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Glow Worm Energy 25kW boiler

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Plumbproud rating

76.97%

Glow worm Energy 25kW Combi Gas boiler

Our PlumbProud boiler quality benchmark tests score this Glow worm Energy 25kW Combi boiler at 76.97%. Several factors go into determining our rating including installation costs, manufacturer guarantees, energy efficiency, running costs, and more.

This Glow worm Energy 25kW Combi boiler is likely to cost you £1,800 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.

For professional advice on whether the Glow Worm Energy 25kW is the right boiler for your home or to receive a free quotation, please call 01604 343053 to speak to our friendly team. You are also welcome to email us by clicking here or you can enter your postcode into the quotation box on this page.


Installed price around

£1,800

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Glow worm Energy 25kW Combi Gas boiler frequently asked questions

Is the Glow Worm Energy 25kW a combi boiler, system boiler or regular boiler?

The Glow Worm Energy 25kW is a combi boiler you may wish to consider if you want this particular type of boiler for your house or flat.

In many properties, combi boilers are more suitable than traditional types of boiler. Combi boilers heat water instantly on demand, which they draw directly from the mains supply, removing the need for storage tanks that can take up valuable space in your home.

A combi boiler is often the right choice for a smaller property, particularly if your home doesn't have a useable loft. As water is heated and delivered immediately rather than being kept warm for hours in an immersion tank, combi boilers reduce gas usage, thereby minimising your heating costs.

The main disadvantage of combi boilers is that they can only heat a certain amount of water at any one time. This means that, if two people are using different taps or showers within your home at the same time, the flow of heated water to each will be reduced, as will the water pressure and temperature.

Would the Glow Worm Energy 25kW combi be a suitable choice of boiler for my house or flat?

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

A boiler's output level measures how much power it can use to provide you with the hot water you need for your radiators and taps. If a boiler has a high output rate, it can heat greater volumes of water.

If you choose a boiler with too low an output, you'll find that the water coming out of your taps and in your radiators won't be as hot as you want it to be. Choosing one whose output is too high means you'll pay more than you need to for the gas your boiler needs to work.

The Glow Worm Energy 25kW combi outputs at a maximum of 25 kW, so which types of property would this Glow worm Energy 25kW Combi boiler be appropriate for?

A PlumbProud heating engineer would recommend that this Glow worm Energy 25kW Combi boiler is suitable for smaller homes and apartments with up to 10 radiators and one bathroom.

Flow rates are important when choosing a combi boiler as well as output rates.

A combi boiler's flow rate (measured in litres per minute) describes how much water it can instantly heat then distribute to the taps and radiators in your home - you will need to factor this into your decision on a new combi boiler. This Glow worm Energy 25kW Combi boiler's flow rate is 10 L/m.

If you have a lot of radiators and bathrooms in your home and there's lots of demand within your household for hot water at the same time (like morning or evening showers and baths), you'll need a boiler with a high flow rate.

However, it's not quite that simple. If your local mains water pressure is low, you're not going to gain any benefit from choosing a combi boiler with a high flow rate because that higher flow rate 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 Glow Worm Energy 25kW in millimetres

The Glow Worm Energy 25kW measures 700 mm in height by 390 mm in width by 280 mm in depth.

Is this Glow Worm boiler condensing or non-condensing?

We recommend the Glow Worm Energy 25kW as it is a modern condensing gas boiler from a trusted manufacturer with a reputation for supplying highly energy-efficient boilers.

Condensing boilers capture the heat still present in water vapour condensation and flue exhaust gases and recycle it back into the heating system. With this extra energy, your boiler can, among other tasks, reheat colder water coming back from your radiators without having to burn more gas.

Condensing boilers significantly reduce your quarterly gas costs and they're better for the environment.

Is the Glow Worm Energy 25kW combi boiler an environmentally friendly choice?

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.

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.

Would choosing a Glow Worm Energy 25kW combi help the environment? Let’s see what the performance figures suggest.

All boilers manufactured in the UK from April 2018 must achieve a SEDBUK “A” grade and an energy efficiency rating of 92% or above. Before that, the minimum was 88% - efficiency ratings of 88% and 89% were scored a “B” and 90%+ an "A".

A boiler's energy efficiency rating describes how much energy it uses and wastes during its standard operation.

The energy efficiency of the Glow Worm Energy 25kW was rated at 89.2% with a SEDBUK grading of "B".

