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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

Assessing factors including the system's running costs, its energy efficiency, the manufacturer’s guarantee, and its likely installed price, we scored this Worcester Bosch Greenstar CDi Highflow 440 Combi boiler 87.34% on our internal PlumbProud grading 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.

Get a free, no-obligation Worcester Bosch Greenstar CDi Highflow 440 boiler quote today by simply entering your postcode in the box on this page. You can also speak to a boiler installation expert about heating for your home by getting in touch via email or by phone 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 boiler a combi, regular or a system boiler?

The Worcester Bosch Greenstar CDi Highflow 440 is worthy of consideration if you're looking for a combi boiler for your flat or house.

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.

Is the Worcester Bosch Greenstar CDi Highflow 440 combi boiler from the Greenstar CDi Highflow range a suitable choice for my house or flat?

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, 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 CDi Highflow 440 combi is 30 kW, so which types of property is this Worcester Bosch Greenstar CDi Highflow 440 Combi boiler appropriate for?

An experienced boiler engineer would recommend that this Worcester Bosch Greenstar CDi Highflow 440 Combi boiler would provide adequate heating and hot water for medium-sized homes and larger apartments with up to 10-15 radiators and two bathrooms.

The Worcester Bosch Greenstar CDi Highflow 440 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 CDi Highflow 440 Combi boiler's flow rate is 20 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.


What are the dimensions of the Worcester Bosch Greenstar CDi Highflow 440 boiler?

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

If you want to replace your floor-standing boiler with a more compact, wall-mounted model, this will give you and your family more space. Hundreds of thousands of homes in the UK still use floor-standing boilers like the Worcester Bosch Greenstar CDi Highflow 440, but wall-mounted models have been the most popular choice for homeowners over the last two decades. We can replace your floor-mounted unit with a wall-mounted unit, but please be aware that the cost of installation will be higher if we need to replace your current piping.

However, you can recoup this investment in full over a few years with the savings you make on your gas bills.

Please be aware that if you replace your existing heat only or system boiler with the Worcester Bosch Greenstar CDi Highflow 440, you'll also need to remove your hot water cylinder and/or expansion tank.

Please contact PlumbProud for further advice if you are unsure how to proceed. Our friendly team will be happy to assist you in making the right decision.

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

The Worcester Bosch Greenstar CDi Highflow 440 is a condensing boiler – we recommend to all clients that they choose the very latest condensing boilers because their efficiency continues to improve year after year.

Condensing boilers recycle heat from both water vapour condensation and flue exhaust gases via a secondary heat exchanger. With this heat, it performs other tasks like warming up colder water returning from your radiator without having to use more gas.

You will save money on your gas bills every year by choosing a condensing boiler as well as benefitting the environment.

Is the Worcester Bosch Greenstar CDi Highflow 440 combi boiler good for the environment?

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.

Central heating systems are responsible for 14% of greenhouse gas emissions in the UK. You may also be aware that the gas boilers we use emit dangerous nitrogen dioxide in large volumes in the bigger British cities.

Is the Worcester Bosch Greenstar CDi Highflow 440 combi boiler an environmentally friendly choice for your home? Here’s what the figures say.

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 CDi Highflow 440 was given a 92% energy efficiency rating and a SEDBUK grading 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 CDi Highflow 440, the ERP rating is "A" for heat and "B" for hot water production.

What is the warranty period on a Worcester Bosch Greenstar CDi Highflow 440 combi boiler?

The Worcester Bosch Greenstar CDi Highflow 440 boiler comes with 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 boiler

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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%

In our PlumbProud quality testing, this Worcester Bosch Greenstar CDi Highflow 440 Combi boiler scores 87.34%. We determine our rating based on a number of different factors including installation costs, manufacturer guarantees, energy efficiency, and operating costs.

£3,100 is the amount you should budget to have this particular boiler installed on a straightforward installation.

You can speak to our friendly and professional advisors by calling 01604 343053. They can provide you with a free quotation on the Worcester Bosch Greenstar CDi Highflow 440 boiler and confirm that it is suitable for your home. You can also 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

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

The Worcester Bosch Greenstar CDi Highflow 440 is a combi boiler you may wish to consider if you want this particular type of boiler for your house or flat.

