Upgrade your home heating and hot water with the Worcester Bosch Greenstar 4000 25kW Combi Gas Boiler, a compact and efficient solution designed for small to medium-sized homes with one bathroom. With an ErP A rating, wide modulation range and instantaneous hot water, it delivers reliable heating while helping to optimise energy use.
The Greenstar 4000 combines modern design with easy-to-use controls, featuring a clear full-colour text display for straightforward operation. Its innovative Quick Tap water-saving function can help reduce unnecessary water usage, while the boiler’s strong performance in low water pressure areas helps provide comfortable hot showers.
Designed with quiet operation in mind, the Greenstar 4000 produces noise levels of up to just 45 dB(A), making it well suited to kitchens, utility areas and other living spaces where low noise is important. Wireless connectivity with Bosch EasyControl also provides added flexibility for managing your heating system.
Installation is made easier with a pre-piping jig, rear piping provision, long flue options up to 12m and an integrated 500ml condensate siphon. The boiler also comes with a 7-year guarantee, extendable to 8 years when installed with a Greenstar system filter.
Key Features:
25kW Worcester Bosch Greenstar 4000 combi gas boiler
ErP A-rated heating efficiency
Suitable for small to medium homes with one bathroom
Instantaneous hot water on demand
Wide modulation range for efficient operation
Quick Tap function helps reduce water waste
Quiet operation up to 45 dB(A)
Full-colour text display with intuitive controls
Performs well in low water pressure areas
Wireless connectivity with Bosch EasyControl
Compact, modern design
Pre-piping jig for easier installation
Flue options up to 12m
7-year guarantee, extendable to 8 years with a Greenstar system filter
Product code: 7733600371