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Worcester Bosch Greenstar CDi Highflow 440 boiler

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Plumbproud rating

87.34%

Worcester Bosch Greenstar CDi Highflow 440 Combi Gas boiler

Using factors such as price installed, manufacturer guarantees, energy efficiency and the likely cost of running, among others, this model has been rated as scoring 87.34% on the PlumbProud boiler benchmarking system.

On a standard fit, we would expect this Worcester Bosch Greenstar CDi Highflow 440 Combi boiler to cost you £3,100 supplied and fully installed by an experienced Gas Safe PlumbProud fitter.

If you would like a free quote and professional advice and guidance to help you decide if the Worcester Bosch Greenstar CDi Highflow 440 is the right choice for your home, please get in touch. You can do this by entering your postcode in the quote boxes on this page, click here to email us or give us a call on 01604 343053.


Installed price around

£3,100

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Worcester Bosch Greenstar CDi Highflow 440 Combi Gas boiler frequently asked questions

Is the Worcester Bosch Greenstar CDi Highflow 440 a system, regular or combi boiler?

Suitable for a house or a flat, the Worcester Bosch Greenstar CDi Highflow 440 combi boiler is worth considering if you want a combi boiler.

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 a Worcester Bosch Greenstar CDi Highflow 440 combi the right 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 CDi Highflow 440 combi's output at 30 kW, which types of property would this Worcester Bosch Greenstar CDi Highflow 440 Combi boiler be most appropriate for?

Most experienced Gas Safe boiler installers would recommend that a boiler with this output level would be most suitable for medium-sized homes and larger apartments with 10-15 radiators and two 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 CDi Highflow 440 Combi boiler's flow rate is 20 L/m.

As with all combi boilers, the Worcester Bosch Greenstar CDi Highflow 440 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.


The size of the Worcester Bosch Greenstar CDi Highflow 440

The dimensions of the Worcester Bosch Greenstar CDi Highflow 440 are 850 mm [H] x 600 mm [W] x 600 mm [D].

If you use a floor-standing boiler like the Worcester Bosch Greenstar CDi Highflow 440 for your central heating and you're interested in replacing it with a more compact, wall-mounted boiler, you can. Wall-mounted boilers have been the most popular choice over the last two decades among homeowners wanting to create more space within their properties. Bear in mind that, while wall-mounted units are cheap, you may have to pay more for installation if your current piping needs replacing because it's not compatible with your new system.

This additional cost would however be recouped in full over a few years because of the savings you make on your quarterly gas bills.

You may have to increase your budget if you want to replace your existing heat only or system boiler with the Worcester Bosch Greenstar CDi Highflow 440 combi as we will also remove your hot water cylinder and/or expansion tank during installation.

For professional advice, information or guidance on the best choice and course of action for your home, please contact PlumbProud.

Is the Worcester Bosch Greenstar CDi Highflow 440 non-condensing or condensing?

Condensing gas boilers like the Worcester Bosch Greenstar CDi Highflow 440 are more energy-efficient and choosing one for your home will cut the amount you pay every year for your gas.

They do this by capturing the heat in water vapour condensation and in exhaust gases which would normally be expelled via the flue. They then recycle that heat, returning it to the system to, among other tasks, reheat colder water that is returning to your boiler from your radiators.

Is the Worcester Bosch Greenstar CDi Highflow 440 combi environmentally friendly?

Many homeowners are now worried about climate change and the damage they do to the environment from heating their homes has become a subject of increasing concern.

14% of the total amount of greenhouse gases produced by the UK comes from the central heating systems we use. In some of Britain's biggest cities, gas boilers create dangerous levels of nitrogen dioxide in the atmosphere.

Will installing a Worcester Bosch Greenstar CDi Highflow 440 combi in your home be a positive contribution to the environment? The figures below will tell you more.

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 CDi Highflow 440 was awarded an efficiency rating of "92%", equivalent to a "A" rating on the SEDBUK system.

The Energy Related Products Directive grades products according to the energy they consume and the harmful gas emissions they create, from manufacturing right through to final disposal, including how they're used by customers between these two points.

The Worcester Bosch Greenstar CDi Highflow 440 is rated "A" for heat and "B" for water.

How many years does the warranty period cover on a Worcester Bosch Greenstar CDi Highflow 440 boiler?

On the Worcester Bosch Greenstar CDi Highflow 440, the manufacturer offers a parts and labour warranty of 7 years.


Worcester Bosch Greenstar CDi Highflow 440 Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating92%
Band ratingA
LPG Compatible?Yes
P/L Warranty7 Years
Output in kW30 kW
Height850 mm
Width600 mm
Depth600 mm
MountingFloor
Flow rate20 L/m
ERP HeatA
ERP WaterB

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 CDi Highflow 440 Combi Gas boiler

  1. Home
  2. Worcester Bosch Greenstar CDi Highflow 440
Plumbproud rating for this boiler
87.34%

Based on a wide-ranging set of important factors including the cost to install the boiler, its energy efficiency rating, running costs, and so on, this Worcester Bosch Greenstar CDi Highflow 440 Combi boiler receives a score of 87.34% on our PlumbProud quality scoring system.

On straightforward installations, we would expect to charge you £3,100 for this Worcester Bosch Greenstar CDi Highflow 440 Combi boiler fully installed.

We recommend that you speak to our friendly advisors by calling 01604 343053 to seek professional advice on whether the Worcester Bosch Greenstar CDi Highflow 440 boiler is right for your home. Our team can also provide you with a free quotation for this Worcester Bosch Greenstar CDi Highflow 440 Combi boiler. Alternatively, click here to email us or enter your postcode into the quotation box on this page.


