Worcester Greenstar 4000 25kW LPG Combi Boiler
The Worcester Greenstar 4000 25kW LPG Combi Boiler is a compact and efficient heating solution, designed for apartments and small to medium-sized homes with one bathroom. As part of Worcester Bosch’s latest generation of boilers, it delivers exceptional performance, improved efficiency, and modern control compatibility — all in a sleek, space-saving design.
Powered by LPG (liquefied petroleum gas), the Greenstar 4000 25kW is perfect for properties off the mains gas network. Its A-rated ErP efficiency for both heating and hot water ensures reduced energy bills and a lower carbon footprint, while maintaining the trusted reliability Worcester Bosch is known for.
Compact, Quiet, and Environmentally Friendly
The Greenstar 4000 LPG Combi boasts compact dimensions (724mm x 400mm x 310mm), allowing for flexible installation — even within kitchen cupboards or smaller utility spaces. Its low NOx and CO? emissions make it an environmentally responsible choice, while the ‘Quick Tap’ water-saving function helps reduce water waste by ensuring hot water delivery is more efficient.
Designed with convenience in mind, this model offers aligned vertical pipework connections for quicker installation and removable side panels for easy access during servicing and repairs.
Advanced Features & User-Friendly Design
This LPG model is compatible with a range of optional Worcester Bosch heating controls, giving you greater flexibility over your comfort and energy use. It also works seamlessly with Worcester’s 60/100 flue system, making it easier to tailor the installation to your property layout.
The Worcester Greenstar 4000 range represents a new generation of combi boilers, combining performance, practicality, and eco-conscious engineering to deliver dependable heating and hot water for modern homes.
Key Features & Benefits
A-rated efficiency for heating and hot water
Ideal for small to medium-sized homes with one bathroom
Compact design – fits easily into kitchen cupboards or tight spaces
Environmentally friendly – low NOx and CO? emissions
‘Quick Tap’ function – reduces water waste when drawing hot water
Quick to install – aligned vertical pipework connections
Easy maintenance – removable side panels for simple servicing
Compatible with Worcester 60/100 flue system
Works with Worcester and third-party heating controls
7-year manufacturer’s warranty (subject to T&Cs)
Technical Specifications
Manufacturer: Worcester Bosch
Model: Greenstar 4000 25kW LPG Combi
MPN: 7733600372
SKU: 79137
GTIN: 4057749856616
Boiler Type: LPG Combi Boiler
CH Output: 24 kW / 81,000 BTU
DHW Output: 25 kW
Flow Rate: 10.2L/min @ 35°C rise
ErP Rating (Heating): A
ErP Rating (Hot Water): A
Height: 724 mm
Width: 400 mm
Depth: 310 mm
Weight (Gross): 34.6 kg
Warranty: 7 Years (subject to manufacturer’s terms)
FAQs
1. What type of home is the Worcester Greenstar 4000 25kW LPG Combi best suited for?
This boiler is ideal for **apartments or small to medium-sized homes** with **one bathroom**. It provides both heating and hot water efficiently, making it perfect for households looking to save space and energy.
2. Can this boiler be installed in small spaces?
Yes, the Greenstar 4000 LPG model has **compact dimensions** (724mm x 400mm x 310mm), allowing it to fit neatly into a **standard kitchen cupboard** or similar confined area, offering flexible installation options.
3. What makes this model environmentally friendly?
The Greenstar 4000 25kW LPG Combi features **low NOx and CO? emissions**, an **A-rated efficiency**, and a **‘Quick Tap’ water-saving function**, all of which contribute to reduced energy usage and a smaller carbon footprint.
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