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Worcester Bosch Greenstar 8000 Style 30kW boiler

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Plumbproud rating

91.18%

Worcester Bosch Greenstar 8000 Style 30kW Combi Gas boiler

We score this Worcester Bosch Greenstar 8000 Style 30kW Combi boiler as 91.18% on the PlumbProud quality scoring system. Our rating is based on various factors, including the installation price, the length of the manufacturer's warranty, and the expected energy efficiency and operating costs.

On most non-complicated installations, we would expect this Worcester Bosch Greenstar 8000 Style 30kW Combi boiler to cost £2,300 supplied and fully professionally installed.

You can get more information and a free quote for the Worcester Bosch Greenstar 8000 Style 30kW boiler by entering your postcode in the quote boxes on this page, clicking here to email us, or by giving us a call on 01604 343053.


Installed price around

£2,300

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Worcester Bosch Greenstar 8000 Style 30kW Combi Gas boiler frequently asked questions

Worcester Bosch Greenstar 8000 Style 30kW - a regular, combi or system boiler?

The Worcester Bosch Greenstar 8000 Style 30kW is a gas 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.

Would the Worcester Bosch Greenstar 8000 Style 30kW combi be a suitable choice of boiler for my house or flat?

You should make sure that the boiler you install in your property 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 has to be powerful enough to heat all the hot water you need for your radiators and taps. Power is measured in kilowatts and the more kilowatts a boiler has available to it, the more water it can heat.

If the output (measured in kilowatts) is too high, you'll have all the power you need and more but your gas bills will be much higher. If it's too low, you'll often find that the water coming out of your taps and fed into your radiators is only lukewarm.

With the Worcester Bosch Greenstar 8000 Style 30kW combi's output at 30 kW, which types of property would this Worcester Bosch Greenstar 8000 Style 30kW Combi boiler be most appropriate for?

A PlumbProud heating engineer would likely recommend that this Worcester Bosch Greenstar 8000 Style 30kW Combi boiler is suitable for medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.

You should also consider a combi boiler's "flow rate" when making your choice.

The flow rate indicates how much water it can take from the mains supply at any one time (measured in litres per minute), which it then heats and distributes to different points in your home like your bathroom, kitchen and radiators. This Worcester Bosch Greenstar 8000 Style 30kW Combi boiler's flow rate is 11 L/m.

Combi boilers have no storage tanks like system or heat only boilers. This means that if the water pressure where you live is low, there's no benefit in spending money on a combi with a high flow rate because a high flow rate doesn't mean it can draw any more water from the mains.

In addition, there might be lots of people in your household who want to use hot water at the same time while also having the central heating on. Given that average mains pressure in the UK is between 10 and 12 litres per second and a power shower usually requires about 12 litres of water per minute, a combi boiler might not be the right choice for you and your family.

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 8000 Style 30kW

The Worcester Bosch Greenstar 8000 Style 30kW measures 825 mm tall, 440 mm wide, and 365 mm deep.

Is the Worcester Bosch Greenstar 8000 Style 30kW condensing or non-condensing?

Because of their increased energy efficiency, we recommend to all customers that they select one of the latest condensing boilers. Condensing boilers capture the heat from water vapour condensation and flue exhaust gases and recycle that heat to warm water entering the boiler (for example, from your radiators).

The Worcester Bosch Greenstar 8000 Style 30kW is a condensing gas boiler and choosing this model will result in a likely substantial reduction in your fuel bills, particularly if you're replacing an older, inefficient, non-condensing boiler.

Is the Worcester Bosch Greenstar 8000 Style 30kW combi an environmentally friendly boiler?

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

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.

Do the available figures suggest that installing the Worcester Bosch Greenstar 8000 Style 30kW combi in your property would be an environmentally friendly choice?

All new British boilers must perform to a legal minimum energy efficiency of 92% (a low to good SEDBUK "A" rating). Prior to April 2018, the target was 88% (86-90% = SEDBUK "B" and 90%+ = SEDBUK "A").

Efficiency ratings are intended to let consumers know how much energy a boiler uses in its day-to-day activities and how much energy goes to waste.

The Worcester Bosch Greenstar 8000 Style 30kW was awarded an efficiency rating of 94%, equivalent to a SEDBUK grade of "A".

The ERP (or Energy Related Products Directive) is European legislation affecting products that consume energy throughout their lifetime.

The aim is to encourage companies to create environmentally friendlier products that reduce harmful gas emissions during manufacturing and when in use by the end client, right through to their eventual disposal.

In the case of the Worcester Bosch Greenstar 8000 Style 30kW, the ERP rating is "A" for heat and "A" for hot water production.

What warranty does the Worcester Bosch Greenstar 8000 Style 30kW combi boiler come with?

On the Worcester Bosch Greenstar 8000 Style 30kW, the manufacturer offers a parts and labour warranty of 8 years.


Worcester Bosch Greenstar 8000 Style 30kW Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty8 Years
Output in kW30 kW
Height825 mm
Width440 mm
Depth365 mm
MountingWall
Flow rate11 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 30kW Combi Gas boiler

  1. Home
  2. Worcester Bosch Greenstar 8000 Style 30kW
Plumbproud rating for this boiler
91.18%

In our PlumbProud quality testing, this Worcester Bosch Greenstar 8000 Style 30kW Combi boiler scores 91.18%. We determine our rating based on a number of different factors including installation costs, manufacturer guarantees, energy efficiency, and operating costs.

