Worcester Greenstar 4000 12kW LPG System Boiler
The Worcester Greenstar 4000 12kW LPG System Boiler is a reliable, efficient heating solution designed for homes that use a stored hot water cylinder. It’s ideal for medium-sized properties and for households that need consistent hot water performance throughout the day.
Compact, lightweight, and thoughtfully engineered, this boiler is easy to install in a wide range of locations. Its built-in pump and expansion vessel help streamline installation, while optional plug-in controls allow homeowners to customise how their heating system operates for added comfort and reduced energy use.
As an LPG model, it's a great choice for properties not connected to mains gas, including rural homes or holiday lodges. Optional diverter valves and smart controls make it flexible enough to match different heating setups and user preferences.
Key Features
LPG model ideal for off-grid properties
Compact, space-saving design for easy installation
Built-in pump and expansion vessel
Optional diverter valve for flexible system layouts
Wide choice of heating controls for improved comfort and efficiency
Technical Specifications
Manufacturer: Worcester Bosch
Model: 4000
MPN: 7733600378
SKU: 79141
GTIN: 4057749856678
Performance:
CH Output: 12kW
CH Output (BTU): 40,000
Heating Efficiency: A-Rated
Dimensions:
Height: 724mm
Width: 400mm
Depth: 310mm
Weight:
Gross (with packaging): 33.2kg
Warranty:
7 Years (subject to manufacturer T&Cs)
FAQs
Is the 12kW model suitable for larger homes?
The 12kW output is best for **small to medium-sized homes** with moderate heating requirements. Larger homes may need a higher-output model.
Do I need a hot water cylinder with this boiler?
Yes. As a **system boiler**, it works alongside a stored hot water cylinder to supply hot water efficiently.
Can this boiler be paired with smart heating controls?
Absolutely. The Greenstar 4000 range works with a variety of **optional Worcester controls and smart thermostats** to optimise comfort and energy savings.
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