Worcester Greenstar 4000 18kW LPG System Boiler
The Worcester Greenstar 4000 18kW LPG System Boiler is a dependable and efficient choice for medium to large-sized homes, especially those using LPG instead of mains gas. Designed to work with a stored hot water cylinder, it delivers reliable heating and hot water performance throughout the property.
Thanks to its compact and lightweight build, this boiler is easy to install in a wide range of locations. It also includes useful built-in components such as a pump and expansion vessel, helping streamline installation. With support for a variety of optional heating controls, homeowners can tailor their system for maximum comfort and energy efficiency.
Key Features
LPG model, ideal for properties without access to mains gas
Compact, space-saving dimensions for flexible installation
Built-in pump and expansion vessel to simplify setup
Compatible with an optional plug-in diverter valve
Works with a wide range of optional heating controls
Technical Specifications
Manufacturer: Worcester Bosch
Model: 4000
MPN: 7733600382
SKU: 79145
GTIN: 4057749856715
Performance:
Boiler CH Output: 18kW
CH Output (BTU): 61,000
ErP Rating: A Rated for Heating
Dimensions:
Height: 724mm
Width: 400mm
Depth: 310mm
Weight:
Gross Weight: 33.2kg
Warranty:
7 Years (Subject to manufacturer’s T&Cs)
FAQs
Is the 18kW LPG model suitable for larger homes?
Yes. The 18kW output makes it a strong choice for **medium to larger homes**, especially those with multiple radiators and a stored hot water cylinder.
Do I need a hot water cylinder with this boiler?
Yes — as a **system boiler**, it requires a stored hot water cylinder, but does **not** need a separate feed tank like a traditional boiler.
Can this boiler work with smart thermostats?
Yes. The Greenstar 4000 range supports a variety of **smart and traditional controls**, helping you boost comfort and reduce energy use.
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