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Worcester Bosch Greenstar CDi Compact 28 boiler

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Plumbproud rating

92.57%

Worcester Bosch Greenstar CDi Compact 28 Combi Gas boiler

On the PlumbProud quality scoring system, we rate this Worcester Bosch Greenstar CDi Compact 28 Combi boiler 92.57%. To determine our rating, we take lots of different factors into consideration from price installed to manufacturer guarantees, energy efficiency, likely cost of running, and more.

We estimate that this Worcester Bosch Greenstar CDi Compact 28 Combi boiler will cost £2,000 fully installed through PlumbProud provided that the fit is straightforward.

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 CDi Compact 28 boiler is the right choice for your home.


Installed price around

£2,000

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 CDi Compact 28 Combi Gas boiler frequently asked questions

Is the Worcester Bosch Greenstar CDi Compact 28 a combi, system or regular boiler?

The Worcester Bosch Greenstar CDi Compact 28 is a gas combi boiler.

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 the Worcester Bosch Greenstar CDi Compact 28 combi boiler a suitable option for my house or flat?

Whether this Worcester Bosch Greenstar CDi Compact 28 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 Compact 28 combi boiler is 28 kW, so which types of property would this be appropriate for?

An experienced boiler engineer would recommend that this Worcester Bosch Greenstar CDi Compact 28 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.

With all combi boilers, you need to consider the "flow rate" as well as the output rate when making your decision.

Like all combi boilers, the Worcester Bosch Greenstar CDi Compact 28 draws water from the mains. It instantly heats that water and then distributes it to the parts of your home which need it - taps, radiators, bathrooms, and so on. This Worcester Bosch Greenstar CDi Compact 28 Combi boiler's flow rate is 11 L/m.

There is no benefit to purchasing a boiler with a high flow rate if the local water pressure is not that good - a high flow rate doesn't mean that your combi can draw more water from the mains.

In addition, if you live in a home with a large number of radiators and more than one bathroom and if more than one person regularly wants to use hot water at a time, a combi boiler may struggle to provide enough water at a hot enough temperature.

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 dimensions of the Worcester Bosch Greenstar CDi Compact 28 are

The measurements of the Worcester Bosch Greenstar CDi Compact 28 are 680 mm by 390 mm by 280 mm.

Is the Worcester Bosch Greenstar CDi Compact 28 a condensing or non-condensing boiler?

The Worcester Bosch Greenstar CDi Compact 28 is a condensing gas boiler - where possible, we always recommend to clients that they choose one of the very latest condensing boilers to take advantage of this technology, which improves year after year.

Condensing boilers are more energy-efficient as they capture and recycle the heat contained in flue exhaust gases and water vapour condensation. They then use this heat to perform tasks like warming up colder water returning to the boiler from the radiators.

By choosing a condensing boiler, you'll help the environment as well as save money on your gas bills.

Is the Worcester Bosch Greenstar CDi Compact 28 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.

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.

Will choosing to install a Worcester Bosch Greenstar CDi Compact 28 combi in your home help the environment? Let's review the figures.

Boilers manufactured after April 2018 in the UK must achieve an "A" on the SEDBUK grading system as well as score a minimum of 92% on a separate energy efficiency test. Prior to that, the minimum was 88% - boilers rated at 88% and 89% were given a “B” rating (90% and higher were given an "A").

An energy efficiency rating describes how much energy the boiler uses and how much it wastes when in use.

The Worcester Bosch Greenstar CDi Compact 28 was awarded an efficiency rating of 90.5% with a SEDBUK grading of "A".

The Energy Related Products Directive intends to encourage all manufacturers to reduce the harmful gas emissions associated with the products they make, from the manufacturing stage to final disposal, including when they are in active use.

The Worcester Bosch Greenstar CDi Compact 28 has an ERP rating of "A" for heat and "A" for hot water.

What length of warranty does the Worcester Bosch Greenstar CDi Compact 28 come with?

You receive a parts and labour warranty of 7 years with the Worcester Bosch Greenstar CDi Compact 28 boiler.


Worcester Bosch Greenstar CDi Compact 28 Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating90.5%
Band ratingA
LPG Compatible?Yes
P/L Warranty7 Years
Output in kW28 kW
Height680 mm
Width390 mm
Depth280 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 CDi Compact 28 boiler

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Worcester Bosch Greenstar CDi Compact 28 Combi Gas boiler

  1. Home
  2. Worcester Bosch Greenstar CDi Compact 28
Plumbproud rating for this boiler
92.57%

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 Compact 28 Combi boiler 92.57% on our internal PlumbProud grading system.

We would anticipate that this Worcester Bosch Greenstar CDi Compact 28 Combi boiler would cost you £2,000 fully installed through PlumbProud provided that the fitting is standard and with no complications.

