The Worcester Bosch Greenstar 4000 is a full modernised boiler from the design to the easy-to-use full-colour text display, it is also very quiet too. Designed to run on a 20% hydrogen blend for a longer lifespan and energy efficiency.
The Worcester Bosch Greenstar 4000 18kW System Boiler is ideal for medium sized homes.
If your home has a higher demand for heating and hot water, we recommend 21kW or 24kW, on the other hand, the Worcester Bosch Greenstar 4000 15kW System Boiler is better suited for smaller homes.
10