Worcester Bosch 2000 25kW Combi Boiler with 15mm Scale Reducer

The Worcester Bosch 2000 25kW Combi Boiler with 15mm Scale Reducer is a compact, energy-efficient heating package designed to deliver dependable central heating and instant mains-pressure hot water for apartments and small to medium-sized homes. Supplied with a 15mm Scale Reducer, this complete solution helps protect the boiler from limescale build-up in hard water areas while maintaining long-term performance and efficiency.

As part of the trusted Worcester Bosch Greenstar 2000 range, this combi boiler combines Quiet Mark-certified operation, intelligent condensing technology, and the innovative QuickTap® hot water function. Its compact cupboard-fit design, high efficiency, and installer-friendly features make it an excellent choice for both replacement boilers and new heating installations.

Key Features

• 25kW Natural Gas Combination (Combi) Boiler
• Includes 15mm Scale Reducer
• Fuel Type: Natural Gas
• Instant mains-pressure hot water
• No separate hot water cylinder required
• ErP A Rated efficiency
• Up to 94% efficiency
• Quiet Mark certified
• QuickTap® hot water pre-heat function
• Stainless steel primary heat exchanger
• Compact cupboard-fit design
• EasyControl compatible
• High modulation ratio (down to 3kW)
• Digital controls with simple user interface
• 7-Year manufacturer's warranty (subject to registration and installation terms)

Ideal for Small to Medium Homes

The Worcester Bosch 2000 25kW Combi Boiler is ideal for apartments, flats, and small to medium-sized homes with one bathroom. As a combi boiler, it provides both central heating and domestic hot water directly from the mains, eliminating the need for a separate hot water cylinder or cold water storage tank.

The included 15mm Scale Reducer helps minimise limescale build-up, making this package particularly suitable for properties located in hard water areas.

Efficient Heating & Instant Hot Water

Delivering 25kW domestic hot water output and a 10.0 litres per minute flow rate (Δ35°C), the Greenstar 2000 provides reliable hot water for showers, taps, and everyday household use while maintaining efficient central heating performance.

Its innovative QuickTap® technology pre-heats the plate heat exchanger, reducing waiting time for hot water while helping minimise water waste.

Compact Design & Easy Installation

Designed for modern homes, the Worcester Bosch Greenstar 2000 features a slim cupboard-fit design that simplifies installation without compromising performance.

Dimensions

• Height: 724mm
• Width: 400mm
• Depth: 300mm

The included 15mm Scale Reducer provides additional protection for the boiler by helping reduce the effects of limescale, improving long-term system reliability.

Advanced Energy Efficiency

Rated ErP A for both heating and hot water efficiency, the Greenstar 2000 delivers up to 94% efficiency, helping reduce energy consumption and lower household heating bills.

Its intelligent condensing technology and wide modulation range ensure efficient operation throughout the year while maintaining consistent comfort.

Smart Heating Control Compatibility

The boiler is fully compatible with Worcester Bosch EasyControl, allowing homeowners to manage heating remotely, improve temperature control, and maximise energy efficiency through intelligent scheduling and modulation.

Reliable Performance & Easy Maintenance

Built with Worcester Bosch engineering, the Greenstar 2000 features a durable stainless steel heat exchanger, removable side panels for easier servicing, and installer-friendly pipe connections that help reduce installation time.

Its Quiet Mark certification also ensures exceptionally quiet operation, making it suitable for installation in kitchens and living spaces.

Warranty & Peace of Mind

The Worcester Bosch 2000 25kW Combi Boiler with 15mm Scale Reducer includes a 7-Year manufacturer's warranty (subject to installation and registration requirements), giving homeowners confidence in the long-term quality and reliability of their heating system.

Why Choose the Worcester Bosch 2000 25kW Combi Boiler with 15mm Scale Reducer?

• Complete boiler and scale protection package
• Efficient 25kW combi boiler
• Natural Gas compatible
• 10.0 L/min domestic hot water flow rate
• Includes 15mm Scale Reducer
• Quiet Mark certified
• QuickTap® hot water technology
• EasyControl compatible
• Compact cupboard-fit design
• 7-Year manufacturer's warranty