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Worcester Bosch Greenstar 12Ri Regular Gas Boiler

From: £1,949.00

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Worcester Bosch


Greenstar 12Ri Regular Gas Boiler

Is Condensing


Efficiency Rating


Band Rating

A Rating

LPG Compatible


Standard Warranty

Up to 8 Years

Central Heating Max. Output



Wall Mounted

Flow Rate


ERP Rating

A Heat

Product Description

The Worcester-Bosch Greenstar 12Ri is a regular condensing boiler that is sufficiently compact, lightweight and designed for wall-mounted installation.

How efficient is the Greenstar 12Ri?

This boiler has a 92% efficiency which makes it an ErP A-rated boiler. This is a strong indication that it could help to lower your heating bills.

Is the output rating suitable for my home? The 12 kW output rating of this boiler is well suited to properties with around 10 radiators.

Are any other options available in the range?

The Greenstar 12Ri has the lowest output in the range and if you’re looking for a more powerful regular boiler then you have no shortage of options as there are 15 kW, 18 kW, 21 kW, 24 kW, 27 kW and 30 kW are also available.

Is a regular boiler suitable for my home?

Regular boilers need to be installed alongside feed and expansion tanks in the loft as well as a hot water cylinder which stores domestic hot water. Water is fed down to the boiler from the tank in the loft and is then heated for central heating. A regular boiler is only recommended for properties which already have the pipework to suit all of the external parts.

How long is the warranty period?

A warranty of up to 10 years is available on this boiler when installed by a Worcester accredited installer.

What are the key features of the Greenstar 12Ri?

The appliance employs a robust and highly efficient heat exchanger constructed from cast aluminium and silicon which allows the latent heat in exhaust gases to be extracted for useful purposes rather than being lost through the boiler flue. Plus, it has been recommended by the Energy Saving Trust.

How big is the Greenstar 12Ri?

Designed for compact wall-mounted installation, this boiler measures 600 x 390 x 270mm (HxWxD). Remember that space will also be needed for the tanks and cylinder.