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Worcester Bosch Greenstar 9i System Gas Boiler

From: £1,999.00

Get a quote to install this boiler.


Worcester Bosch


Greenstar 9i System Gas Boiler

Is Condensing


Efficiency Rating


Band Rating

A Rating

LPG Compatible


Standard Warranty

Up to 8 Years

Central Heating Max. Output

9.2 kW


Wall Mounted

Flow Rate


ERP Rating

A Heat

Product Description

The Greenstar 9i is a boiler made by Worcester Bosch. This boiler is a system gas wall mounted model, a perfect unit for homes with up to 10 radiators and multiple bathrooms.

How efficient is the Greenstar 9i?

The Greenstar i is a highly efficient boiler with an output of 9kW and an efficiency rating of 93%, making it an A rated boiler. Such high levels of efficiency mean that it could help to lower your heating bills.

Is the output rating suitable for my home?

A central heating output of 9.2 kW makes this the smallest system boiler in the Greenstar i range. It’s well suited to properties with fewer than 10 radiators.

Are any other options available in the range?
If you need a more powerful system boiler then the Worcester Bosch Greenstar i range also includes outputs of 12.2 kW right up to 30 kW. No shortage of options to help you find the right boiler.

Is a system boiler suitable for my home?

System boilers are well suited to homes with 2 or more bathrooms as they store domestic hot water in a cylinder. As a result, you’ll need additional space for the cylinder as well as the boiler. For properties with 1 bathroom, a combi boiler would be a better option.

What are the key features of the Greenstar 9i?

This boiler is easy to use with simple controls, clear information displays, a wide range of control choices, and a low energy pump which helps to reduce your electrical usage.

The Greenstar i comes with ways to protect itself from any sort of damage thanks to its large condensesure style siphon that is built in as standard, eliminating the risk of frost if installed in a loft or garage. With it being a compact boiler it is able to fit into a standard sized cupboard meaning it’s perfect to be hidden away out of sight and out of mind.

How big is the Greenstar 9i?

Designed for compact wall-mounted installation, the Greenstar 9i measures only 710 x 400 x 330mm (HxWxD).