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Worcester Bosch Greenstar 8000 Style 45kW boiler

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Plumbproud rating

88.86%

Worcester Bosch Greenstar 8000 Style 45kW Combi Gas boiler

In our PlumbProud quality testing, this Worcester Bosch Greenstar 8000 Style 45kW Combi boiler scores 88.86%. We determine our rating based on a number of different factors including installation costs, manufacturer guarantees, energy efficiency, and operating costs.

We would expect this Worcester Bosch Greenstar 8000 Style 45kW Combi boiler to cost £2,900 fully installed through PlumbProud, although it will cost more if the fit is complicated. We will provide you with a full quote before starting work, however.

We offer free quotes and professional advice and guidance on whether the Worcester Bosch Greenstar 8000 Style 45kW is a suitable choice for your home via a phone call on 01604 343053. Alternatively, please click here to email us or enter your postcode in the quote boxes on this page.


Installed price around

£2,900

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Worcester Bosch Greenstar 8000 Style 45kW Combi Gas boiler frequently asked questions

Worcester Bosch Greenstar 8000 Style 45kW - a regular boiler, combi boiler or system boiler?

Looking for a gas combi boiler for your flat or house? Then the Worcester Bosch Greenstar 8000 Style 45kW may be an option you should consider.

Boilers traditionally required the installation of one or more large tanks around your property. These were filled with water that was either being heated or was to be heated later. British homes are among the smallest in the world so, to solve the space problem, manufacturers introduced combi boilers in the 1970s to offer homeowners the warmth and hot water supply they needed while taking up much less space.

A combi boiler is designed to heat both radiators and taps on demand and at the same time. Water from the mains passes through a combi boiler and the boiler's technology instantly turns it into hot water. Your boiler then distributes the hot water throughout your home.

The main disadvantage of combi boilers is that they have a maximum water volume capacity. What this means is that, if one person is using the shower while another uses a hot tap simultaneously, less water gets to each area, resulting in a fall in water pressure at both points.

Would the Worcester Bosch Greenstar 8000 Style 45kW combi be a suitable choice of boiler 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.

The output rate of a boiler tells you how much power it has available to it for heating the water that comes out of your taps and warms your radiators. A higher output rate means that your boiler has more power at its disposal.

You need to make sure you select a boiler with the right output rate. That's because, if your output rate is too high, then your boiler will have more power than it needs but it will cost too much to run. If the output rate is too low, your water may often not be hot enough.

The Worcester Bosch Greenstar 8000 Style 45kW combi's output is 45 kW, so which types of property would this Worcester Bosch Greenstar 8000 Style 45kW Combi boiler be appropriate for?

An experienced PlumbProud Gas Safe boiler installer would almost certainly recommend that this Worcester Bosch Greenstar 8000 Style 45kW Combi boiler would be most 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 Style 45kW Combi boiler's flow rate is 15 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.


What is the size of the Worcester Bosch Greenstar 8000 Style 45kW?

The Worcester Bosch Greenstar 8000 Style 45kW occupies a space of 825 mm high by 440 mm wide and 365 mm deep.

Worcester Bosch Greenstar 8000 Style 45kW – condensing or non-condensing?

The Worcester Bosch Greenstar 8000 Style 45kW is a condensing gas boiler - we strongly recommend that you choose one of the latest condensing models if possible.

With a condensing boiler, you save money on your gas bills because your boiler captures and recycles the heat present in the flue exhaust gases and water vapour condensation for re-use, meaning they operate far more economically and efficiently.

Is the Worcester Bosch Greenstar 8000 Style 45kW combi boiler environmentally friendly?

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.

Nitrogen dioxide emissions in Britain's largest cities are at dangerous levels and this has been caused by gas boilers. In fact, 14% of the UK’s greenhouse gases are produced by central heating.

Would choosing a Worcester Bosch Greenstar 8000 Style 45kW combi help the environment? Let’s see what the performance figures suggest.

The energy efficiency rating for a boiler describes the amount of energy it uses and wastes during operation and there are two different ways to measure it.

All boilers manufactured and supplied in the UK must have a SEDBUK rating of “A” subject to a minimum energy efficiency score of 92% or above. Before April 2018, the minimum energy efficiency score was 88% (88/89% = "B" SEDBUK rating, 90%+ = "A" SEDBUK rating).

The Worcester Bosch Greenstar 8000 Style 45kW scored an efficiency rating of 94% and a SEDBUK band rating of A.

The Energy Related Products (ERP) Directive is important European legislation that aims to limit energy use and harmful gas emissions during the manufacturing process, when the product is in use, and after it is disposed of.

For the Worcester Bosch Greenstar 8000 Style 45kW, the ERP Heat rating is "A" and the ERP Water rating is "A".

What warranty do I get if I purchase the Worcester Bosch Greenstar 8000 Style 45kW boiler?

The Worcester Bosch Greenstar 8000 Style 45kW is supplied with a parts and labour warranty of 8 years.


