Greenstar 25Si
Installations of Worcester's products must comply with Irish building standards. Please refer to the Department of Environment, Heritage and Local Government for further information.
Description
The Greenstar Si combi boilers are our mid-range appliances.
They’re suitable for apartments and small to medium sized 1 bathroom properties.
You can control both the hot water and central heating temperatures on a Greenstar Si boiler. There is also a range of optional controls available, offering you further comfort and flexibility.
For further peace of mind, every boiler in Worcester’s Greenstar gas and LPG condensing boiler range has been awarded a Which? Best Buy accreditation.
Central heating output: 24kW
Domestic hot water flow rate: 10.2 litres per minute at 35 degree temperature rise (provided adequate mains water pressure is available)
Efficiency
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Features and benefits
- Best boiler efficiency rating (SEDBUK band A)
- Keep hot facility - instantly available hot water
Wall mounting frame allows pipework to be hidden from view
Low NOx and CO2 emissions - environmentally friendly
Low NOx and CO2 emissions - environmentally friendly
5 year boiler guarantee until 31st March 2012 (Standard guarantee: 2 year boiler guarantee, 10 year guarantee on primary heat exchanger and 5 year anti-scale guarantee on domestic hot water heat exchanger (all subject to terms and conditions))
Hot water and central heating temperatures can be controlled
- Multi-directional fluing means boiler can be sited in a wide variety of places
- Mechanical and digital controls all compatible
Product brochure
Our Greenstar gas boiler brochure guides you through our condensing gas boiler range.
Download this brochure Order a printed copy of this brochure View manuals for the Greenstar 25SiFind an installer

As a manufacturer, we supply through trade rather than directly to the public which is why we are unable to publish prices on our website.
Your local Worcester Accredited Installer, who can be found using the search below, will be happy to contact you and provide you with a free quote. Worcester Accredited Installers specialise in Worcester products and many can offer extended warranties.


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