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Our rating: 4/5
Efficiency rating: 90.1%*
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Worcester-Bosch Greenstar 15Ri
The Worcester-Bosch Greenstar 15Ri is one of the smallest of the regular – also known as "conventional" or "traditional" – condensing boilers available form Worcester-Bosch. The appliance is capable of outputting between 3.7kW and 12.3kW to domestic hot water and central heating systems but is no less efficient than some of its more powerful cousins. Indeed the Worcester-Bosch Greenstar 15Ri is 90.1% energy efficient in its natural gas guise and 91.4% energy efficient in its LPG ("Liquified Petroleum Gas") variant, meaning that it is classified as "A" rated for energy efficiency by SEDBUK. This is in comparison to an efficiency of around 75%, or less, for some other conventional boilers – especially older boilers – so it is easy to see how the Worcester-Bosch Greenstar 15Ri can reduce your domestic fuel costs and your carbon footprint.
The Worcester-Bosch Greenstar 15Ri is also compact in terms of its dimensions – H600mm x W390mm x D270mm – and weighs just 22.6kg so can be installed in a kitchen cupboard, an airing cupboard or in a different location depending upon your specific requirements. The appliance is supplied with a wall mounting bracket for attachment to a wall surface and levelling screws which allow the boiler unit to be adjusted so that it lies plumb against the wall.
Other key features of the Worcester-Bosch Greenstar 15Ri include:
- Cast aluminium and silicon heat cell
- Operation on open vent and sealed primary water systems
- Reversible flow and return pipes
- Choice of vertical or horizontal flue systems in 100mm or 125mm diameter
- Low environmental emissions of nitrogen oxide (NOx) and carbon dioxide (CO2) pollutants
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* When review applies to a range of Boilers, efficiency applies to best model in range. Always check with manufacturer.