A combination or 'combi' boiler is both a high efficiency water heater and a central heating boiler in a single compact unit. Combi boilers heat water directly from the mains when you turn on a tap, so you won’t need a hot water storage cylinder or a cold water storage tank in the roof space.

They are also very cost-effective and energy-efficient as water is heated instantly rather than being heated and then stored in a cylinder. An added benefit is that hot water is delivered at mains pressure, which means that you could get a powerful shower without the need for a separate pump.

Greenstar 8000 Life

• Features a modern new design
• Part of our most powerful wall hung boiler range, suitable for larger homes
• More connected, with wireless compatibility with the Bosch EasyControl

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Greenstar 8000 Style

• Stunning design-led boiler available in a high gloss black or white
• Part of our most powerful wall hung boiler range, effortlessly heating larger homes
• Our most connected and intelligent boiler, with wireless connectivity to the Bosch EasyControl

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Greenstar i

• Features a modern new design
• Part of our most powerful wall hung boiler range, suitable for larger homes
• More connected, with wireless compatibility with the Bosch EasyControl

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Greenstar Si

• Our space saving combi boiler that fits within a standard kitchen cupboard
• Suitable for small to medium homes
• Fills a standard kitchen sink in 45 seconds*

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Greenstar CDi Compact

• Our space saving combi boiler that fits within a standard kitchen cupboard
• Suitable for homes with more than one bathroom
• Fills a standard kitchen sink in 37 seconds*

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Greenstar CDi Classic

• Our top of the range high performance combi boiler
• Suitable for larger homes with one or two bathrooms
• Fills a standard kitchen sink in 32 seconds*

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Greenstar CDi Highflow

• Our ultra high performance floorstanding combi boiler
• Designed for larger two bathroom homes
• Fills a standard kitchen sink in 19 seconds*

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