Traditional boilers need one or more large tanks to work - one to heat and keep water warm for immediate use and the other to store water intended for heating later. Finding space for these large tanks is difficult in British residential property - remember that our houses and flats are among the smallest in the world. This is the problem that combi boilers were designed to solve when they were introduced in the 1970s.

Combi boilers don't need a tank - instead, they instantly heat water drawn from the mains using technology inside the boiler. This hot water is then distributed immediately to your taps or radiators on demand.

The biggest disadvantage to combi boilers is that they have a maximum capacity for heating water, meaning that they work best when only one point within a household wants hot water. For example, if someone is taking a shower and another person uses a hot water tap at the same time, the water pressure, volume and temperature to both points drops.

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

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

The output of a boiler is measured in kilowatts and indicates how much energy it can use to heat the water needed for your radiators, taps and showers. The greater the output, the more water it can heat.

A boiler whose output is too high will give you hot water and warm radiators but also higher gas bills, whereas a boiler whose output is too low will result in cheaper gas bills but the water might not always be as hot as you want it to be.

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

Most Gas Safe boiler installers would likely recommend that, at this level of output, this Worcester Bosch Greenstar CDi Highflow 440 Combi boiler would be a suitable choice for medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.

The Worcester Bosch Greenstar CDi Highflow 440 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 CDi Highflow 440 Combi boiler's flow rate is 20 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.


Worcester Bosch Greenstar CDi Highflow 440 size

The Worcester Bosch Greenstar CDi Highflow 440 has the following dimensions - 850 mm high, 600 mm wide, and 600 mm deep.

Many homes in the UK still have floor-standing boilers like the Worcester Bosch Greenstar CDi Highflow 440, even though wall-hung boilers have become the product of choice for most homeowners over the last 20 years. If you'd like to replace your existing floor-standing boiler with a compact, wall-mounted boiler to create more space for you and your family, please bear in mind that your pipework may need to be replaced in addition to the cost of the boiler and its installation.

Savings on your gas bills will eventually completely pay for the one-time investment but it will take a few years.

Please be aware that if you replace your existing heat only or system boiler with the Worcester Bosch Greenstar CDi Highflow 440, you'll also need to remove your hot water cylinder and/or expansion tank.

Please contact PlumbProud for further advice if you are unsure how to proceed. Our friendly team will be happy to assist you in making the right decision.

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

The Worcester Bosch Greenstar CDi Highflow 440 is a condensing gas boiler - we strongly suggest that you choose either this model or a recently released model if at all possible.

A condensing boiler captures and recycles the warmth present in flue exhaust gases and water vapour condensation created by the burning of gas to warm up the water coming back into your boiler - for example, from your radiators.

Condensing boilers cost less to run (lower gas bills) and are better for the environment.

How environmentally friendly is the Worcester Bosch Greenstar CDi Highflow 440 combi?

With growing concern among the public about accelerating climate change, how we heat our homes and the impact this has on the environment has become a major topic of concern for 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.

Would installing a Worcester Bosch Greenstar CDi Highflow 440 combi boiler in your home help combat climate change? What do the figures suggest?

By law, boilers manufactured and supplied in the UK must achieve a SEDBUK rating of "A" and work at a 92% minimum efficiency. Before April 2018, a minimum of 88% energy efficiency needed to be achieved (88/89% = SEDBUK "B" and 90% = SEDBUK "A").

Following official testing, the Worcester Bosch Greenstar CDi Highflow 440 was given an efficiency rating of 92% with a SEDBUK rating of "A".

Energy efficiency is a measure of how much energy is used and how much is wasted when a boiler is operating.

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 CDi Highflow 440 has an ERP Heat rating of "A" and an ERP Water rating of "B".

How long is the warranty period on a Worcester Bosch Greenstar CDi Highflow 440 combi boiler?

On the Worcester Bosch Greenstar CDi Highflow 440, the manufacturer offers 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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