Worcester Bosch Greenstar 4000 System Gas Boiler (Natural Gas, ErP) (White) 12kW – 7733600377
Worcester Bosch Greenstar 4000 System Gas Boiler (Natural Gas, ErP) (White) 12kW – 7733600377
Login or Register to get your trade price
In stock
Couldn't load pickup availability



Collapsible content
Product Description
The Worcester Bosch Greenstar 4000 12kW is an ultra-efficient system boiler designed for small homes or apartments with lower heating demands. It features a user-friendly full-colour digital display, quiet performance, and a compact casing suitable for kitchen cupboards. With a high modulation ratio, it adjusts performance for maximum efficiency and comfort, and it is compatible with smart home controls.
- 12 kW output ideal for small central heating systems
- Full-colour touchscreen for easy operation and diagnostics
- Operates at ultra-quiet 42 dB(A) – suitable for indoor living spaces
- Compatible with Bosch EasyControl and other smart thermostats
- Backed by a 7-year guarantee, extendable up to 10 years with accredited installation
Technical Specification
depth | 310 mm |
guarantee | 7-10 Years |
height | 724 mm |
length | 310 mm |
model | Greenstar 4000 12kW |
pack size | 1 |
range | Greenstar 4000 |
supplier part number | 7733600377 |
type | System Boiler |
type x | Heat-Only Central Heating (No DHW Supply) |
width | 400 mm |
boiler system | Sealed System – Requires separate hot water cylinder |
color pattern | White |
energy efficiency class | ErP Class A (Heating) |
material | Aluminum |
mounting type | Wall-Mounted |
power source | Natural gas |