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 4.7 stars

1,247 reviews

 4.7 stars

1,247 reviews

Worcester Bosch Greenstar 21i System Gas Boiler

Worcester Bosch Greenstar 21i System Gas Boiler Boiler
Typical Price (inc VAT)
£1,034
Typical installation Cost (inc VAT)*
£500 - £1000
Sundries (Filter, Flue, etc)
£300
Total Cost
£1,834 - £2,334

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Make Worcester Bosch
Model Greenstar 21i System Gas Boiler
Is Condensing Condensing
Efficiency Rating 94%
Band Rating A Rated
LPG Compatible Yes
Standard Warranty Up to 7 Years
Central Heating Max. Output 21.6 kW
Mounting Wall Mounted
Flow Rate N/A
Typical Price (inc VAT) £1,034
Typical installation Cost (inc VAT)* £500 - £1000
Sundries (Filter, Flue, etc) £300
Total Cost £1,834 - £2,334
ERP Rating A Heat

* This is a guide price for a straightforward, like-for-like boiler replacement. Installation costs will vary dependent on work required.

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Product Description

Designed and manufactured by Worcester Bosch, the Greenstar 21i is a condensing wall-mounted system boiler.

How efficient is the Greenstar 21i?

This is a highly efficient boiler with an efficiency of 94%, which makes it ErP A-rated. Such high levels of efficiency means that it can help to lower your heating bills and your carbon footprint.

Is the output rating suitable for my home?

The Greenstar 21i has an output rating of 21.6 kW which means that it can meet the heating demands of homes with around 15 radiators.

Are any other options available in the range?

There are no shortage of options in the Greenstar i range of system boilers as there are lower outputs of 9 kW to 18 kW as well as more powerful 24 kW, 27 kW and 30 kW models.

Is a system boiler suitable for my home?

System boilers are the best option for medium to large-sized homes with 2 or more bathrooms. This is because of the cylinder which stores hot water.

How long is the warranty period?

A lengthy warranty period of up to 7 years is available when installed by a Worcester Bosch accredited installer.

What are the key features of the Greenstar 21i?

The Greenstar is easy to use and has simple controls with a clear information display that help to make sure you have greater comfort in your home, as well as being good for economy.

This boiler comes with many ways to add reliability such as the low energy pump which helps to reduce for electrical usage, as well as a large condensesure style siphon which is built into the unit to help reduce the risk of frost.

How big is the Greenstar 21i?

This is a compact wall-mounted boiler with dimensions of 710 x 400 x 330 (HxWxD).

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Excellent 4.7 out of 5

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