Worcester Greenstar 4000 21kW System Boiler Natural Gas

The Greenstar 4000 21kW System Boiler is the direct upgrade for it's predecessor the Greenstar 21Ri and is most suited to medium sized homes with one or two bathrooms. It features a modern new design, a full colour text display that is easy to use and it is exceptionally quiet too. The Greenstar 4000 has a wide power range to meet all of your heating and hot water needs, whilst doing so efficiently.

Features & Benefits

• 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

Extended 8 Year Manufactures Warranty available if installed With any Greenstar System Filter.

Extended 10 Year Manufactures Warranty available for any Worcester Accredited Installer who are an Excelerate member if installed with any Greenstar System Filter. Find out more about Worcester Excelerate here.

Please read Worcesters full terms and conditions for extended guarantees.

Picking the right type of Boiler is a major decision. Once you decide that Gas System Boilers give the best solution then the Worcester Bosch Greenstar 4000 21kW System Gas Boiler - 7733600383 is clearly worth adding to the shortlist.