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Worcester Bosch Greenstar I System 18i boiler

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  2. Worcester Bosch Greenstar i System 18i
Plumbproud rating

91.13%

Worcester Bosch Greenstar i System 18i System Gas boiler

We have determined a rating of 91.13% for this Worcester Bosch Greenstar i System 18i System boiler using the PlumbProud quality benchmarking system. Factors used to score a boiler include its energy performance, how much it costs to run, the installation price, and how long the manufacturer's guarantee lasts.

On a standard fit, we would expect this Worcester Bosch Greenstar i System 18i System boiler to cost you £2,200 supplied and fully installed by an experienced Gas Safe PlumbProud fitter.

To get a free quote for the installation of the Worcester Bosch Greenstar I System 18i boiler in your home, simply enter your postcode in the box provided on this page. You can also find out whether this is the right boiler for your home by clicking to email our installation team or by calling us on 01604 343053.


Installed price around

£2,200

GET A COMPETITIVE BOILER QUOTE

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Worcester Bosch Greenstar i System 18i System Gas boiler frequently asked questions

Is the Worcester Bosch Greenstar I System 18i boiler a combi, system or regular boiler?

The Worcester Bosch Greenstar I System 18i boiler could be suitable for your house or flat if you are looking for a new system boiler.

A system boiler needs a hot water cylinder to work but it does not require a cold water tank, unlike with heat only boilers. This makes system boilers suitable for properties that lack loft space (or have no loft at all) or where a loft conversion is planned. The cylinder stores hot water for use throughout the day and water can be distributed to more than one tap or shower simultaneously without a loss of pressure or temperature (something combi boilers really struggle with).

System boilers are generally found in larger homes or properties housing large families. System boilers are easier to install than heat only boilers because their major components, including the circulation pump, are built-in and, of course, no cold water tank is needed.

With a system boiler, you use the control panel to set times for when you want the heating and hot water to be available but, unlike combi boilers, they cannot deliver hot water instantly. If you don't set your timer, you will have to wait for the water to heat up.

Should I install a Worcester Bosch Greenstar I System 18i system boiler in my house or flat?

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

A boiler's output level measures how much power it can use to provide you with the hot water you need for your radiators and taps. If a boiler has a high output rate, it can heat greater volumes of water.

If you choose a boiler with too low an output, you'll find that the water coming out of your taps and in your radiators won't be as hot as you want it to be. Choosing one whose output is too high means you'll pay more than you need to for the gas your boiler needs to work.

The Worcester Bosch Greenstar I System 18i system outputs at a maximum of 18 kW, so which types of property would this Worcester Bosch Greenstar i System 18i System boiler be appropriate for?

Most boiler engineers would recommend that a boiler with this output level would be most suitable for smaller homes and apartments with up to 10 radiators and one bathroom.


Worcester Bosch Greenstar I System 18i size

The Worcester Bosch Greenstar I System 18i stands at 710 mm tall, 400 mm wide and 330 mm deep.

Is the Worcester Bosch Greenstar I System 18i condensing or non-condensing?

This Worcester Bosch Greenstar I System 18i is a condensing gas boiler - we always recommend that clients choose the latest condensing models to benefit from the technology, which continues to improve year after year.

Condensing boilers capture the heat still present in flue exhaust gases and water vapour condensation, processing them through a secondary heat exchanger to, among other tasks, heat colder water returning from your radiators.

By selecting a modern condensing boiler, you'll save money on your gas bills as well as benefitting the wider environment.

Is the Worcester Bosch Greenstar I System 18i system boiler good for the environment?

Many homeowners are becoming increasingly concerned about how they heat their homes and the impact it has on climate change and other important environmental issues.

In the largest cities of Britain, gas boilers are responsible for dangerous levels of atmospheric nitrogen dioxide emissions. In total, 14% of the UK’s greenhouse gases are produced by central heating systems.

Would choosing the Worcester Bosch Greenstar I System 18i system help the environment? Let's see what the statistics suggest.

All boilers manufactured in the UK from April 2018 must achieve a SEDBUK “A” grade and an energy efficiency rating of 92% or above. Before that, the minimum was 88% - efficiency ratings of 88% and 89% were scored a “B” and 90%+ an "A".

A boiler's energy efficiency rating describes how much energy it uses and wastes during its standard operation.

The energy efficiency of the Worcester Bosch Greenstar I System 18i was rated at 94% with a SEDBUK grading of "A".

The Energy Related Products (ERP) Directive's aim is to reduce the harmful gas emissions created during a product’s manufacture and active end use right through to its disposal.

The ERP rating for the Worcester Bosch Greenstar I System 18i is "TBC".

How many years' warranty does the Worcester Bosch Greenstar I System 18i system come with?

A parts and labour warranty of 7 years is included when you purchase the Worcester Bosch Greenstar I System 18i boiler through PlumbProud.


