GET A COMPETITIVE QUOTE

Please enter your postcode below to get a free, no obligation, personalised quotation from PlumbProud

Worcester Bosch Greenstar 8000 Style 40kW boiler

  1. Home
  2. Worcester Bosch Greenstar 8000 Style 40kW
Plumbproud rating

89.77%

Worcester Bosch Greenstar 8000 Style 40kW Combi Gas boiler

On the PlumbProud quality scoring system, we rate this Worcester Bosch Greenstar 8000 Style 40kW Combi boiler 89.77%. To determine our rating, we take lots of different factors into consideration from price installed to manufacturer guarantees, energy efficiency, likely cost of running, and more.

On most non-complicated installations, we would expect this Worcester Bosch Greenstar 8000 Style 40kW Combi boiler to cost £2,600 supplied and fully professionally installed.

For advice on whether this Worcester Bosch Greenstar 8000 Style 40kW Combi boiler is suitable for your home or to receive a free quotation on theWorcester Bosch Worcester Bosch Greenstar 8000 Style 40kW, please call 01604 343053 to speak to one of our team. Alternatively, click here to email us or enter your postcode into the quotation box on this page.


Installed price around

£2,600

GET A COMPETITIVE BOILER QUOTE

Please enter your postcode below to get a personalised quotation for the perfect boiler for your home

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

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

You might want to consider the Worcester Bosch Greenstar 8000 Style 40kW for your house or flat if you are looking for a combi boiler.

One of the reasons the combi boiler was introduced to Britain in the 1970s was because residential properties are among the smallest in the world. More traditional boilers require one or more large tanks to be stored around the home to function.

A combi boiler is a self-contained unit that draws water from the mains then heats and distributes it instantly and on demand - no tanks are needed.

They are the most popular type of boilers in the UK and offer only one major disadvantage - there is a maximum volume of water that can be heated at any one time. If that limit is exceeded by, for example, two people using a hot water tap at the same time, there will be a drop in water pressure, temperature and volume to both taps.

Is a Worcester Bosch Greenstar 8000 Style 40kW combi boiler appropriate for my house or apartment?

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

This Worcester Bosch Greenstar 8000 Style 40kW Combi boiler gets its power from gas and the power it's capable of producing is measured in kilowatts - the output rate is actually a kilowatt rate. The higher the output rate, the more kilowatts a boiler can use when heating water.

If you choose a boiler whose output rate is too low, it may not have enough power to make your water as hot as you would like. If you choose a boiler whose output rate is too high, you won't have to put up with lukewarm water but you will face higher gas bills.

The Worcester Bosch Greenstar 8000 Style 40kW combi boiler has an output level of 40 kW, so which types of property would it be appropriate for?

To most experienced Gas Safe boiler installers, the Worcester Bosch Greenstar 8000 Style 40kW combi Greenstar 8000 Style would be most suitable for larger properties including detached homes with 15 or more radiators and two or more bathrooms.

When choosing a combi boiler like the Worcester Bosch Greenstar 8000 Style 40kW, you need to consider the "flow rate" as well as the output rate. Flow rates (measured in litres per minute) indicate the volume of hot water that the boiler can heat up and then distribute to your taps and radiators.

However, combi boilers draw water from the mains and this means they can only heat the amount of water that actually enters your property.

What this means is that, if your mains pressure is 12 litres per minute, that is your boiler's effective flow rate even if it has the capacity to process 18 litres per minute. This Worcester Bosch Greenstar 8000 Style 40kW Combi boiler's flow rate is 14 L/m.

To give you an idea of the flow rate you might need, a power shower typically requires around 12 litres of water per minute and a basin tap requires 4-8 litres per minute.

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.


What size is the Worcester Bosch Greenstar 8000 Style 40kW boiler?

The Worcester Bosch Greenstar 8000 Style 40kW boiler measures 825 mm [H] x 440 mm [W] x 365 mm [D] in size.

Worcester Bosch Greenstar 8000 Style 40kW – condensing or non-condensing?

This Worcester Bosch Greenstar 8000 Style 40kW 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 8000 Style 40kW combi environmentally friendly?

More and more homeowners are aware of the importance of how we heat our homes and its impact on climate change and other environmental issues.

Central heating accounts for 14% of greenhouse gas emissions in the UK. In larger British cities, gas boilers emit dangerous levels of nitrogen dioxide into the atmosphere.

If you would like your next boiler to help in the fight against climate change, would the Worcester Bosch Greenstar 8000 Style 40kW combi be a suitable choice?

The energy efficiency rating of the Worcester Bosch Greenstar 8000 Style 40kW is 94% with a SEDBUK band rating of "A".

Energy efficiency tests record how much energy is wasted on non-core functions during an operation.

By law, all boilers manufactured and supplied in the UK must have a minimum energy efficiency performance level of 92% (equivalent to a SEDBUK "A" grade). Up to April 2018, the minimum performance level was 88% (88% and 89% are equivalent to a SEDBUK "B" grade and 90%+ an "A" grade).

The ERP (Energy Related Products Directive) is European legislation that aims to reduce the use of energy at all points during a product's life, from the point of manufacture to when it's in active use right through to final disposal.

The regulation aims is to encourage manufacturers to create products that are more environmentally friendly and which reduce the harmful gas emissions associated with those products.

The ERP gradings for the Worcester Bosch Greenstar 8000 Style 40kW are "A" for heat and "A" for hot water.

Am I covered if the Worcester Bosch Greenstar 8000 Style 40kW combi boiler breaks down?

You receive a parts and labour warranty of 8 years with the Worcester Bosch Greenstar 8000 Style 40kW boiler.


