‘London Boiler Company is very important customer’
says Worcester Bosch CEO Carl Arnzen (and no ….Carl had’nt been at the Sherry at the time)
Whats the difference between a Conventional Boiler, Heat only Regular Boiler and System Boiler ?
Regular Boiler, Heat only and Convesntinal Boiler are all both same thing, its just gas safe engineers and
plumbers call them different names.
Regular Boiler, Heat only and Conventional Boiler – this type of boiler has a natural gas supply and a flow
and return pipe only. In order for this boiler to work it needs a permanent live supply (often not there on existing
wiring) an external central heating pump (aka circulkator) and loft open ‘feed & expansion tank’ or closed
expansion vessel.
System Boiler, this type of boiler has a natural gas supply and a flow and return pipe only. The boiler has a
central ehating pump built inside the boiler and aslo has a ‘expansion vessel’ built inside the boiler.
System Boilers and Regular Boilers both require an external hot water tank
Worcester Bosch 4000

12 Year Parts and Labour Guarantee – extended by us
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 superefficient 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. Super quiet operation.
12 Year Parts and Warranty – no small print, all parts included with no Exclusions
Can easily be connected to a Copper Hot Water Tank or Unvented Hot Water Cylinder
All our engineers are Bosch Factory trained engineers
Dimensions 724mm x 400mm x 310mm
Heat outputs 24kw and 30kw
Worcester Bosch ‘i’ System Boiler

It’s the Scrappy Doo of Boilers …… Small but mighty
Tucked away inside one of your kitchen cupboards,the Greenstar i System Compact punches well above its weight. With enough power for busy homes with twobathrooms, you’ll get all the heating and hot water you need, whatever the weather.
Designed to fit inside a Kitchen Cupboard
Dimensions 690mm x 390mm x 280mm
Heat outputs 27kw and 30kw
Worcester Bosch 8000 System Boiler
The Steve Austin of the Boiler


12 Year Parts and Labour Guarantee
The Steve Austin of the Boiler Range Life and Style Range Sleek, glossy, and powerful – this is a boiler for big family homes.
The new Greenstar 8000+ Style can stand up to the busiest of mornings, with everybody showering and the heating on full blast. As pretty as it is powerful, with a sleek gloss black finish and dotted design, this is luxury and practicality combined.
The 8000+ system boiler can connect wirelessly to a smart thermostat for easy management and control – wherever you are.
Dimensions 780mm x 440mm x 365mm
Boiler Heat Outputs 30kw and 35kw
Efficient* – 94% central heating efficiency to help keep bills low
*Dolphin friendly