To receive a free quote on the Worcester Bosch Greenstar CDi Compact 28 and to get professional guidance and advice on whether this Worcester Bosch Greenstar CDi Compact 28 Combi boiler is the right choice for your home, please call us on 01604 343053, enter your postcode in the quote boxes on this page, or click here to email us.


Installed price guideline
£2,000

Get your free quote

Worcester Bosch Greenstar CDi Compact 28 Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating90.5%
Band ratingA
LPG Compatible?Yes
P/L Warranty7 Years
Output in kW28 kW
Height680 mm
Width390 mm
Depth280 mm
MountingWall
Flow rate11 L/m
ERP HeatA
ERP WaterA

Worcester Bosch Greenstar CDi Compact 28 Combi Gas boiler frequently asked questions

Worcester Bosch Greenstar CDi Compact 28 - a regular, combi or system boiler?

If you’re looking for a combi boiler for your house or flat, then the Worcester Bosch Greenstar CDi Compact 28 is one you may wish to consider.

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.

Should I install a Worcester Bosch Greenstar CDi Compact 28 combi boiler in my home?

Selecting the right boiler for your property means selecting a boiler that is the right "size". And, by size, we don't mean how big it is, we mean how powerful it is - its "output".

The output rate tells you how much energy your boiler has to use to provide you and your family with hot water and central heating. A higher output rate means that it can heat greater volumes of water.

Please be aware, though - if you choose a boiler whose output is too low, the water in your radiators and coming from your taps may not be warm enough. Conversely, if you choose a boiler with too high an output, you'll pay more for gas than is necessary.

The Worcester Bosch Greenstar CDi Compact 28 combi boiler has an output level of 28 kW, so which types of property would it be appropriate for?

An experienced heating engineer would recommend that the Worcester Bosch Greenstar CDi Compact 28 combi boiler is a suitable choice for medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.

Please remember to consider "flow rates" as well when choosing your new boiler. All combi boilers including the Worcester Bosch Greenstar CDi Compact 28 draw water from the mains.

Each combi boiler has its own flow rate (measured in litres per minute) - this tells you how much water it can heat and distribute to your home’s taps and radiators straight from the mains. This Worcester Bosch Greenstar CDi Compact 28 Combi boiler's flow rate is 11 L/m.

There is no benefit to you in choosing a combi with a high flow rate if your mains pressure is low - save money by buying a boiler whose flow rate is equal to or slightly more than the pressure in your water pipes.

In addition, if you have a lot of radiators and bathrooms in your home or you have a large household that often uses lots of hot water at the same time, like for regular morning and evening showers, a combi boiler may not be suitable.

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 CDi Compact 28 boiler?

The size of the Worcester Bosch Greenstar CDi Compact 28 boiler is 680 mm tall, 390 mm wide, and 280 mm deep.

Is the Worcester Bosch Greenstar CDi Compact 28 non-condensing or condensing?

The Worcester Bosch Greenstar CDi Compact 28 is a condensing gas boiler - where possible, we always recommend to clients that they choose one of the very latest condensing boilers to take advantage of this technology, which improves year after year.

Condensing boilers are more energy-efficient as they capture and recycle the heat contained in flue exhaust gases and water vapour condensation. They then use this heat to perform tasks like warming up colder water returning to the boiler from the radiators.

By choosing a condensing boiler, you'll help the environment as well as save money on your gas bills.

Is the Worcester Bosch Greenstar CDi Compact 28 combi 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.

Central heating creates 14% of the UK’s greenhouse gases. And in Britain's larger cities, gas boilers are responsible for dangerous levels of nitrogen dioxide emissions.

Would choosing a Worcester Bosch Greenstar CDi Compact 28 combi help in the fight against climate change? What do the performance statistics suggest?

All boilers manufactured and installed in the UK are required by law to have an energy efficiency rating of at least 92%, equivalent to a good “A” rating on the SEDBUK scale. Before this, the minimum was 88% (ratings of 88% and 89% are equivalent to a high “B” SEDBUK rating and anything 90% or higher is an "A" rating).

A boiler's energy efficiency rating is designed to let you know how much energy is used and wasted during normal functioning.

The Worcester Bosch Greenstar CDi Compact 28 was given an efficiency rating of 90.5% and a band rating of "A".

The aim of the Energy Related Products (ERP) Directive is to reduce the harmful gas emissions created during a product’s manufacture and active end use right through to its disposal.

The ERP rating for the Worcester Bosch Greenstar CDi Compact 28 is "A" for heat and "A" for water.

How long is the warranty offered by the manufacturer for the Worcester Bosch Greenstar CDi Compact 28 boiler?

Worcester Bosch’s Greenstar CDi Compact 28 boiler includes 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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