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Worcester Bosch Greenstar I System 12i boiler

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  2. Worcester Bosch Greenstar i System 12i
Plumbproud rating

91.98%

Worcester Bosch Greenstar i System 12i System Gas boiler

Using factors such as price installed, manufacturer guarantees, energy efficiency and the likely cost of running, among others, this model has been rated as scoring 91.98% on the PlumbProud boiler benchmarking system.

This Worcester Bosch Greenstar i System 12i System boiler is likely to cost you £2,100 supplied and fully installed through PlumbProud, although there may be additional charges if the fit takes longer than anticipated. You will, however, receive a binding quote from us prior to starting work.

If you would like to get in touch with us for a free quote and professional guidance and advice on whether the Worcester Bosch Greenstar I System 12i is the right choice for your home, you can do so by entering your postcode in the quote boxes on this page, calling us on 01604 343053 or you can click here to email us.


Installed price around

£2,100

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Worcester Bosch Greenstar i System 12i System Gas boiler frequently asked questions

Is the Worcester Bosch Greenstar I System 12i boiler a combi, regular or a system boiler?

When looking for a system boiler for your house or flat, the Worcester Bosch Greenstar I System 12i might be a suitable option for you.

System boilers need a hot water cylinder to work but, unlike heat only boilers, they don't require a cold water tank. This can be advantageous if you live in an apartment, lack attic space, or are planning a loft conversion.

System boilers allow you to set the times when you want hot water to be available. Heated water is stored in the cylinder and can be used throughout the day. With a system boiler, if you forget to set the timer, you will have to wait a while for hot water.

The constant supply of hot water from the cylinder ensures that you can have multiple taps and showers in use without a loss of pressure to each point (something combi boilers struggle with). This makes a system boiler suitable for large families and homes with more than one bathroom.

Is the Worcester Bosch Greenstar I System 12i system boiler the right choice for my house or apartment?

To determine that, we need to consider the size of the boiler. Size doesn't mean how big it is - it means how big its "output" is.

Your boiler's output indicates the maximum amount of power available to it to heat the water you need to warm your radiators or when you want hot water from your taps. A higher output rate means that your boiler is capable of heating greater volumes of water.

If a boiler's output rate is too low, you'll often find that the water is not as hot as you want it to be. Too high, however, and you'll end up paying more for your gas than you should be.

The Worcester Bosch Greenstar I System 12i system boiler has an output rate of 12 kW, so which types of property would this be suitable for?

Most experienced heating engineers would likely recommend that, at this level of output, this Worcester Bosch Greenstar i System 12i System boiler would be a suitable choice for smaller homes and apartments with up to 10 radiators and one bathroom.


Worcester Bosch Greenstar I System 12i size

The Worcester Bosch Greenstar I System 12i measures 710 mm in height by 400 mm in width by 330 mm in depth.

Is the Worcester Bosch Greenstar I System 12i non-condensing or condensing?

Condensing gas boilers like the Worcester Bosch Greenstar I System 12i are environmentally friendlier and cheaper to run so, if possible, we strongly recommend that you choose this or one of the very latest models.

Condensing boilers are much more efficient and economical to run because they contain a secondary heat exchanger that captures and recycles the warmth still present in the flue exhaust gases and the water vapour condensation for re-use, meaning that they use less gas to run.

Is the Worcester Bosch Greenstar I System 12i system boiler an environmentally friendly choice?

How we heat our homes and the damage this does to the environment has become a pressing concern for many homeowners worried about the effects and impact of climate change.

Central heating systems are responsible for 14% of greenhouse gas emissions in the UK. You may also be aware that the gas boilers we use emit dangerous nitrogen dioxide in large volumes in the bigger British cities.

Will installing a Worcester Bosch Greenstar I System 12i system in your home be a positive contribution to the environment? The figures below will tell you more.