Worcester Bosch Greenstar 8000 Style 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 rate14 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%

Combi boilers

Choose from the UK’s biggest range of combis

Heat only boilers

The ideal boiler perfect for the largest homes

System boilers

Ideal for 3+ bedroom, 2+ bathroom homes

Boiler quote

Free, no obligation quote from our engineer

Worcester Bosch Greenstar 8000 Style 40kW boiler

We will not be beaten on price -
ask us about our PRICE GUARANTEE!

Worcester Bosch Greenstar 8000 Style 40kW Combi Gas boiler

  1. Home
  2. Worcester Bosch Greenstar 8000 Style 40kW
Plumbproud rating for this boiler
89.77%

Our PlumbProud boiler quality benchmark tests score this Worcester Bosch Greenstar 8000 Style 40kW Combi boiler at 89.77%. Several factors go into determining our rating including installation costs, manufacturer guarantees, energy efficiency, running costs, and more.

On a standard fit, we would expect this Worcester Bosch Greenstar 8000 Style 40kW Combi boiler to cost you £2,600 supplied and fully installed by an experienced Gas Safe PlumbProud fitter.

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 8000 Style 40kW 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
£2,600

Get your free quote

Worcester Bosch Greenstar 8000 Style 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 rate14 L/m
ERP HeatA
ERP WaterA

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

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

If you are searching for a combi boiler for your house or flat, the Worcester Bosch Greenstar 8000 Style 40kW is certainly one to consider.

Combination or combi boilers are highly efficient and save a lot of space in your home. Combi boilers heat water directly from the mains when you turn on a tap and, as a result, you don’t need a hot water storage cylinder or a cold water tank in the roof space.

These boilers are, therefore, suitable for smaller homes and especially those without a loft. They are also cost-effective as the water is heated instantly and distributed on demand rather than being stored. Combi boilers are the most popular type of boilers in the UK and replacing an older boiler with a new combi boiler will reduce your gas bills significantly.

However, there are downsides to this type of boiler. If you take a shower while someone else is using a tap, less water will reach each point of usage at lower rates of pressure and temperatures as combi boilers can only heat a certain volume of water at any given time.

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

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.

Boiler output is measured in kilowatts and tells you how much power a boiler can use to heat the water your taps, showers and radiators need. The higher the output, the more power it has.

When choosing a boiler, you should choose one that can cope with the peak demand for hot water in your home and not just your typical usage.

If its output is too low, sometimes your hot water will not be hot enough, but if your boiler's output is too high for your needs, your gas bills will go up and not down.

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

Most experienced Gas Safe engineers would likely recommend that, at this level of output, this Worcester Bosch Greenstar 8000 Style 40kW Combi boiler would be a suitable choice for larger properties including detached homes with 15 or more radiators and two or more bathrooms.

With combi boilers, you need to consider the flow rate as well as the output rate. The flow rate (shown in litres per minute) measures how much water your boiler can draw from the mains which it then instantly heats and distributes to your taps and radiators.

However, a high flow rate is of little to no value if your local water pressure is low. If your local mains water pressure is 10l/m and your flow rate is 12l/m, your boiler will only be able to process 10l/m.

If you live in an area with high water pressure but your household has multiple bathrooms and/or radiators and many members of your household want to use hot water at the same time (like morning or evening baths or showers), it's unlikely that you'll be able to find a combi with a high enough flow rate.

As an indication, a power shower needs about 10 litres of water per minute, whereas the flow rate of this Worcester Bosch Greenstar 8000 Style 40kW Combi boiler is 14 L/ml/m.

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 Style 40kW fit in my house?

The Worcester Bosch Greenstar 8000 Style 40kW is 825 mm in height, 440 mm in width and 365 mm in depth.

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

The Worcester Bosch Greenstar 8000 Style 40kW is a condensing gas boiler - this is the type of boiler we recommend to most clients because they're better for the environment and they will save money on annual fuel bills.

A condensing boiler captures and recycles the warmth still present in both the flue exhaust gases and water vapour condensation created when gas is burned to provide your boiler with power.

This means it needs less gas to operate and it uses this extra energy to perform a number of tasks, including heating the colder water that comes back to the boiler from the radiators in your home.

Is the combi Worcester Bosch Greenstar 8000 Style 40kW boiler energy efficient?

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 produces 14% of all greenhouse gas emissions in the UK. Gas boilers in the larger cities emit dangerous levels of nitrogen dioxide.

Is the Worcester Bosch Greenstar 8000 Style 40kW combi boiler an environmentally friendly choice for your home? Here’s what the figures say.

An energy efficiency rating of 92% or above is a legal requirement for all boilers manufactured and installed in the UK today. 92% is equivalent to a low-to-middle "A" grade on the "Seasonal Efficiency of Domestic Boilers" (SEDBUK) scale.

Energy efficiency measures how much energy a boiler uses and wastes in the course of its normal operation. The lower the waste, the lower your gas bills.

The Worcester Bosch Greenstar 8000 Style 40kW was awarded an efficiency rating of "94%", equivalent to a "A" rating on the SEDBUK system.

The Energy Related Products Directive (ERP) is European legislation that applies to all products which use or consume energy during their lifespan, including during the manufacturing process and when they're in actual use, right through to the point of final disposal.

The aim is to encourage manufacturers to create new products that are kinder to the environment and create fewer harmful gas emissions.

The Worcester Bosch Greenstar 8000 Style 40kW has an ERP Heat rating of "A" and an ERP Water rating of "A".

Does the Worcester Bosch Greenstar 8000 Style 40kW combi boiler come with a warranty?

The Worcester Bosch Greenstar 8000 Style 40kW is supplied with a parts and labour warranty of 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%
Menu