In 2015, the Energy Related Products Directive (ERP) came into force. The legislation applies to all products that consume energy in production, during their active life, and at the point of final disposal.

The ERP was introduced to incentivise manufacturers to create products that emitted fewer harmful gases with the larger aim of protecting the wider environment.

The Glow Worm Energy 25kW has been awarded an ERP rating of "A" for heat and "A" for water.

What is the length of the warranty on the Glow Worm Energy 25kW?

The Glow Worm Energy 25kW is covered by a parts and labour warranty of 2 years following installation.


Glow worm Energy 25kW Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating89.2%
Band ratingB
LPG Compatible?Yes
P/L Warranty2 Years
Output in kW25 kW
Height700 mm
Width390 mm
Depth280 mm
MountingWall
Flow rate10 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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Glow Worm Energy 25kW boiler

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Glow worm Energy 25kW Combi Gas boiler

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Plumbproud rating for this boiler
76.97%

We score each boiler we sell by considering a number of different factors including price installed, manufacturer guarantees, energy efficiency, the likely cost of running, and more. For this Glow worm Energy 25kW Combi boiler, we have awarded a rating of 76.97%.

We anticipate the supply and installation cost for this model of boiler will be around £1,800 on a standard fit.

Get a better understanding of installation costs for the Glow Worm Energy 25kW 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 guideline
£1,800

Get your free quote

Glow worm Energy 25kW Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating89.2%
Band ratingB
LPG Compatible?Yes
P/L Warranty2 Years
Output in kW25 kW
Height700 mm
Width390 mm
Depth280 mm
MountingWall
Flow rate10 L/m
ERP HeatA
ERP WaterA

Glow worm Energy 25kW Combi Gas boiler frequently asked questions

What type of boiler is the Glow Worm Energy 25kW - regular, system or combi?

Looking for a gas combi boiler for your house or flat? If you are, the Glow Worm Energy 25kW boiler may be worth considering.

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 Glow Worm Energy 25kW combi boiler a suitable choice for my property?

Whether this Glow worm Energy 25kW Combi boiler is right for your property 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 rating indicates how much energy a boiler can use in providing you with hot water and heat when you need it from your radiators and taps. The greater the output, the more water it can heat.

It's better to take advice on this from a registered installer because, if your boiler output is too low, your water and radiators might not get as hot as you would like them to be. However, if the output level is too high, you'll end up paying more on your gas bills than you need to.

Which types of property would this Glow worm Energy 25kW Combi boiler be appropriate for given its output of 25 kW?

An experienced PlumbProud Gas Safe engineer would almost certainly recommend that this Glow worm Energy 25kW Combi boiler would be most suitable for smaller homes and apartments with up to 10 radiators and one bathroom.

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 Glow Worm Energy 25kW 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 Glow worm Energy 25kW Combi boiler's flow rate is 10 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.


How big is the Glow Worm Energy 25kW?

The Glow Worm Energy 25kW is 700 mm tall, 390 mm wide, and 280 mm deep in size.

Is the Glow Worm Energy 25kW condensing or non-condensing?

The Glow Worm Energy 25kW 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 Glow Worm Energy 25kW combi an energy-efficient boiler?

How we heat our homes has become a pressing issue of concern for many homeowners worried about climate change and the environmental impact of their personal choices.

Nitrogen dioxide emissions in Britain's largest cities are at dangerous levels and this has been caused by gas boilers. In fact, 14% of the UK’s greenhouse gases are produced by central heating.

If you decide to install a Glow Worm Energy 25kW combi in your home, will you be helping the environment with your choice? Let’s have a look at the figures.

All boilers manufactured and supplied in the UK are assigned two energy efficiency ratings. By law, they must achieve a SEDBUK "A" rating subject to a minimum efficiency level of 92%. Prior to that, the minimum was 88% (88% and 89% are equivalent to a SEDBUK "B" grade and 90% and above an "A" grade).

The ratings awarded to the Glow Worm Energy 25kW are 89.2% with a SEDBUK rating of "B".

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 Glow Worm Energy 25kW, the ERP rating is "A" for heat and "A" for hot water production.

How long is the warranty period on the Glow Worm Energy 25kW combi boiler?

The parts and labour warranty on the Glow Worm Energy 25kW covers all repair-related costs for 2 years while the heat exchange warranty covers you for [Heat Exchange Warranty] 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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