Worcester Bosch Greenstar 4000 Combi Boiler

Worcester Bosch Greenstar 4000 Combi Boiler

By Worcester Bosch · Model: Greenstar 4000 30kW · Plumbing & Heating

Compact wall-hung combi boiler with 30kW output, hydrogen-blend ready, and up to 94% efficiency.

  • 30kW heating output
  • Up to 94% ErP efficiency rating
  • Hydrogen-blend ready (up to 20%)
  • Compact dimensions for easy installation
  • 10-year guarantee available

Overview

The Worcester Bosch Greenstar 4000 is a mid-range combi boiler designed for straightforward installation and reliable performance.

In-Depth Look

The Greenstar 4000 sits in Worcester Bosch’s mid-range lineup, offering a sensible balance of features, performance, and price.

Verdict

A solid, mid-range combi boiler from a well-established manufacturer. Practical choice for standard domestic installations.

Specifications
Output (Heating)30kW
Efficiency (ErP)94%
Dimensions (H x W x D)710 x 400 x 330mm
Weight32.9kg

Who It's For

  • Heating engineers looking for a reliable mid-range install
  • Homeowners replacing an older combi boiler

Pros & Cons

Pros

  • Trusted brand with strong installer support
  • Compact dimensions for cupboard installation
  • Hydrogen-blend ready for future-proofing

Cons

  • Flow rate may be insufficient for multiple bathrooms
  • Premium price compared to some competitors

Buying Guides

Related Products