Worcester Bosch Greenstar 4000 15 kW system boiler is ideal for small to medium sized homes with one bathroom. It features a modern new design a full colour text display that is easy to use and it is exceptionally quiet as well.

• 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 easy control
• 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
• Ease of installation SimpleSwitch to previous Worcester i system models with pre-piping jig offering rear piping as standard
• Flexibility of siting provided by long flue lengths (up to 12 m with 60/100 mm flues) and a 500 ml integrated condensate siphon to reduce the risk of freezing
• Wide modulation range designed to optimise efficiency when heating demand is low
• High end design and quiet operation (up to 42 dB) with an intuitive, long text and colour boiler display for ease of use