The Greenstar 4000 is perfect for small to medium sized homes with one bathroom, it features a modern new design, an easy-to-use full colour text display and it’s quiet too. The Greenstar 4000 has a wide power range to meet all of your heating and hot water needs, whilst doing so efficiently.
* Up to a 10 Year guarantee when installed by a Worcester Accredited Installer. Terms and conditions apply.
The entire Worcester Bosch gas boiler range is able to run on a 20% hydrogen blend - so you can be confident it will run on gas for its lifetime.