‘London Boiler Company is very important customer’
says Worcester Bosch CEO Carl Arnzen (no Sherry at the time)
Now please be warned ….this may get a bit confusing …….its confusing for us ….and we work very closly with Worcester Bosch ….and NO ….we havent been at the Sherry !!
If its easier please feel free to call us antytime and speak with an engineer. 0208 829 8244
We persoanlly think Bosch have got carried away and now manufactirer too many combination boiler, lots of choice is a good thing….to much choice isnt always so good, heres why
Combination Boiler Choices
If you live in a 1, 2 or 3 bedroom flat or apartment, here are your choices of combiantion boiler
Bosch 1000 (models 24kw or 30kw*) boiler
Bosch 2000 (models 25kw or 30kw*) boiler
Bosch 4000 (models 25kw or 30kw*) boiler
Bosch CDI (models 28kw 32kw or 36kw*) boiler – please note, up until a few years ago, this was the top of the range boiler. We love the CDI……its super dooper effeienct and in terms of reliability its bullet proof.
*only difference between the boilers is the hot water outpurt
If you live in 3-4 bedroom house, here are your choices of combiantion boiler
Bosch CDI (models 28kw 32kw or 36kw*) boiler – please note, up until a few years ago, this was the top of the range boiler. We love the CDI……its super dooper effeienct and in terms of reliability its bullet proof.
Bosch 8000 (models 30kw or 50kw*) boiler – this model replaced the CDI model (we think the CDI is more reliable)
Bosch Highflow (models 440cdi or 550cdi*) boiler – this is best combiantion boiler that Bosch manufacturer, the Boss has a Highflow in his home….and so do his parents…….massive hot water ouputs for multple showers
*only difference between the boilers is the hot water outpurt
Bosch do make a lot of different combination boiler models
Super Value Boiler
Bosch 1000

5 Year Parts and Labour Guarantee
The go-to boiler for smaller homes that want to keep an eye on bills, efficiency, and space.
Designed to be tucked away inside a kitchen cupboard, and with a QuickTap feature to cut down on water usage, the Greenstar 1000 is a budget-friendly solution that’ll give small homes everything they need.
The Greenstar 1000 is a lightweight economy combi boiler and is fully controlled with a few simple touches on a clear and easy display.
Installed by Bosch Factory trained engineers
Dimensions 655mm x 395mm x 285mm
Greenstar 1000 24kW NG 8.4 litres per min hot water capacity
Greenstar 1000 30kW NG 10.8 litres per min hot water capacity
Good Value Boiler
Bosch 2000

The Greenstar 2000 is a sleek powerhouse, giving you all the heating and hot water you need, without the big price tag or noisy running sounds. Stylish enough to sit proudly in your kitchen, but small enough to go unnoticed, this is the go to combi boiler for flats and homes with a single bathroom.
Plus, it’s one of our most efficient combi boilers yet. With aQuickTap feature to stop wasting water waiting for it to heat up, recyclable packaging to reduce waste, and an impressive 94% central heating efficiency the Greenstar 2000 makes your home heating both reliable and efficient.
Dimensions 724mm x 400mm x 300mm
Greenstar 2000 25kW NG 10.0 litres per min hot water capacity
Greenstar 2000 30kW NG 12.3 litres per min hot water capacity
Premium Bosch Boiler
Bosch 4000

10 Year Parts and Labour Guarantee
Designed to meet the needs of small and medium homes, without being loud or costly to run, the Greenstar 4000 is a big-time boiler with a super-efficient rating. This is one to stand the test of time, warm you up whatever the weather, and keep your home running smoothly.
The 4000 can connect wirelessly* to a smart thermostat for easy management and control wherever you are
*so can the 1000 and 2000 (but the Bosch website doesn’t say that)
Dimensions 724mm x 400mm x 310mm
Greenstar 4000 25kW NG 10.0 litres per min hot water capacity
Greenstar 4000 30kW NG 12.3 litres per min hot water capacity
Bosch Compact Combination Boiler
Bosch Si Compac

12 Year Parts and Labour Guarantee
Premium Boiler with standard software (CH heat output cant be adjusted)
As a combi boiler, the Greenstar 30Si has a central heating output of 24 kW and domestic hot water output of 30 kW. This makes it well suited to properties with up to 10 radiators and a single bathroom
Fits in a standard kitchen cupboard
Dimensions 690mm x 390mm x 280mm
Greenstar Si 25kW NG 9.0 litres per min hot water capacity
Greenstar Si 30kW NG 11.0 litres per min hot water capacity
Bosch Compact Combination Boiler
Bosch CDI Compact

14 Year Parts and Labour Guarantee
Premium Boiler with standard software (CH heat output CAN be adjusted)
As a combi boiler, the Greenstar 30Si has a central heating output of 24 kW and domestic hot water output of 30 kW. This makes it well suited to properties with up to 10 radiators and a single bathroom
Fits in a standard kitchen cupboard
Central heating output can be adjusted from 7kw to 24kw
Dimensions 690mm x 390mm x 280mm
Greenstar CDI 28kW NG 10.0 litres per min hot water capacity
Greenstar CDI 32kW NG 11.0 litres per min hot water capacity
Greenstar CDI 36kW NG 13.0 litres per min hot water capacity
This boiler is bullet proof
Bosch Compact Combination Boiler
Bosch 8000 Life or Style

12 Year Parts and Labour Guarantee
They Worcester Bosch Daddy of Boilers. The new Greenstar 8000+ can stand up to the busiest of mornings, with everybody showering and the heating on full blast. Designed to meet the needs of the largest family homes, this is the boiler that’ll do everything you need, whenever you need it to.
The 8000+ can connect wirelessly to a smart thermostat for easy management and control wherever you are. (so do all the other boilers)
Dimensions 780mm x 440mm x 365mm
Greenstar 30kW: model: 12.3 litres per min hot water capacity
Greenstar 35kW: model: 14.3 litres per min hot water capacity
Greenstar 40kW: model: 16.4 litres per min hot water capacity
Greenstar 45kW: model: 18.3 litres per min hot water capacity
Greenstar 50kW: model: 20.3 litres per min hot water capacity
We think Jeremy Clarkson would describe this boiler as a meeting of Mike Tyson and a Ferrari
Did you know ?
The new 8000 boiler is a CDI Boiler which is housed by a slick modern case with a new digital interface, what’s an interface ??
Answer – Posh name for boiler display
The early 8000 models suffered with terrible software problems caused by the digital display/interface