All new British boilers must perform to a legal minimum energy efficiency of 92% (a low to good SEDBUK "A" rating). Prior to April 2018, the target was 88% (86-90% = SEDBUK "B" and 90%+ = SEDBUK "A").

Efficiency ratings are intended to let consumers know how much energy a boiler uses in its day-to-day activities and how much energy goes to waste.

The Worcester Bosch Greenstar I System 12i was awarded an efficiency rating of 94%, equivalent to a SEDBUK grade of "A".

The Energy Related Products Directive (ERP) was introduced in 2015 and applies to all products that consume energy throughout their lifetime, including during the manufacturing process and at the point of final disposal.

The purpose of the ERP is to ensure that companies create products that are kinder to the environment by reducing both the energy they use and the harmful emissions they produce.

The Worcester Bosch Greenstar I System 12i has an ERP rating of "A".

How many years does the warranty period cover on a Worcester Bosch Greenstar I System 12i boiler?

On the Worcester Bosch Greenstar I System 12i, the manufacturer offers a parts and labour warranty of 7 years.


Worcester Bosch Greenstar i System 12i Gas System boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty7 Years
Output in kW12 kW
Height710 mm
Width400 mm
Depth330 mm
MountingWall
ERP HeatA

The top 10 rated Gas System boilers

Using the Plumbproud scoring system, the current 10 ten Gas System boilers assessed using a number of important variables are as follows:

1Vaillant ecoTEC Plus 61295.72%
2Vaillant ecoTEC Plus 61595.20%
3Vaillant ecoTEC Plus 61894.37%
4Vaillant ecoTEC Plus 62493.33%
5Worcester Bosch Greenstar i System 9i92.89%
6Vaillant ecoTEC Plus 63092.75%
7Worcester Bosch Greenstar 4000 12kW92.50%
8Vaillant ecoTEC Exclusive IQ 62792.42%
9Vaillant ecoFIT Pure 61292.38%
10Vaillant ecoFIT Pure 61592.36%

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Heat only boilers

The ideal boiler perfect for the largest homes

System boilers

Ideal for 3+ bedroom, 2+ bathroom homes

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Worcester Bosch Greenstar I System 12i boiler

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Worcester Bosch Greenstar i System 12i System Gas boiler

  1. Home
  2. Worcester Bosch Greenstar i System 12i
Plumbproud rating for this boiler
91.98%

This Worcester Bosch Greenstar i System 12i System boiler has been rated at 91.98%. Our PlumbProud boiler quality rating system uses price installed, energy efficiency, likely running costs, the manufacturer's warranty and other factors to determine the rating we give.

On a straightforward installation of this make of boiler using PlumbProud, you should expect to budget around £2,100.

You can speak to our friendly and professional advisors by calling 01604 343053. They can provide you with a free quotation on the Worcester Bosch Greenstar I System 12i boiler and confirm that it is suitable for your home. You can also click here to email us or enter your postcode into the quotation box on this page.


Installed price guideline
£2,100

Get your free quote

Worcester Bosch Greenstar i System 12i Gas System boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty7 Years
Output in kW12 kW
Height710 mm
Width400 mm
Depth330 mm
MountingWall
ERP HeatA

Worcester Bosch Greenstar i System 12i System Gas boiler frequently asked questions

Worcester Bosch Greenstar I System 12i - combi, system or regular boiler?

If you want a system boiler for your flat or house, the Worcester Bosch Greenstar I System 12i might be an option for you to consider.

System boilers work similarly to heat only boilers in that they need a hot water cylinder (usually installed in the home’s airing or landing cupboard) to operate. Unlike heat only boilers though, system boilers don’t require a separate cold-water tank, making them a more suitable choice in homes with little or no attic space or where homeowners are planning a loft conversion in the future.

Instead of large cold-water tanks, system boilers use built-in circulating pumps to provide hot water to your taps and radiators. This makes them easier to install from scratch as they have one less component to find room for and fit.

