Greenstar Heatslave II External Combi Boilers UK

Greenstar Danesmoor External System System Boilers UK

Added efficiency – Compatible with solar panels for extra efficiency

Quiet – Enjoy the peace, quiet in operation

Flexible – Suits many homes, with sizes from 12kW-32kW

Estimated Cost 

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Technical Specifications

Greenstar Danesmoor External System 12/18 (2022+)

Part Number: 7 731 600 257

ErP Efficiency Rating: A

Fuel Type: Oil

Control Options: EasyControl compatible

Solar Compatibility: Yes

Output: 18 kW

Dimensions (HxWxD): 950 x 565 x 780 mm

Clearances (mm): 300 top, 5 sides, 600 below/front

Flue Options: Horizontal up to 6m, Vertical up to 8m

Ingress Protection: IP20

Weight: 119 kg

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.

Are You Ready To Start Your Renewable Journey

With RiseToRenewables.

By choosing us, you’re not just adopting renewable energy you’re joining a movement to protect the planet for generations to come.

Book consultation now

At Rise to Renewables, we are committed to driving the transition toward a cleaner, greener future.

Our mission is to empower households, businesses, and communities to embrace renewable energy solutions that reduce carbon footprints, cut energy costs, and create a sustainable tomorrow.

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Contact Details

  • info@risetorenewables.com
  • 020 3827 1685
  • One Canada Square, Canary Wharf, London, E14 5AA

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