Worcester Bosch 12Ri Heat Only Boiler Including Flue & 15mm Scale Reducer

The Worcester Bosch 12Ri Heat Only Boiler Including Flue & 15mm Scale Reducer is a compact, highly efficient heating package designed for homes with a traditional open-vent or conventional heating system. Supplied with a horizontal flue kit and a 15mm Scale Reducer, this complete solution provides reliable central heating while helping to reduce limescale build-up in hard water areas, extending the lifespan and efficiency of your heating system. With its space-saving cupboard-fit design and trusted Worcester Bosch engineering, the Greenstar 12Ri is an ideal replacement for older regular boilers.

Part of the renowned Worcester Bosch Greenstar Ri range, the 12Ri is designed to operate alongside a separate hot water cylinder and cold water storage tank. Its quiet operation, flexible installation options, and compatibility with Worcester Bosch heating controls make it an excellent choice for upgrading traditional heating systems while retaining existing pipework and hot water storage.

Key Features

• 12kW Heat Only (Regular) Boiler
• Includes Horizontal Flue Kit
• Includes 15mm Scale Reducer
• Fuel Type: Natural Gas
• Designed for open-vent and conventional heating systems
• Requires a separate hot water cylinder and cold water storage tank
• ErP A Rated for heating
• Up to 92% seasonal efficiency
• Compact cupboard-fit design
• Quiet operation
• Multi-directional flue compatibility
• Compatible with Worcester Bosch EasyControl
• Solar compatible
• Simple fascia-mounted heating temperature controls
• Up to 10-Year manufacturer's warranty (subject to installation, registration, and manufacturer's warranty terms)

Ideal for Traditional Heating Systems

The Worcester Bosch 12Ri Heat Only Boiler is ideal for smaller homes, apartments, and well-insulated properties with an existing conventional heating system incorporating a separate hot water cylinder and cold water storage tank. It provides an efficient replacement for older heat only boilers while allowing homeowners to retain their current heating system layout.

The included 15mm Scale Reducer helps minimise limescale formation, making this package particularly suitable for homes located in hard water areas.

Reliable Central Heating Performance

With a 12kW central heating output, the Greenstar 12Ri delivers reliable, consistent heating for smaller properties. As a Heat Only (Regular) Boiler, it is designed exclusively for central heating and works alongside a separate hot water cylinder to provide stored domestic hot water.

Its advanced condensing technology maximises seasonal efficiency while reducing gas consumption and helping lower household heating costs.

Compact Design

Designed to fit neatly inside a standard kitchen cupboard, the Greenstar 12Ri offers exceptional installation flexibility without compromising performance.

Dimensions

• Height: 600mm
• Width: 390mm
• Depth: 270mm

The included horizontal flue and 15mm Scale Reducer provide a complete installation package while helping protect the boiler from limescale and maintaining long-term efficiency.

Advanced Energy Efficiency

Rated ErP A with 92% seasonal heating efficiency, the Greenstar 12Ri uses advanced condensing technology to maximise heating performance while reducing energy consumption and carbon emissions.

The boiler is also solar compatible, providing additional flexibility for homeowners planning future energy-saving upgrades.

Smart Heating Control Compatibility

The Greenstar 12Ri is compatible with Worcester Bosch EasyControl and other Worcester heating controls, allowing homeowners to optimise comfort, improve efficiency, and manage heating schedules more effectively.

Reliable Performance & Easy Maintenance

Built to Worcester Bosch's renowned quality standards, the Greenstar 12Ri features a durable and installer-friendly design with straightforward controls and convenient servicing access.

Its compact footprint, flexible flue options, and dependable construction make installation simple for both replacement projects and new heating system upgrades.

Warranty & Peace of Mind

The Worcester Bosch 12Ri Heat Only Boiler Including Flue & 15mm Scale Reducer includes up to a 10-Year manufacturer's warranty when installed and registered in accordance with Worcester Bosch's warranty requirements, giving homeowners long-term confidence and dependable after-sales support.

Why Choose the Worcester Bosch 12Ri Heat Only Boiler Including Flue & 15mm Scale Reducer?

• Complete boiler, flue, and scale protection package
• Efficient 12kW heat only boiler
• Natural Gas compatible
• Designed for traditional heating systems
• Includes Horizontal Flue
• Includes 15mm Scale Reducer
• Compact cupboard-fit design
• Solar compatible
• Compatible with Worcester Bosch EasyControl
• Up to 10-Year manufacturer's warranty