~93–94% ErP A‑rated

    • Standard 10‑year parts & labour; 13 years with PremierPack

     

    Size & Weight

    • 712 × 440 × 268 mm; 31–33 kg (dry)

     

    Key Features

    • Stainless steel heat exchanger

    • Grundfos pump, weather compensation, OpenTherm & Alpha BUS compatible

City & Guilds Qualified
Level 2 & 3 plumbing and heating certification.
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Gas Safe Registered
Our engineers are
fully qualified.
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Compliant with UK water safety standards.
Water Regulations Certified
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24/7 Support
Round-the-clock
customer service.
Fixed Pricing
No hidden costs
or surprises.

© 2025 by WeFitBoilers LTD.

WeFit Boilers Ltd is an Introducer Appointed Representative (Financial Services Register No. 1057107) of Phoenix Financial Consultants Limited (Phoenix). Phoenix is a credit broker, not a lender. Phoenix is authorised and regulated by the Financial Conduct Authority (FRN: 539195), and offers finance from its panel of lenders. All finance subject to status and credit checks.

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