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Worcester Bosch Greenstar 8000 Life 40kW boiler

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Plumbproud rating

90.12%

Worcester Bosch Greenstar 8000 Life 40kW Combi Gas boiler

Our PlumbProud boiler quality benchmark tests score this Worcester Bosch Greenstar 8000 Life 40kW Combi boiler at 90.12%. Several factors go into determining our rating including installation costs, manufacturer guarantees, energy efficiency, running costs, and more.

We would expect that, unless there are complications during fitting, this Worcester Bosch Greenstar 8000 Life 40kW Combi boiler would cost £2,500 supplied and professionally installed through PlumbProud.

Get a free, no-obligation Worcester Bosch Greenstar 8000 Life 40kW boiler quote today by simply entering your postcode in the box on this page. You can also speak to a boiler installation expert about heating for your home by getting in touch via email or by phone on 01604 343053.


Installed price around

£2,500

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Worcester Bosch Greenstar 8000 Life 40kW Combi Gas boiler frequently asked questions

Worcester Bosch Greenstar 8000 Life 40kW - a combi boiler, system boiler or regular boiler?

Worcester Bosch’s Greenstar 8000 Life 40kW is one you might consider if you’re looking for a combi boiler for your house or flat.

In many properties, combi boilers are more suitable than traditional types of boiler. Combi boilers heat water instantly on demand, which they draw directly from the mains supply, removing the need for storage tanks that can take up valuable space in your home.

A combi boiler is often the right choice for a smaller property, particularly if your home doesn't have a useable loft. As water is heated and delivered immediately rather than being kept warm for hours in an immersion tank, combi boilers reduce gas usage, thereby minimising your heating costs.

The main disadvantage of combi boilers is that they can only heat a certain amount of water at any one time. This means that, if two people are using different taps or showers within your home at the same time, the flow of heated water to each will be reduced, as will the water pressure and temperature.

Is the Worcester Bosch Greenstar 8000 Life 40kW combi boiler a suitable option for my house or flat?

Selecting the right boiler for your home means choosing a boiler that is the right size. And, by size, we don't mean how big it is, we mean how powerful it is - the "output".

Your boiler’s output is a measurement of the power it has available to it to heat the water you need for your radiators or for when you turn on a tap, bath or shower. A higher output rate means it has more power and can heat more water.

It's important to choose an output that matches the demand for water in your home because if your boiler has too low an output, you'll often find only lukewarm water comes out of your taps or heats your radiators. If it’s too high, you’ll be paying more for your gas than you need to.

The Worcester Bosch Greenstar 8000 Life 40kW combi has an output of 40 kW, so which types of property would this Worcester Bosch Greenstar 8000 Life 40kW Combi boiler be appropriate for?

Most heating engineers would recommend that this Worcester Bosch Greenstar 8000 Life 40kW Combi boiler would be suitable for larger properties including detached homes with 15 or more radiators and two or more bathrooms.

You need to consider the flow rate as well as the output rate when choosing a combi boiler.

Flow rates, measured in litres per minute, indicate how much water your boiler can heat and distribute around your home at any given time. If your family regularly use hot water around the house at the same time and you have a lot of radiators, you should choose a boiler with a high flow rate. This Worcester Bosch Greenstar 8000 Life 40kW Combi boiler's flow rate is 16 L/m.

However, you also need to consider the flow rate of your local mains water supply. Combis can only draw water from the mains as fast as the pipes can deliver it. If you choose a boiler with a 14l/m flow rate and the mains pipes into your home have a flow rate of 12l/m, your boiler won't be able to operate at full capacity. In other words, try to make sure the local water pressure and your boiler flow rates are as close as possible.

When our engineer comes out to quote you, they may recommend that you choose a heat only boiler or system boiler instead if your family's demand for hot water is higher than normal.


Where will the Worcester Bosch Greenstar 8000 Life 40kW fit in my house?

The dimensions of the Worcester Bosch Greenstar 8000 Life 40kW are 825 mm [H] x 440 mm [W] x 365 mm [D].

Is the Worcester Bosch Greenstar 8000 Life 40kW non-condensing or condensing?