Worcester Bosch Greenstar 8000 Style 45kW Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty8 Years
Output in kW45 kW
Height825 mm
Width440 mm
Depth365 mm
MountingWall
Flow rate15 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 Style 45kW boiler

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Worcester Bosch Greenstar 8000 Style 45kW Combi Gas boiler

  1. Home
  2. Worcester Bosch Greenstar 8000 Style 45kW
Plumbproud rating for this boiler
88.86%

We have rated this Worcester Bosch Greenstar 8000 Style 45kW Combi boiler at 88.86% using the PlumbProud quality scoring system. To determine a rating, we weigh up a number of important considerations including the energy efficiency, estimated running costs, manufacturer's warranty, price of the boiler and more.

This Worcester Bosch Greenstar 8000 Style 45kW Combi boiler will cost around £2,900 fitted through PlumbProud where there are no complications during the installation.

For advice on whether this Worcester Bosch Greenstar 8000 Style 45kW Combi boiler is suitable for your home or to receive a free quotation on theWorcester Bosch Worcester Bosch Greenstar 8000 Style 45kW, 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 guideline
£2,900

Get your free quote

Worcester Bosch Greenstar 8000 Style 45kW Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty8 Years
Output in kW45 kW
Height825 mm
Width440 mm
Depth365 mm
MountingWall
Flow rate15 L/m
ERP HeatA
ERP WaterA

Worcester Bosch Greenstar 8000 Style 45kW Combi Gas boiler frequently asked questions

Is the Worcester Bosch Greenstar 8000 Style 45kW a regular, combi or system boiler?

Suitable for a house or a flat, the Worcester Bosch Greenstar 8000 Style 45kW combi boiler is worth considering if you want a combi boiler.

Traditional boilers would require you to install one or more storage tanks in your property. These tanks either kept the water warm or stored it for later heating. Manufacturers initially designed and introduced combi boilers to the market to offer homeowners the highest levels of warmth and unlimited hot water without taking up as much space.

Combi boilers provide hot water on demand for your radiators and taps. They take water directly from the mains, heat it immediately as it's needed, and then distribute the hot water around your home.

Combi boilers, however, are limited in terms of how much water they can heat at any given time. For example, if one person wishes to take a shower while another wants to turn on a hot water tap, the amount of water reaching each point drops. This results in a drop in the water pressure as well as the temperature.

Is the Worcester Bosch Greenstar 8000 Style 45kW combi boiler suitable for my house or apartment?

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

The output of a boiler is measured in kilowatts and tells you how much power it has available to heat the water it sends to your hot taps, showers and radiators. The greater the demand for hot water in your home, the larger the output you will need.

It is important to select a boiler with the optimal output rate. Choose one with too high an output and your gas bills will be too expensive. Choose one with too low an output and sometimes the water in your radiators and coming out of your taps will be barely lukewarm.

The output of the Worcester Bosch Greenstar 8000 Style 45kW combi is 45 kW kilowatts, so which types of property would this be most suitable for?

To most experienced Gas Safe boiler installers, the Worcester Bosch Greenstar 8000 Style 45kW combi Greenstar 8000 Style would be most suitable for larger properties including detached homes with 15 or more radiators and two or more bathrooms.

With combi boilers, flow rates are as important a consideration as output rates.

All combi boilers draw water from the mains. They then heat this water instantly whenever it's needed and distribute it to your radiators and taps.

A boiler's "flow rate" describes how much water a boiler can draw from the mains at any one time, which it then heats and sends around your home (measured in litres per minute). This Worcester Bosch Greenstar 8000 Style 45kW Combi boiler's flow rate is 15 L/m.

If your home has a large number of radiators, a lot of bathrooms, or multiple people who wish to use the hot water at the same time, your combi boiler may not be able to draw as much water from the mains as it needs to serve everyone, regardless of how high the flow rate is.

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 a Worcester Bosch Greenstar 8000 Style 45kW boiler?

The Worcester Bosch Greenstar 8000 Style 45kW measures 825 mm tall, 440 mm wide, and 365 mm deep.

Is the Worcester Bosch Greenstar 8000 Style 45kW 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 Style 45kW.

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 Style 45kW combi good for the environment?

How we heat our homes has become a pressing issue of concern for many homeowners worried about climate change and the environmental impact of their personal choices.

About 14% of the greenhouse gases we produce in the UK come from the power needed for central heating. In bigger British cities, gas boilers are a significant source of nitrogen dioxide emissions.

Would choosing the Worcester Bosch Greenstar 8000 Style 45kW combi boiler be an environmentally friendly decision? Here's what the figures say.

All boilers manufactured after April 2018 in the UK must be rated as an “A” on the SEDBUK grading system, subject to a minimum energy efficiency rating of 92% or above. Before that, the minimum rate was 88% - boilers with an energy efficiency of 88% or 89% were given a “B” rating. Boilers scoring 90% or more were given an "A" rating.

The energy efficiency rating for a boiler describes the amount of energy it uses and how much goes to waste in operation.

The Worcester Bosch Greenstar 8000 Style 45kW has an efficiency rating of 94% with a SEDBUK grade of "A".

The Energy Related Products (ERP) directive is Europe-wide legislation designed to reduce harmful gas emissions at all points of a product's life cycle - from the production process to its actual end use, right through to final disposal.

The Worcester Bosch Greenstar 8000 Style 45kW has a rating of "A" for heat and "A" for water.

What warranty do I get if I purchase the Worcester Bosch Greenstar 8000 Style 45kW boiler?

The Worcester Bosch Greenstar 8000 Style 45kW 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%
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