Worcester 4000 21kw System

The Greenstar 4000 system boiler is a flexible option for many homes in the UK, it features a modern new design, an easy to use full colour text display and it’s quiet too. The Greenstar 4000 system has a wide power range to meet all of your heating and hot water needs efficiently.

• Wide power range helps to reduce gas consumption and lower energy bills
• The modern new design comes with an easy to use colour display
• Our quietest system boiler, making it easy to live with
• Features wireless connectivity with the Bosch EasyControl
• Suitable for homes where the heating system includes a hot water storage cylinder
• Can be used with Greenskies solar panels for energy and cost savings

Product Details PDF