The Worcester Bosch Greenstar 8000 Life 40kW is a condensing gas boiler - in fact, we recommend that you select this model or one of the latest condensing boilers on the market as the technology continues to improve over time.

Condensing boilers capture the heat still present in the flue exhaust gases and water vapour condensation created when the gas is burned and they recycle this back into the heating system to warm up the cold water re-entering the boiler from your radiators.

They're much more environmentally friendly and installing one results in much lower annual gas bills.

Is the Worcester Bosch Greenstar 8000 Life 40kW combi considered environmentally friendly?

How we heat our homes has become a major issue for many people worried about climate change and environmental issues in general.

In Britain's bigger cities, gas boilers, in particular, are responsible for dangerous levels of nitrogen dioxide emissions. Overall, 14% of all of the UK’s greenhouse gas production comes from heating our homes.

Would installing a Worcester Bosch Greenstar 8000 Life 40kW combi boiler in your home be a green choice? Let's look at the numbers.

The Worcester Bosch Greenstar 8000 Life 40kW has been awarded an efficiency rating of 94% and a SEDBUK band rating of "A".

In the UK, all boilers manufactured and supplied must have an energy efficiency rating of at least 92% or a SEDBUK "A" grade. Until April 2018, the minimum rating was 88% (88% and 89% are equivalent to a SEDBUK "B" rating and anything higher is rated "A").

A boiler's energy efficiency rating describes the amount of energy it uses and wastes when in normal operation.

The aim of the Energy Related Products (ERP) Directive 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 8000 Life 40kW is "A" for heat and "A" for water.

What warranty do I get if I purchase the Worcester Bosch Greenstar 8000 Life 40kW boiler?

A parts and labour warranty of 8 years is included when you purchase the Worcester Bosch Greenstar 8000 Life 40kW boiler through PlumbProud.


Worcester Bosch Greenstar 8000 Life 40kW Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty8 Years
Output in kW40 kW
Height825 mm
Width440 mm
Depth365 mm
MountingWall
Flow rate16 L/m
ERP HeatA
ERP WaterA

The top 10 rated Gas Combi boilers

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

1Vaillant ecoTEC Plus 82593.35%
2Vaillant ecoTEC Plus 83292.98%
3Worcester Bosch Greenstar 2000 25kW92.89%
4Viessmann Vitodens 050-W 29kW92.66%
5Vaillant ecoTEC Plus 83592.60%
6Worcester Bosch Greenstar CDi Compact 2892.57%
7Vaillant ecoFIT Pure 82592.39%
8Vaillant ecoTEC Plus 83892.16%
9Vaillant ecoTEC Exclusive IQ 83591.90%
10Vaillant ecoTEC Pro 2491.77%

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Worcester Bosch Greenstar 8000 Life 40kW boiler

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Worcester Bosch Greenstar 8000 Life 40kW Combi Gas boiler

  1. Home
  2. Worcester Bosch Greenstar 8000 Life 40kW
Plumbproud rating for this boiler
90.12%

We have determined a rating of 90.12% for this Worcester Bosch Greenstar 8000 Life 40kW Combi 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.

Expect this Worcester Bosch Greenstar 8000 Life 40kW Combi boiler to cost you £2,500 fully installed where there are no complications on the fit if you choose PlumbProud for this installation.

Get a free, no-obligation Worcester Bosch Greenstar 8000 Life 40kW boiler quote today by simply entering your postcode in the box on this page. You can also speak to a boiler installation expert about heating for your home by getting in touch via email or by phone on 01604 343053.


Installed price guideline
£2,500

Get your free quote

Worcester Bosch Greenstar 8000 Life 40kW Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty8 Years
Output in kW40 kW
Height825 mm
Width440 mm
Depth365 mm
MountingWall
Flow rate16 L/m
ERP HeatA
ERP WaterA

Worcester Bosch Greenstar 8000 Life 40kW Combi Gas boiler frequently asked questions

Is the Worcester Bosch Greenstar 8000 Life 40kW a regular, combi or system boiler?

If you are considering installing a combi boiler in your house or flat, then the Worcester Bosch Greenstar 8000 Life 40kW boiler is certainly worth investigating.