Installed price guideline
£3,100

Get your free quote

Worcester Bosch Greenstar CDi Highflow 440 Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating92%
Band ratingA
LPG Compatible?Yes
P/L Warranty7 Years
Output in kW30 kW
Height850 mm
Width600 mm
Depth600 mm
MountingFloor
Flow rate20 L/m
ERP HeatA
ERP WaterB

Worcester Bosch Greenstar CDi Highflow 440 Combi Gas boiler frequently asked questions

What type of boiler is the Worcester Bosch Greenstar CDi Highflow 440 - regular, system or combi?

The Worcester Bosch Greenstar CDi Highflow 440 is an option you may wish to consider if you’re looking for a combi boiler for your house or flat.

Traditional boilers consist of one or more large tanks that take up a lot of space in people's homes. One tank heats water and keeps it warm and the other stores water for heating later.

In contrast, a combi boiler is a much smaller stand-alone unit. Instead of requiring water tanks, it draws cold water from the mains. When hot water is needed for a shower, for the washing up, or the dishwasher, the cold water is heated instantly by the boiler and distributed to where it is needed.

The main disadvantage of combi boilers is that there is a limit to how much water they are capable of heating at the same time. For instance, water pressure, volume and temperature will be adversely affected if more than one individual in the home needs hot water at the same time.

Is a Worcester Bosch Greenstar CDi Highflow 440 combi boiler appropriate for my house or apartment?

Whether this Worcester Bosch Greenstar CDi Highflow 440 Combi boiler is right for where you live depends on its size or "output" level. Size does not mean its physical dimensions - it means how powerful it is.

A boiler’s output is a measurement of the amount of power it can use to provide hot water to your taps and radiators. The higher its output rate, the more water it can heat.

If your new boiler’s output is too low, your hot water might not be as hot as you want it to be. If it's too high, you’ll be paying more for gas than you need to.

The output of the Worcester Bosch Greenstar CDi Highflow 440 combi boiler is 30 kW, so which types of property would this be appropriate for?

Most heating engineers would recommend this Worcester Bosch Greenstar CDi Highflow 440 Combi boiler as a suitable option for medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.

You also need to choose a combi boiler with the right flow rate for where you live.

A combi boiler's flow rate is the maximum volume of water (measured in litres per minute) that it can heat and distribute to your radiators, taps and showers at the same time. This Worcester Bosch Greenstar CDi Highflow 440 Combi boiler's flow rate is 20 L/m.

However, combi boilers like the Worcester Bosch Greenstar CDi Highflow 440 draw water directly from the mains and heat it instantly.

If your mains pressure is 12 litres per minute, your boiler can only heat and distribute hot water at a rate of 12 litres per minute even if it has a higher flow rate.

Combi boilers also struggle when multiple people in your home want to use hot water at the same time - for example, someone running the hot water tap in the kitchen and two people wanting to shower in separate bathrooms.

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 CDi Highflow 440 boiler?

The size of the Worcester Bosch Greenstar CDi Highflow 440 boiler is 850 mm tall, 600 mm wide, and 600 mm deep.

Floor-standing boilers can still be found in hundreds of thousands of properties in the UK - however, many homeowners are considering switching to wall-mounted units to create new living space for themselves and their families. Our engineers can replace your current floor-standing unit with a wall-mounted model, although please be aware that we may need to charge more if your current pipework needs replacing.

Your investment will be worth it as you'll more than cover the cost with the saving you make every year on your gas bills.

When replacing an existing heat only or regular boiler with the Worcester Bosch Greenstar CDi Highflow 440, please be aware that you'll need to budget for the costs associated with removing your expansion tank/hot water cylinder.

For more information and advice, please contact PlumbProud today.

Is the Worcester Bosch Greenstar CDi Highflow 440 condensing or non-condensing?

We recommend that, if possible, you choose a condensing boiler like the Worcester Bosch Greenstar CDi Highflow 440.

Condensing boilers are more energy-efficient. They achieve this efficiency by capturing the heat present in flue exhaust gases and water vapour condensation and recycling that heat to, for example, warm colder water coming back from your radiators.

By choosing the latest condensing boiler, you'll also notice a significant reduction in your gas bills, particularly if you're replacing a boiler more than 15 years old.

Is the Worcester Bosch Greenstar CDi Highflow 440 combi boiler rated as environmentally friendly?

Many homeowners are becoming increasingly concerned about how they heat their homes and the impact it has on climate change and other important environmental issues.

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 installing a Worcester Bosch Greenstar CDi Highflow 440 combi boiler in your home be a green choice? Let's look at the numbers.

Under current UK law, all boilers must achieve a minimum energy efficiency level of 92% (a low to good SEDBUK "A" rating). The minimum level was raised from its previous 88% in April 2018.

Energy efficiency scores are intended to inform consumers of the amount of energy used and wasted when a boiler is in normal operation.

The Worcester Bosch Greenstar CDi Highflow 440 was awarded an efficiency rating of 92% with a SEDBUK band rating of "A".

The ERP, short for the Energy Related Products Directive, is a European directive aimed at encouraging manufacturers to create products that are environmentally friendlier at all stages, including during manufacturing, when the product is in active use, right through to the point of final disposal.

The Worcester Bosch Greenstar CDi Highflow 440 has a rating of "A" for heat and "B" for hot water production.

What warranty do I get if I purchase the Worcester Bosch Greenstar CDi Highflow 440 boiler?

The Worcester Bosch Greenstar CDi Highflow 440 is supplied with a parts and labour warranty of 7 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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