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Worcester Bosch Greenstar 24Ri 24kW Heat Only Boiler

Product Description

The Worcester Bosch Greenstar 24Ri Heat Only Boiler is a compact, high-efficiency solution designed for homes with stored hot water systems. Part of the trusted Greenstar Ri range, this model delivers reliable heating performance while maintaining a small footprint ideal for installation inside kitchen cupboards.

With a powerful 24kW output, this boiler is suitable for a wide range of household sizes. Its lightweight design (just 22.6kg) makes installation easier, while the built-in heating temperature control ensures efficient and precise operation.

Engineered for sustainability, the Greenstar 24Ri features low NOx and CO₂ emissions and is compatible with Greenskies solar panels, helping to reduce environmental impact. When paired with a compatible Worcester unvented cylinder, it provides a complete and highly efficient heating system.

Why Customers Should Buy This Product

• Compact cupboard-fit design ideal for space-saving installations
• 24kW output suitable for medium-sized homes
• Lightweight (22.6kg) for easier installation
• A-rated efficiency for lower energy bills
• Low NOx & CO₂ emissions for environmentally friendly operation
• Compatible with solar systems (Greenskies)
• Flexible flue options for easier siting
• Reliable performance from Worcester Bosch
• Up to 8-year warranty when installed with a Greenstar System Filter

Key Specifications

• Brand: Worcester Bosch
• Range: Greenstar Ri
• Product Type: Heat Only Boiler
• Output: 24kW
• Fuel Type: Natural Gas
• ERP Rating: A
• NOx Class: Class 6
• Mounting Type: Wall Mounted

Dimensions & Weight:

• Height: 600 mm
• Width: 370 mm
• Depth: 270 mm
• Weight: 22.6 kg

Performance:

• Heat Output: 24 kW
• BTU Output: 86,835 BTU
• CH Condensing Max Output: 25.45 kW
• Noise Level: 50 dB

Flue Options:

• Max Vertical (125mm): 15 m
• Max Vertical (100mm): 6.4 m
• Max Horizontal (125mm): 13 m
• Max Horizontal (100mm): 4.6 m

Features:

• Built-in heating temperature control
• Multi-directional flueing
• Digital display
• Solar compatible

Warranty:

• Standard: 7 Years
• Extended: Up to 8 Years (with Greenstar System Filter)

What’s in the Box

• 1 x Heat Only Boiler Unit
• Installation Instructions

Important Information

• Heat only boiler – requires hot water cylinder and cold water tank
• No domestic hot water flow directly from the boiler
• Designed for sealed or open-vented heating systems