Worcester Bosch Greenstar i System 18i Gas System boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty7 Years
Output in kW18 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%

Combi boilers

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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 18i boiler

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Worcester Bosch Greenstar i System 18i System Gas boiler

  1. Home
  2. Worcester Bosch Greenstar i System 18i
Plumbproud rating for this boiler
91.13%

We have determined a rating of 91.13% for this Worcester Bosch Greenstar i System 18i System boiler on the PlumbProud quality scoring system. The rating is determined using a variety of important factors including price installed, manufacturer guarantees, energy efficiency and the likely cost of running.

On straightforward installations, we would expect to charge you £2,200 for this Worcester Bosch Greenstar i System 18i System boiler fully installed.

You can get more information and a free quote for the Worcester Bosch Greenstar I System 18i boiler by entering your postcode in the quote boxes on this page, clicking here to email us, or by giving us a call on 01604 343053.


Installed price guideline
£2,200

Get your free quote

Worcester Bosch Greenstar i System 18i Gas System boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty7 Years
Output in kW18 kW
Height710 mm
Width400 mm
Depth330 mm
MountingWall
ERP HeatA

Worcester Bosch Greenstar i System 18i System Gas boiler frequently asked questions

Is the Worcester Bosch Greenstar I System 18i boiler a combi, system or regular boiler?

The Worcester Bosch Greenstar I System 18i boiler is a system boiler you may wish to consider when looking for a new boiler for your house or flat.

Like heat only boilers, system boilers require a hot water cylinder to work - the cylinder stores and keeps water warm for use throughout the day. Hot water can be distributed to multiple showers and taps simultaneously, making system boilers suitable for larger families and properties with more than one bathroom.

System boilers differ from standard boilers in that they do not require a cold water tank, making them suitable for properties with no loft space or if you are planning a loft conversion. As the boiler's major components, including the circulation pump, are built-in and no water tank is required, system boilers are easier to install than regular boilers.

This type of boiler does not heat water instantly like a combi boiler - instead, you need to use the control panel to set the times when you want heating and hot water to be available for your home.

Is the Worcester Bosch Greenstar I System 18i system boiler suitable for my house or apartment?

Whether this Worcester Bosch Greenstar i System 18i System boiler is right for your property depends on its size or what its "output" level is. Size does not mean its physical dimensions, however - it means how powerful it is.

The output rating indicates how much energy a boiler can use in providing you with hot water and heat when you need it from your radiators and taps. The greater the output, the more water it can heat.

It's better to take advice on this from a registered installer because, if your boiler output is too low, your water and radiators might not get as hot as you would like them to be. However, if the output level is too high, you'll end up paying more on your gas bills than you need to.

Which types of property would this Worcester Bosch Greenstar i System 18i System boiler be appropriate for given its output of 18 kW?

Most experienced heating engineers would likely recommend that, at this level of output, this Worcester Bosch Greenstar i System 18i System boiler would be a suitable choice for smaller homes and apartments with up to 10 radiators and one bathroom.


How large is the Worcester Bosch Greenstar I System 18i?

The Worcester Bosch Greenstar I System 18i occupies a space of 710 mm high by 400 mm wide and 330 mm deep.

Is this Worcester Bosch boiler non-condensing or condensing?

We recommend that, if possible, you select one of the very latest condensing gas boilers on the market like the Worcester Bosch Greenstar I System 18i.

Condensing boilers are better for the environment because they capture and recycle the heat still present in flue exhaust gases and water vapour condensation for re-use, meaning lower greenhouse gas emissions.

They're also a lot cheaper to run meaning that, if you're replacing a very old and inefficient boiler, the savings on your gas bill over 5-10 years add up to more than you pay for the boiler itself.

Is the Worcester Bosch Greenstar I System 18i system good for the environment?

As the British public has become more conscious of climate change, many homeowners consider the environment when choosing how to heat their homes.

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.

Do the figures suggest that installing the Worcester Bosch Greenstar I System 18i system at your property would help in the fight against climate change?

By law, boilers manufactured and supplied in the UK must achieve a SEDBUK rating of "A" and work at a 92% minimum efficiency. Before April 2018, a minimum of 88% energy efficiency needed to be achieved (88/89% = SEDBUK "B" and 90% = SEDBUK "A").

Following official testing, the Worcester Bosch Greenstar I System 18i was given an efficiency rating of 94% with a SEDBUK rating of "A".

Energy efficiency is a measure of how much energy is used and how much is wasted when a boiler is operating.

In 2015, new legislation was introduced by the EU to encourage manufacturers to develop more energy-efficient products that emit fewer harmful gases throughout their lifetime.

The Energy Related Products Directive (ERP) applies to all products that consume energy, including during the manufacturing process, at the point of final disposal, and all points in between.

The ERP rating of the Worcester Bosch Greenstar I System 18i is "A".

Is this Worcester Bosch Greenstar I System 18i system covered by a warranty?

A parts and labour warranty of 7 years is included when you purchase the Worcester Bosch Greenstar I System 18i boiler through PlumbProud.


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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