System boilers need to be programmed with the time you want heat and hot water - they don't offer hot water on demand like combi boilers.

Is a Worcester Bosch Greenstar I System 12i system a suitable choice for my house or flat?

You should make sure that the boiler you install in your property is the right "size". And size doesn't mean its physical dimensions, size means how much power it has - the "output".

Your boiler should be able to cope with peak hot water demand in your property and not just your average hot water usage. The output rate of a boiler is measured in kilowatts and tells you how much power a boiler can use to provide hot water to your taps, showers and radiators.

If the output of your boiler is too low, there will often be times when your water isn't as hot as you want. But if your boiler output is too high, it will be more costly to run (often unnecessarily).

The output of the Worcester Bosch Greenstar I System 12i system boiler is 12 kW kilowatts. Which types of property would this be appropriate for?

A PlumbProud Gas Safe engineer would recommend that the most suitable type of property for a Worcester Bosch Greenstar I System 12i system would be smaller homes and apartments containing up to 10 radiators and providing hot water for one bathroom.


How large is the Worcester Bosch Greenstar I System 12i?

The Worcester Bosch Greenstar I System 12i measures 710 mm high and 400 mm wide by a depth of 330 mm.

Is the Worcester Bosch Greenstar I System 12i a non-condensing or condensing boiler?

Condensing gas boilers like the Worcester Bosch Greenstar I System 12i are environmentally friendlier and cheaper to run so, if possible, we strongly recommend that you choose this or one of the very latest models.

Condensing boilers are much more efficient and economical to run because they contain a secondary heat exchanger that captures and recycles the warmth still present in the flue exhaust gases and the water vapour condensation for re-use, meaning that they use less gas to run.

Is the Worcester Bosch Greenstar I System 12i system good for the environment?

How we heat our homes and the damage we might be doing to the environment as a result has become an important point of concern to many homeowners worried about climate change.

In the UK, central heating systems account for 14% of greenhouse gas production. Gas boilers in particular are responsible for emissions of dangerous nitrogen dioxide in British cities.

Will choosing a Worcester Bosch Greenstar I System 12i system boiler for your home be positive for the environment? Let's examine the figures.

All new British boilers must perform to a legal minimum energy efficiency of 92% (a low to good SEDBUK "A" rating). Prior to April 2018, the target was 88% (86-90% = SEDBUK "B" and 90%+ = SEDBUK "A").

Efficiency ratings are intended to let consumers know how much energy a boiler uses in its day-to-day activities and how much energy goes to waste.

The Worcester Bosch Greenstar I System 12i was awarded an efficiency rating of 94%, equivalent to a SEDBUK grade of "A".

The Energy Related Products (ERP) Directive is a European directive which applies to all products that consume energy over their lifetime.

It encourages companies to create products that are environmentally friendlier at all life cycle stages, including initial manufacturing and end use right through to final disposal, with the aim of reducing harmful gas emissions.

The Worcester Bosch Greenstar I System 12i is rated "A".

How many years' warranty does the Worcester Bosch Greenstar I System 12i system come with?

Parts and labour charges incurred during a repair on the Worcester Bosch Worcester Bosch Greenstar I System 12i boiler are covered by a 7 year warranty.


The top 10 rated Gas System boilers

Using the Plumbproud scoring system, the current 10 ten Gas System boilers assessed using a number of important variables are as follows:

1Vaillant ecoTEC Plus 61295.72%
2Vaillant ecoTEC Plus 61595.20%
3Vaillant ecoTEC Plus 61894.37%
4Vaillant ecoTEC Plus 62493.33%
5Worcester Bosch Greenstar i System 9i92.89%
6Vaillant ecoTEC Plus 63092.75%
7Worcester Bosch Greenstar 4000 12kW92.50%
8Vaillant ecoTEC Exclusive IQ 62792.42%
9Vaillant ecoFIT Pure 61292.38%
10Vaillant ecoFIT Pure 61592.36%
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