Worcester Greenstar 4000 21kW System 7733600383

Built on all the tried, tested and much-loved features of the Greenstar i, the Greenstar 4000 is instantly familiar and yet totally transformed in appearance, performance and installer plus points. We’ve raised the bar with the speed and ease of installation, commissioning and servicing, alongside improvements in efficiency and control. 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 12m with 60/100mm flues) and a 500ml integrated condensate siphon to reduce the risk of freezing Complete peace of mind for the end user with a 10-year heat exchanger and a 7-year product guarantee available as standard. Wide modulation range designed to optimise efficiency when heating demand is low. High-end design, quiet operation (up to 42dB(A)) with an intuitive, long text, colour boiler display for ease of use