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Worcester Bosch Greenstar 2000 25kW boiler

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  2. Worcester Bosch Greenstar 2000 25kW
Plumbproud rating

92.89%

Worcester Bosch Greenstar 2000 25kW Combi Gas boiler

In our PlumbProud quality testing, this Worcester Bosch Greenstar 2000 25kW Combi boiler scores 92.89%. We determine our rating based on a number of different factors including installation costs, manufacturer guarantees, energy efficiency, and operating costs.

This Worcester Bosch Greenstar 2000 25kW Combi boiler is likely to cost around £1,800 fully installed by PlumbProud if there are no unexpected complications during the fit.

Get a free quote on the Worcester Bosch Greenstar 2000 25kW boiler and advice on whether this is the right choice for your home by entering your postcode in the quote box on this page, clicking here to email us, or giving us a call at 01604 343053.


Installed price around

£1,800

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 2000 25kW Combi Gas boiler frequently asked questions

Worcester Bosch Greenstar 2000 25kW - a regular boiler, combi boiler or system boiler?

If you are searching for a combi boiler for your house or flat, the Worcester Bosch Greenstar 2000 25kW is certainly one to consider.

Combi boilers were introduced by manufacturers in the 1970s to offer British homeowners a way to cheaply and reliably heat their homes and have hot water without taking up too much space. Previously, most boilers had one or more storage tanks, which either heated water and kept it warm or held water to be heated later.

With combi boilers, there is no need to find space for large tanks around your home as the hot water needed for your radiators and taps is available on demand. Combi boilers do this by drawing water from your mains supply, heating it instantly whenever you need it and then distributing it to where it's needed in the home.

The major disadvantage to combi boilers is that they have a maximum capacity for heating water. In a larger household, water pressure, volume and temperature will drop if two or more people are trying to use hot water at the same time.

Should I install a Worcester Bosch Greenstar 2000 25kW combi boiler in my home?

Whether this Worcester Bosch Greenstar 2000 25kW Combi boiler is right for where you live depends on its size or "output" level. Size does not mean its physical dimensions, however - it means how powerful it is.

Measured in kilowatts, a boiler's output level is an indication of the amount of power it has available to it to heat the water coming from your taps and for warming your radiators. The greater the output level, the more water it can heat.

If you choose a boiler whose output level is too low, you'll often find that the water is not as hot as you want it to be. If you choose a boiler whose level is too high, you'll be paying higher gas bills than you need to for years to come.

The output of the Worcester Bosch Greenstar 2000 25kW combi is 25 kW, so which types of property is this Worcester Bosch Greenstar 2000 25kW Combi boiler appropriate for?

A PlumbProud boiler engineer would recommend that this Worcester Bosch Greenstar 2000 25kW Combi boiler is suitable for smaller homes and apartments with up to 10 radiators and one bathroom.

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 2000 25kW Combi boiler is 10 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.


The size of the Worcester Bosch Greenstar 2000 25kW

The measurements of the Worcester Bosch Greenstar 2000 25kW are 724 mm by 400 mm by 300 mm.

Greenstar 2000 25kW – condensing or non-condensing?

Is the Worcester Bosch Greenstar 2000 25kW combi environmentally friendly?

With more and more of us concerned about environmental issues and climate change, how we heat our homes has become an important issue to many homeowners.

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.

If you decide to install a Worcester Bosch Greenstar 2000 25kW combi in your home, will you be helping the environment with your choice? Let’s have a look at the figures.

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 2000 25kW was awarded an efficiency rating of "93%", equivalent to a "A" rating on the SEDBUK system.

All products that consume energy throughout their lifespan must comply with the Energy Related Products (ERP) Directive.

Companies are legally obliged to reduce harmful gas emissions at all stages of a product's life cycle, from initial manufacturing right through to final disposal as well as when the product is in actual use.

The Worcester Bosch Greenstar 2000 25kW scores "A" for heat and "A" for water.

How long am I covered by the warranty for if the Worcester Bosch Greenstar 2000 25kW breaks down?

Parts and labour charges incurred during a repair on the Worcester Bosch Worcester Bosch Greenstar 2000 25kW boiler are covered by a 5 year warranty.


Worcester Bosch Greenstar 2000 25kW Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Efficiency rating93%
Band ratingA
LPG Compatible?Yes
P/L Warranty5 Years
Output in kW25 kW
Height724 mm
Width400 mm
Depth300 mm
MountingWall
Flow rate10 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 2000 25kW boiler

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Worcester Bosch Greenstar 2000 25kW Combi Gas boiler

  1. Home
  2. Worcester Bosch Greenstar 2000 25kW
Plumbproud rating for this boiler
92.89%

In our PlumbProud quality testing, this Worcester Bosch Greenstar 2000 25kW Combi boiler scores 92.89%. We determine our rating based on a number of different factors including installation costs, manufacturer guarantees, energy efficiency, and operating costs.