In the past, most boilers needed one or more storage tanks to operate - one to store warm water and the other for storing water to be heated later. But storage tanks are problematic in properties where space is at a premium and particularly where there is no loft. Many properties in the UK are small and so manufacturers introduced combi boilers in the 1970s to eliminate the need for tanks.

With a combi boiler, the hot water for your radiators and taps is delivered on demand. The boiler instantly heats water it draws directly from the mains internally. It then distributes the heated water around your home at mains pressure as you need it.

It is important to bear in mind that, while combi boilers have many benefits, they can only heat a certain volume of water at any given time. This means that, if you run a shower at the same time as someone else is doing the washing up in the kitchen, the volume of water passing to each point will drop, causing a fall in pressure.

Is the Worcester Bosch Greenstar 8000 Life 40kW combi suitable for my house or flat?

It's best to choose a boiler whose size or "output" is right for your property. With a boiler, however, size does not mean how big the boiler is, it means how much power it has.

The amount of hot water you get from showers, bathrooms, and sinks and heat from your radiators depends on your boiler's output (measured in kilowatts). The higher the level of output, the better your home will be heated and you can be more certain that the water from your taps will be as hot as you want.

However, you must be careful. You might not get the hot water you want if your boiler output is too low. If it's too high, you'll be paying more than you need to for gas.

With the Worcester Bosch Greenstar 8000 Life 40kW combi's output at 40 kW, which types of property would this Worcester Bosch Greenstar 8000 Life 40kW Combi boiler be most appropriate for?

Most experienced Gas Safe boiler installers would recommend this Worcester Bosch Greenstar 8000 Life 40kW Combi boiler as a suitable option for larger properties including detached homes with no more than 15 or more radiators and two or more bathrooms.

In addition to the output rate, you should consider a boiler's "flow rate" (measured in litres per minute) when choosing a combi boiler.

If you have a lot of radiators and bathrooms in your home and members of your household want to use hot water at the same time (like morning or evening showers and baths), you'll need a boiler with a high flow rate. This Worcester Bosch Greenstar 8000 Life 40kW Combi boiler's flow rate is 16 L/m.

However, it's not that simple. Combis can only draw water from the mains at the speed it's delivered. Homes with higher than average demand for hot water, and particularly those in low mains pressure areas, may find that a combi boiler is not the right answer for them.

When our engineer comes out to quote you, they may recommend that you choose a heat only boiler or system boiler instead to better serve you and your family.


The size of the Worcester Bosch Greenstar 8000 Life 40kW

The Worcester Bosch Greenstar 8000 Life 40kW is 825 mm tall, 440 mm wide, and 365 mm deep in size.

Greenstar 8000 Life 40kW – 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 8000 Life 40kW.

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 8000 Life 40kW combi boiler an environmentally friendly choice?

As more of us are increasingly concerned about climate change, how we heat our homes and its impact on the environment has become an issue of importance to homeowners.

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.

Will installing a Worcester Bosch Greenstar 8000 Life 40kW combi in your home be a positive contribution to the environment? The figures below will tell you more.

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 8000 Life 40kW 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, the Energy Related Products Directive (ERP) came into force. The legislation applies to all products that consume energy in production, during their active life, and at the point of final disposal.

The ERP was introduced to incentivise manufacturers to create products that emitted fewer harmful gases with the larger aim of protecting the wider environment.

The Worcester Bosch Greenstar 8000 Life 40kW has been awarded an ERP rating of "A" for heat and "A" for water.

What is the warranty period for the Worcester Bosch Greenstar 8000 Life 40kW?

The Worcester Bosch Greenstar 8000 Life 40kW boiler comes with a parts and labour warranty lasting 8 years.


The top 10 rated Gas Combi boilers

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

1Vaillant ecoTEC Plus 82593.35%
2Vaillant ecoTEC Plus 83292.98%
3Worcester Bosch Greenstar 2000 25kW92.89%
4Viessmann Vitodens 050-W 29kW92.66%
5Vaillant ecoTEC Plus 83592.60%
6Worcester Bosch Greenstar CDi Compact 2892.57%
7Vaillant ecoFIT Pure 82592.39%
8Vaillant ecoTEC Plus 83892.16%
9Vaillant ecoTEC Exclusive IQ 83591.90%
10Vaillant ecoTEC Pro 2491.77%
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