Worcester Greenstar 2000 25kW Combi Boiler
The Worcester Greenstar 2000 25kW Combi Boiler is a compact, efficient and affordable heating solution, ideal for small to medium homes with a single bathroom. Designed with everyday reliability in mind, it offers excellent performance while keeping running costs low.
This model is compatible with Worcester’s wireless RF controls as well as most third-party 230V controls, giving you plenty of flexibility when it comes to managing your heating. With the ability to modulate down to just 3kW, it’s perfect for homeowners looking to significantly reduce gas consumption without compromising on comfort.
Quiet Mark accredited at just 47dB(A), the Greenstar 2000 25kW runs quietly in the background, making it a great choice for homes where the boiler is installed in a kitchen or hallway. It also carries the Which? Best Buy Award, reflecting its strong reliability and customer satisfaction.
Installation is straightforward thanks to in-line hydraulic and gas connections, a pre-wired mains cable and versatile pipe routing options. Optional rear piping accessories are also available to give installers even greater flexibility in tight spaces.
Key Features
A-rated efficiency (94% ErP) for central heating
Ideal for small–medium homes with one bathroom
Ultra-quiet operation at 47dB(A)
Wide 1:10 modulation range, reducing gas consumption
Compatible with Worcester RF controls and 230V third-party controls
Easy installation with pre-wired components and flexible pipe routing
Compact size for convenient cupboard installation
Technical Specifications
Manufacturer: Worcester Bosch
Model: 2000
MPN: 7736902326
SKU: 87354
GTIN: 4062321615697
Performance:
Boiler CH Output: 24kW / 81,000 BTU
Max DHW Output: 25kW
DHW Flow Rate: 10.0 L/min @ 35°C
Heating ErP Rating: A
Hot Water ErP Rating: A
Dimensions:
Height: 724mm
Width: 400mm
Depth: 300mm
Weight: 36kg
Warranty:
7 Years (subject to manufacturer T&Cs)
FAQs
Is the Worcester 2000 25kW suitable for my home?
Yes — it’s best suited for small to medium properties with **one bathroom** and a moderate hot water demand.
How quiet is the boiler when running?
It's **Quiet Mark accredited**, operating at just **47dB(A)** — similar to a quiet conversation — making it ideal for installation in living spaces.
Can I use this boiler with a smart thermostat?
Yes. It works with Worcester RF controls and most **third-party 230V controls**, including popular smart thermostats depending on the setup.
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