We would expect that, unless there are complications during fitting, this Worcester Bosch Greenstar 2000 25kW Combi boiler would cost £1,800 supplied and professionally installed through PlumbProud.

Wondering if the Worcester Bosch Greenstar 2000 25kW is the right boiler for your home? Then speak to a professional here by getting in touch via email or call us on 01604 343053. You can also get a free quote by entering your postcode in the box on the page.


Installed price guideline
£1,800

Get your free quote

Worcester Bosch Greenstar 2000 25kW Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Efficiency rating93%
Band ratingA
LPG Compatible?Yes
P/L Warranty5 Years
Output in kW25 kW
Height724 mm
Width400 mm
Depth300 mm
MountingWall
Flow rate10 L/m
ERP HeatA
ERP WaterA

Worcester Bosch Greenstar 2000 25kW Combi Gas boiler frequently asked questions

Is the Worcester Bosch Greenstar 2000 25kW boiler a combi, system or regular boiler?

If you are considering installing a combi boiler in your house or flat, then the Worcester Bosch Greenstar 2000 25kW boiler is certainly worth investigating.

Traditional boilers have one or more large tanks in which they store either heated water or water to be heated later. Manufacturers originally introduced combi boilers to the market in the 1970s to enable homeowners to save space - UK residential properties are among the smallest in the Western world.

Combi boilers don't need these tanks because they draw water directly from the mains and instantly heat it on demand thanks to the technology inside the boiler. Combi boilers then distribute this hot water to your home’s taps and radiators when needed.

The most significant disadvantage of combi boilers is that they are not ideal in larger homes where multiple people might want hot water at the same time – for example, if someone is having a shower while another wants to wash dishes in the kitchen. This is because combi boilers have a maximum volume of water that they can heat. When two people want hot water at the same time, the water temperature, pressure and volume delivered to both points drop.

Is a Worcester Bosch Greenstar 2000 25kW combi boiler 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 2000 25kW combi's output at 25 kW, which types of property would this Worcester Bosch Greenstar 2000 25kW Combi boiler be most appropriate for?

Most experienced boiler engineers would recommend this Worcester Bosch Greenstar 2000 25kW Combi boiler as a suitable option for smaller homes and apartments with no more than up to 10 radiators and one bathroom.

Flow rates are important when choosing a combi boiler as well as output rates.

A combi boiler's flow rate (measured in litres per minute) describes how much water it can instantly heat then distribute to the taps and radiators in your home - you will need to factor this into your decision on a new combi boiler. This Worcester Bosch Greenstar 2000 25kW Combi boiler's flow rate is 10 L/m.

If you have a lot of radiators and bathrooms in your home and there's lots of demand within your household for hot water at the same time (like morning or evening showers and baths), you'll need a boiler with a high flow rate.

However, it's not quite that simple. If your local mains water pressure is low, you're not going to gain any benefit from choosing a combi boiler with a high flow rate because that higher flow rate doesn't mean it can draw more water from the mains pipes.
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 2000 25kW boiler?

The Worcester Bosch Greenstar 2000 25kW boiler is 724 mm high, 400 mm wide, and 300 mm deep.

Is the Worcester Bosch Greenstar 2000 25kW non-condensing or condensing?

Is choosing the Worcester Bosch Greenstar 2000 25kW combi boiler environmentally friendly?

How we heat our homes and the effect that has on climate change has become important to many homeowners worried about the environment.

Dangerous levels of nitrogen dioxide emissions in larger UK cities are caused by gas boilers in domestic properties, and 14% of the UK’s greenhouse gas production is as a result of central heating.

Will choosing to install a Worcester Bosch Greenstar 2000 25kW combi in your home help the environment? Let's review the figures.

By law, the minimum level of energy efficiency for boilers manufactured in the UK is 92%, equivalent to a good SEDBUK “A” rating. Prior to April 2018, the minimum was 88% - boilers whose energy efficiency levels were 88% or 89% were given a "B" rating on the SEDBUK scale and those at 90% or higher were given an "A".

The energy efficiency rating awarded to each boiler indicates the amount of energy that is wasted when in operation.

Following testing, the Worcester Bosch Greenstar 2000 25kW was given a 93% energy efficiency rating and a SEDBUK grading 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 through to final disposal, with the aim of reducing harmful gas emissions.

The Worcester Bosch Greenstar 2000 25kW is rated "A" for heat and "A" for water.

How long is the warranty period on the Worcester Bosch Greenstar 2000 25kW combi boiler?

The Worcester Bosch Greenstar 2000 25kW is covered by a parts and labour warranty of 5 years following installation.


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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