Worcester Bosch Boilers
MEET LIFE
The Worcester Greenstar 8000 Life, available in white, keeps all of the tried, tested and much-loved CDi Classic features, and improves on everything else.
With outputs of up to 50kW for combi and regular, and outputs up to 35kW for system, our next generation boiler also benefits from the same pipe connections, flue and fixing points as the CDi Classic for a ‘simple switch’.
Our 8000 Life, which comes with a 12-year guarantee when installed with a Greenstar System Filter, comes complete with an improved push-button LCD display, with diagnostic codes similar to that of the CDi Classic.
MEET STYLE
The Worcester Greenstar 8000 Style, has all the benefits of our 8000 Life, but is available in both high gloss black and white, represents a new benchmark in premium quality heating and hot water provision.
Available in combi up to 50kW and system 30-35kW, our new top of the range boiler offers a unique design and a pioneering full colour touchscreen display. It features a detailed text display and an intuitive menu structure for rapid diagnosis, fault-finding and commissioning, with no need to search through manuals and fault codes.
COMBI RANGE
(available as Life & Style)
30KW | 35KW | 40KW | 45KW | 50KW | |
---|---|---|---|---|---|
Output (kw) | 30 | 35 | 35 | 35 | 35 |
Flow Rate (ltr / min) (35°c) | 12.3 | 14.3 | 16.4 | 18.3 | 20.3 |
Flow Rate (ltr / min) (40°c) | 10.7 | 12.5 | 14.3 | 16.1 | 17.9 |
SYSTEM RANGE
(available as Life & Style)
30 KW | 35 KW | |
---|---|---|
Output (kw) | 30 | 35 |
REGULAR RANGE
(available as Life only)
30 KW | 35 KW | 40 KW | 45 KW | 50 KW | |
---|---|---|---|---|---|
Output (kw) | 30 | 35 | 40 | 45 | 50 |
A Combination of ‘Combi’ boiler is both a high efficiency water heater and a central heating boiler in a single 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 seperate pump.
- Compact sizes make combi boilers perfect for smaller properties
- Ideal where there is little of no loft space
- No Need for a hot water cylinder allows increased living space
- No cold water storage tank frees up a loft for conversion
- No risk of loft pipework freezing
- Less pipework in the home makes installation typically cheaper
Greenstar 4000
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.
Model | 25kW | 30kW |
---|---|---|
Output (kw) | 24 | 24 |
Flow Rate (ltr / min) | 9 | 12.3 |
Greenstar Si Compact
The Greenstar Si Compact combi boiler is suitable for small to medium sized homes with one bathroom.
This boiler is designed to fit within a standard kitchen cupboard and has an easy to use control that allows you to fine tune your comfort.
Model | 25Si | 30Si |
---|---|---|
Output (kw) | 25.0 | 30.0 |
Flow Rate (ltr / min) | 10.2 | 12.3 |
Greenstar CDi Compact
The Greenstar CDi Compact combi boiler is suitable for small, medium and large-sized properties with one or two bathrooms.
This boiler is designed to fit within a standard kitchen cupboard. Despite its compact size, the high outputs make it suitable for homes with more than one bathroom.
Model | 28CDi | 32CDi | 36CDi |
---|---|---|---|
Output (kw) | 28.0 | 32.0 | 36.0 |
Flow Rate (ltr / min) | 11.4 | 13.1 | 14.7 |
Greenstar CDi Highflow
The Greenstar CDi Highflow is a well-established floor standing combi boiler that is renowned for industry-leading hot water flow rates.
Perfect for larger homes with two bathrooms.
Model | 440CDi | 550CDi |
---|---|---|
Output (kw) | 29.5 | 41.1 |
Flow Rate (ltr / min) | 20.0 | 25.0 |
Worcester 2000
Our Greenstar 2000 is our lowest priced combi boiler, suitable for apartments, small and medium sized homes with one bathroom.
This is our quietest combi boiler, and has been designed to provide an attractive solution that comfortably fits between standard kitchen cupboards.
Model | 25kW | 30kW |
---|---|---|
Output (kw) | 25 | 30 |
Flow Rate (ltr / min) | 9 | 10.8 |
Combi Boilers explained

System Boilers require a cylinder for storing hot water, however, the major heating and hot water system components are built into the boiler itself, making it quicker and easier to install. In addition, there is no need for a tank in the loft space or where space is earmarked for a conversion.
These boilers are also compatible with solar heating systems, which deliver environmental benefits as well as lower energy bills.
- Ideal for homes with more than one bathroom
- Constant supply of hot water to any number of taps at the same time
- No need for a loft tank, freeing up space and eliminating worries about leaks or frost damage
- Economical to run
- Built-in components makes installation quicker and neater
Greenstar 4000 System
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.
Model | 12kW | 15kW | 18kW | 21kW | 24kW |
---|---|---|---|---|---|
Output (kw) | 12.0 | 15.0 | 18.0 | 21.0 | 24.0 |
Greenstar i System (27kW & 30kW)
Our higher output Greenstar i System boiler is part of that latest generation of smaller and lighter boilers.
Suitable for small, medium and large homes, the boiler can also be fitted in a standard kitchen cupboard.
This boiler can be used with our range of high-efficiency Greenstore cylinders for a complete Worcester system solution for your home.
Model | 27i | 30i |
---|---|---|
Output (kw) | 27.0 | 30.0 |
System Boilers explained

Regular boilers (sometimes known as traditional, conventional or heat only boilers) are ideally suited to homes that already have a traditional heating and hot water system which is linked to a separate hot water cylinder. These boilers also need a cold water storage tank in the loft to feed the hot water cylinder as well as a tank that maintains the water level of the central heating system.
A regular boiler may be the best option for replacing an existing boiler if the property has an older radiator system, as it might not be able to cope with the higher water pressure that is delivered by system or combi boilers.
- Ideal for homes with more than one bathroom
- Constant supply of hot water to any number of taps at the same time
- No need for a loft tank, freeing up space and eliminating worries about leaks or frost damage
- Economical to run
- Built-in components makes installation quicker and neater
Greenstar FS CDi Regular
The Greenstar FS CDi Regular is a perfect replacement for an older floor standing boiler in a larger property.
This boiler can be used with our range of high efficiency Greenstore cylinders allowing stored hot water to be rapidly replenished.
Model | 30CDi | 42CDi |
---|---|---|
Output (kw) | 30.0 | 40.8 |
Greenstar Ri (12kW to 24kW)
The Greenstar Ri boiler is a compact, wall mounted boiler that is perfect for small and medium sized homes. It is also perfect for replacing a boiler in an existing system.
Small enough to be installed in a standard kitchen cupboard, the boiler can be used with our range of high efficiency Greenstore cylinders for a complete Worcester system solution for your home.
Model | 12Ri | 15Ri | 18Ri | 24Ri |
---|---|---|---|---|
Output (kw) | 12.0 | 15.0 | 18.0 | 24.0 |
Greenstar Ri (27kW and 30kW)
The higher output Greenstar Ri boiler is a compact, wall mounted boiler that is perfect for medium and large-sized homes.
Small enough to be installed in a standard kitchen cupboard, this boiler can be used with our range of high efficiency Greenstore cylinders for a complete Worcester system solution for your home.
Model | 27Ri | 30Ri |
---|---|---|
Output (kw) | 27.0 | 30.0 |
Regular Boilers explained
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