On straightforward installations, we would expect to charge you £2,300 for this Worcester Bosch Greenstar 8000 Style 30kW Combi boiler fully installed.

Please enter your postcode in the quote boxes on this page, email us, or call us on 01604 343053 to get a free quote and guidance on whether the Worcester Bosch Greenstar 8000 Style 30kW boiler is the right choice for your home.


Installed price guideline
£2,300

Get your free quote

Worcester Bosch Greenstar 8000 Style 30kW Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty8 Years
Output in kW30 kW
Height825 mm
Width440 mm
Depth365 mm
MountingWall
Flow rate11 L/m
ERP HeatA
ERP WaterA

Worcester Bosch Greenstar 8000 Style 30kW Combi Gas boiler frequently asked questions

Is the Worcester Bosch Greenstar 8000 Style 30kW a system boiler, a combi boiler or a regular boiler?

You might want to consider the Worcester Bosch Greenstar 8000 Style 30kW for your house or flat if you are looking for a combi boiler.

Traditionally, boilers needed one or more large tanks installed in your property to store their heated water or water that was to be heated later. These tanks were often too large to be practical for most homes so the combi boiler was introduced to Britain in the 1970s by manufacturers to help homeowners overcome this issue.

Instead of using tanks as storage, a combi boiler heats water on demand. It draws water from the mains and heats it instantly on demand before distributing it to wherever it is needed in a property, be it your taps or radiators.

Unfortunately, combi boilers have one main disadvantage for larger properties or larger households. Because they have a maximum volume of water that can be heated on demand at any given time, water pressure, volume and temperature will drop if, for example, someone is taking a shower and another person in your home wants to use a hot water tap at the same time.

Is the Worcester Bosch Greenstar 8000 Style 30kW combi suitable for my house or flat?

You should make sure that the boiler you install in your property is the right "size". And size doesn't mean its physical dimensions, size means how much power it has - the "output".

Your boiler should be able to cope with peak hot water demand in your property and not just your average hot water usage. The output rate of a boiler is measured in kilowatts and tells you how much power a boiler can use to provide hot water to your taps, showers and radiators.

If the output of your boiler is too low, there will often be times when your water isn't as hot as you want. But if your boiler output is too high, it will be more costly to run (often unnecessarily).

The output of the Worcester Bosch Greenstar 8000 Style 30kW combi boiler is 30 kW kilowatts. Which types of property would this be appropriate for?

A PlumbProud Gas Safe boiler installer would recommend that the level of output from this Worcester Bosch Greenstar 8000 Style 30kW Combi boiler would make it a suitable installation option for medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.

In addition to output rates, you need to consider a combi boiler's flow rate when making your choice.

The flow rate of your boiler dictates the maximum volume of water (measured in litres per minute) that it can heat and distribute to your taps, showers and radiators at any one time.

However, a combi boiler like the Worcester Bosch Greenstar 8000 Style 30kW can only heat and deliver water at the rate at which it actually enters your property. For this reason, you should also find out what the mains pressure to your house is before purchasing a boiler.

It's pointless spending more money on a boiler with a 17l/m flow rate if the local water pressure is 11l/m. To give you an indication of average water demand, a power shower typically requires 12 litres of water per minute and a basin tap 4-8 litres. This Worcester Bosch Greenstar 8000 Style 30kW Combi boiler's flow rate is 11 L/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.


What are the dimensions of the Worcester Bosch Greenstar 8000 Style 30kW boiler?

The size of the Worcester Bosch Greenstar 8000 Style 30kW boiler is 825 mm high, 440 mm wide, and 365 mm deep.

Is the Worcester Bosch Greenstar 8000 Style 30kW condensing or non-condensing?

Because of their increased energy efficiency, we recommend to all customers that they select one of the latest condensing boilers. Condensing boilers capture the heat from water vapour condensation and flue exhaust gases and recycle that heat to warm water entering the boiler (for example, from your radiators).

The Worcester Bosch Greenstar 8000 Style 30kW is a condensing gas boiler and choosing this model will result in a likely substantial reduction in your fuel bills, particularly if you're replacing an older, inefficient, non-condensing boiler.

Is the Worcester Bosch Greenstar 8000 Style 30kW combi an environmentally friendly boiler?

As the British public has become more conscious of climate change, many homeowners consider the environment when choosing how to heat their homes.

The power we need for our central heating systems accounts for around 14% of the UK’s greenhouse gas production. There are often dangerous levels of ambient nitrogen dioxide gases in the atmospheres of British cities because of our use of gas boilers.

If you decide to install a Worcester Bosch Greenstar 8000 Style 30kW combi in your home, will you be helping the environment with your choice? Let’s have a look at the figures.

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 30kW has an efficiency rating of 94% with a SEDBUK grade of "A".

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 30kW are "A" for heat and "A" for hot water.

Am I covered if my Worcester Bosch Greenstar 8000 Style 30kW combi boiler breaks down?

The Worcester Bosch Greenstar 8000 Style 30kW 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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