Greenstar Ri (12kW to 24kW) Regular Boilers UK

Compact – Fits inside a kitchen cupboard

Quality – Bosch quality for your home

Added efficiency – Compatible with solar panels for extra efficiency

Estimated Cost

Technical Specifications

Greenstar 12Ri (NG)

ErP Efficiency Rating: A

Fuel Type: Natural Gas (NG)

Control Options: EasyControl compatible

Solar Compatibility: Yes

Central Heating Output: 12 kW

Dimensions (HxWxD): 600 x 390 x 270 mm

ErP Data Sheet: Available
💡 A compact entry-level boiler, ideal for smaller homes with low heating demand.

Greenstar 15Ri (NG)

ErP Efficiency Rating: A

Fuel Type: Natural Gas (NG)

Control Options: EasyControl compatible

Solar Compatibility: Yes

Central Heating Output: 15 kW

Dimensions (HxWxD): 600 x 390 x 270 mm

ErP Data Sheet: Available
💡 Efficient and reliable, suited for small to medium homes.

Greenstar 21Ri (NG)

ErP Efficiency Rating: A

Fuel Type: Natural Gas (NG)

Control Options: EasyControl compatible

Solar Compatibility: Yes

Central Heating Output: 21 kW

Dimensions (HxWxD): 600 x 390 x 270 mm

ErP Data Sheet: Available
💡 A mid-range option, offering stronger heating for medium-sized properties.

Greenstar 24Ri (NG)

ErP Efficiency Rating: A

Fuel Type: Natural Gas (NG)

Control Options: EasyControl compatible

Solar Compatibility: Yes

Central Heating Output: 24 kW

Dimensions (HxWxD): 600 x 390 x 270 mm

ErP Data Sheet: Available
💡 High-output model, perfect for larger homes needing consistent heating performance.

High Efficiency (A-rated)

Compact Utility Design

Wide Output Range

Renewable Ready

How it Works – Simple, Fast & Hassle-Free

Answer a few quick questions about your home and energy needs.

Choose the perfect renewable solution from tailored options we recommend.

Expert installers ensure a fast, professional, and reliable setup.

How long do Worcester Bosch boilers last?

With regular servicing and maintenance, a Worcester boiler typically lasts 12–15 years. Some can last even longer if well maintained.

What types of boilers does Worcester Bosch offer?

Worcester Bosch manufactures:

Combi Boilers – For instant hot water and heating, no tank required.
System Boilers – Require a cylinder for hot water storage.
Regular (Conventional) Boilers – Work with tanks and are ideal for older systems or larger properties.

How energy efficient are Worcester Bosch boilers?

Most modern Worcester boilers have an A-rated ErP efficiency (over 90%). This helps reduce energy bills and carbon footprint compared to older G-rated boilers.

How often should I service a Worcester Bosch boiler?

You should service your boiler once a year. Annual servicing ensures it runs safely, maintains efficiency, and keeps your manufacturer warranty valid.

Solar Panels

Battery Storage

Solar installation

Buy New boiler

Replace your old boiler

Boiler repair

Ev Charger

Battery Storage

Ev charger installation