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Worcester Bosch Greenstar 8000 Style 35kW boiler

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Plumbproud rating

90.51%

Worcester Bosch Greenstar 8000 Style 35kW Combi Gas boiler

We have determined a rating of 90.51% for this Worcester Bosch Greenstar 8000 Style 35kW Combi 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.

We would expect this Worcester Bosch Greenstar 8000 Style 35kW Combi boiler to cost £2,500 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.

Get a better understanding of installation costs for the Worcester Bosch Greenstar 8000 Style 35kW by entering your postcode in the box supplied on this page. You can also call our professional team with any boiler-related queries on 01604 343053. Alternatively, please click here to email us.


Installed price around

£2,500

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Worcester Bosch Greenstar 8000 Style 35kW Combi Gas boiler frequently asked questions

Is the Worcester Bosch Greenstar 8000 Style 35kW a combi boiler, system boiler or regular boiler?

Looking for a gas combi boiler for your house or flat? If you are, the Worcester Bosch Greenstar 8000 Style 35kW boiler may be worth considering.

Combi boilers are excellent for providing hot water and heat for your radiators just when you need it. When you have a combi boiler installed in your home, you just turn on the tap and the hot water for your bath, shower, washing dishes and other activities is there when you need it. It also provides the heat you need to keep your radiators warm.

A combi boiler heats the cold water passing through it, which it draws from the mains. This newly heated water can then be distributed to whichever hot tap or radiator needs it.

In the past, boilers needed at least one storage tank to hold water that was either already heated or would be heated later. Sometimes, you'd have to wait for hot water because there was none left. In addition, storage tanks took up a lot of space and most UK homes are pretty small.

The main disadvantage to combi boilers is that they can only heat a certain amount of water at any one time, meaning the pressure, volume and temperature of water will decrease if more than one tap is on at the same time or if both the shower and washing machine are on together.

Would the Worcester Bosch Greenstar 8000 Style 35kW combi be a suitable boiler for my house or flat?

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 35kW 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 35kW combi boiler has an output level of 35 kW, so which types of property would it be appropriate for?

An experienced PlumbProud Gas Safe boiler installer would likely recommend that this Worcester Bosch Greenstar 8000 Style 35kW Combi boiler would be suitable for larger properties including detached homes with 15 or more radiators and two or more bathrooms.

The Worcester Bosch Greenstar 8000 Style 35kW is a combi boiler, which that means that you need to take the flow rate (measured in litres per minute) into account as well as the output rate. This Worcester Bosch Greenstar 8000 Style 35kW Combi boiler's flow rate is 13 L/m.

Combis draw water from the mains, instantly heating and distributing it where it's needed - taps, radiators, bathrooms, and so on.

However, this means that the flow rate of a boiler may effectively be capped by the flow rate of the mains water supply. For example, if your mains pressure is 12l/m, that is the maximum flow rate that your boiler can achieve even if you choose a boiler with a flow rate of 18l/m.

In addition, if your home has more than one bathroom, a high number of radiators, and more than one member of your household wants to use hot water at the same time regularly, the flow rate of both the boiler and the mains water pressure may not be high enough.

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.


How large is a Worcester Bosch Greenstar 8000 Style 35kW boiler?

The dimensions of the Worcester Bosch Greenstar 8000 Style 35kW are 825 mm [H] x 440 mm [W] x 365 mm [D].

Is the Worcester Bosch Greenstar 8000 Style 35kW a condensing or non-condensing boiler?

Condensing boilers convert the warmth present in flue exhaust gases and water vapour condensation into heat which they then recycle to increase the temperature of the colder water returning to your system.

We recommend that homeowners choose a condensing boiler like the Worcester Bosch Greenstar 8000 Style 35kW for this reason - the more recent your model the better because the technology improves every year.

You'll benefit from lower quarterly gas bills and condensing boilers are also much more environmentally friendly.

Is the Worcester Bosch Greenstar 8000 Style 35kW 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 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.

Will installing a Worcester Bosch Greenstar 8000 Style 35kW combi in your home be a positive contribution to the environment? The figures below will tell you more.

In the UK, by law, all boilers manufactured since April 2018 must have a SEDBUK “A” rating and operate to a minimum level of 92% energy efficiency. Prior to this, the minimum was 88% – 88/89% would score a "B" and 90% or more an "A" on the SEDBUK scale.

The energy efficiency rating measures the amount of energy a boiler consumes when it's in use and how much it loses on non-core operations.

Following testing, the Worcester Bosch Greenstar 8000 Style 35kW was given an efficiency rating of 94% and a SEDBUK grading of "A".

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 35kW has an ERP Heat rating of "A" and an ERP Water rating of "A".

What warranty does the Worcester Bosch Greenstar 8000 Style 35kW combi boiler come with?

Parts and labour charges incurred for repairs made to your new Worcester Bosch Greenstar 8000 Style 35kW are covered by a 8 year warranty.


Worcester Bosch Greenstar 8000 Style 35kW Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty8 Years
Output in kW35 kW
Height825 mm
Width440 mm
Depth365 mm
MountingWall
Flow rate13 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 35kW boiler

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Worcester Bosch Greenstar 8000 Style 35kW Combi Gas boiler

  1. Home
  2. Worcester Bosch Greenstar 8000 Style 35kW
Plumbproud rating for this boiler
90.51%

Our PlumbProud boiler quality benchmark tests score this Worcester Bosch Greenstar 8000 Style 35kW Combi boiler at 90.51%. Several factors go into determining our rating including installation costs, manufacturer guarantees, energy efficiency, running costs, and more.

This Worcester Bosch Greenstar 8000 Style 35kW Combi boiler is likely to cost you £2,500 supplied and fully installed through PlumbProud, although there may be additional charges if the fit takes longer than anticipated. You will, however, receive a binding quote from us prior to starting work.

Get a free quote on the Worcester Bosch Greenstar 8000 Style 35kW 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 guideline
£2,500

Get your free quote

Worcester Bosch Greenstar 8000 Style 35kW Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty8 Years
Output in kW35 kW
Height825 mm
Width440 mm
Depth365 mm
MountingWall
Flow rate13 L/m
ERP HeatA
ERP WaterA

Worcester Bosch Greenstar 8000 Style 35kW Combi Gas boiler frequently asked questions

Worcester Bosch Greenstar 8000 Style 35kW - a combi boiler, system boiler or regular boiler?

The Worcester Bosch Greenstar 8000 Style 35kW is a combi boiler you may wish to consider if you want this particular type of boiler for your house or flat.

Traditionally, most boilers required you to find space in your property for one or more large storage tanks. These tanks would either keep water warm or hold it in reserve for later heating. Manufacturers originally introduced combi boilers to offer homeowners the same level of warmth and hot water without taking up as much space – remember that the UK has some of the smallest homes in the Western world.

With a combi boiler, the hot water needed for your radiators and taps is provided on demand. Water from the mains passes through your combi boiler and the technology within it instantly heats the cold water. It then distributes that hot water around your home.

The biggest drawback for combi boilers is that they have a maximum capacity in volume for heating water. This means that if someone wants to use the shower while another person wants to use a hot water tap, the amount of water reaching each point falls, resulting in a drop in water pressure.

Is the Worcester Bosch Greenstar 8000 Style 35kW 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 35kW combi is 35 kW kilowatts, so which types of property would this be most suitable for?

Most heating engineers would recommend that this Worcester Bosch Greenstar 8000 Style 35kW Combi boiler would be suitable for larger properties including detached homes with 15 or more radiators and two or more bathrooms.

You'll also need to be sure to choose a combi boiler with the right flow rate for your home.

The flow rate indicates the maximum volume of hot water (measured in litres per minute) that your boiler can distribute at any given time. This means that if you and your family are likely to be using several taps and showers simultaneously or you have a lot of radiators, you need a boiler with a high flow rate. This Worcester Bosch Greenstar 8000 Style 35kW Combi boiler's flow rate is 13 L/m.

As with all combi boilers, the Worcester Bosch Greenstar 8000 Style 35kW is only able to heat and distribute water at the rate at which it actually enters your property.

For this reason, you shouldn't purchase a boiler with a very high flow rate if the flow rate in your mains pipes is lower because the extra capacity 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.


Making space for the Worcester Bosch Greenstar 8000 Style 35kW

The Worcester Bosch Greenstar 8000 Style 35kW is 825 mm [H] by 440 mm [W] by 365 mm [D] in size.

Is the Worcester Bosch Greenstar 8000 Style 35kW 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 35kW.

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.

How energy efficient is the Worcester Bosch Greenstar 8000 Style 35kW combi?

Concern for the environment is causing more and more homeowners to think about how they heat their homes and its impact on climate change.

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 Style 35kW combi boiler in your home help combat climate change? What do the figures suggest?

Every boiler manufactured and supplied in the UK must have an energy efficiency rating of 92% (SEDBUK “A” rating). These minimums were made law in April 2018 - before that, the minimum energy efficiency rating was 88% (88%/89% = "B" SEDBUK grade, 90%+ = "A" SEDBUK grade).

The Worcester Bosch Greenstar 8000 Style 35kW was awarded an efficiency rating of 94% and a band rating of "A".

Energy efficiency ratings for boilers describe the amount of energy they use and waste when switched on and working.

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 35kW are "A" for heat and "A" for hot water.

If the Worcester Bosch Greenstar 8000 Style 35kW breaks down, will I be covered by the warranty?

The Worcester Bosch Greenstar 8000 Style 35kW boiler is provided 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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