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Glow Worm Energy 35kW boiler

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Plumbproud rating

73.50%

Glow worm Energy 35kW Combi Gas boiler

This Glow worm Energy 35kW Combi boiler scores 73.50% on our PlumbProud boiler quality benchmark tests. To determine our rating, we consider many factors, such as the cost of installation, manufacturer guarantees, energy efficiency, and likely running costs.

We would anticipate that this Glow worm Energy 35kW Combi boiler would cost you £2,700 fully installed through PlumbProud provided that the fitting is standard and with no complications.

For a free quote on the Glow Worm Energy 35kW boiler and to get professional advice and guidance on whether it is the right choice for your home, please enter your postcode in the quote boxes on this page, click here to email us, or call us on 01604 343053.


Installed price around

£2,700

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Glow worm Energy 35kW Combi Gas boiler frequently asked questions

Glow Worm Energy 35kW - a regular, combi or system boiler?

If you want a combi boiler for your flat or house, the Glow Worm Energy 35kW might be an option for you to consider.

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.

Should I install a Glow Worm Energy 35kW 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 - the "output".

The output of a boiler is measured in kilowatts. The output level determines the maximum power a boiler can use in heating the water needed for the baths, showers, taps and radiators in your home.

It's important to choose a boiler with an appropriate level of output for your property. Your boiler should be able to cope with periods of peak demand in your property and not just your average usage.

An output rate that is too low will result in an inadequate supply of hot water, while an output that is too high will mean the boiler will cost more to run than is necessary.

The output of the Glow Worm Energy 35kW combi is 35 kW kilowatts, so which types of property would this be appropriate for?

A PlumbProud Gas Safe boiler installer would recommend that the most suitable type of property for this Glow worm Energy 35kW Combi boiler would be larger properties including detached homes containing 15 or more radiators and two or more bathrooms.

If you are considering installing a combi boiler in your home, you need to consider the flow rate as well as the output rate.

The flow rate is the volume of water (measured in litres per minute) that your boiler can instantly heat up and send around the home. The more demand in your home for water at the same time (for example, two people taking showers in different bathrooms), the higher the flow rate you'll need.

However, the actual flow rate your boiler can deliver is also determined by your mains water pressure. If you choose a boiler with a flow rate of 16l/m but the mains water pressure is 12l/m, your boiler will only perform to 12l/m. This Glow worm Energy 35kW Combi boiler's flow rate is 19 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.


Where will the Glow Worm Energy 35kW fit in my house?

The Glow Worm Energy 35kW measures 890 mm high and 470 mm wide by a depth of 561 mm.

Is the Glow Worm Energy 35kW condensing or non-condensing?

The Glow Worm Energy 35kW is a condensing gas boiler - we strongly recommend that you choose one of the latest condensing models if possible.

With a condensing boiler, you save money on your gas bills because your boiler captures and recycles the heat present in the flue exhaust gases and water vapour condensation for re-use, meaning they operate far more economically and efficiently.

Is the Glow Worm Energy 35kW combi a good choice for the environment?

The effects of climate change on the environment are leading many homeowners to question the damage they might be doing by the way they heat their homes.

Dangerous levels of nitrogen dioxide emissions in larger UK cities are caused by gas boilers in domestic properties, and 14% of the UK’s greenhouse gas production is as a result of central heating.

Would installing the Glow Worm Energy 35kW combi in your home be an environmentally friendly decision? Let's look closely at the figures.

The energy efficiency rating of the Glow Worm Energy 35kW is 89.4% with a SEDBUK band rating of "B".

Energy efficiency tests record how much energy is wasted on non-core functions during an operation.

By law, all boilers manufactured and supplied in the UK must have a minimum energy efficiency performance level of 92% (equivalent to a SEDBUK "A" grade). Up to April 2018, the minimum performance level was 88% (88% and 89% are equivalent to a SEDBUK "B" grade and 90%+ an "A" grade).

The Energy Related Products Directive, also known as ERP, is European legislation that intends to reduce energy consumption related to products right from the initial manufacturing process through to eventual final disposal.

The purpose of the directive is to encourage manufacturers to create new products that are kinder to the environment and which result in lower overall harmful gas emissions through a product's entire life cycle.

The Glow Worm Energy 35kW has a rating of "A" for heat and "A" for water.

Does the Glow Worm Energy 35kW combi boiler come with a warranty?

The Glow Worm Energy 35kW is covered by a parts and labour warranty of 5 years following installation.


Glow worm Energy 35kW Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating89.4%
Band ratingB
LPG Compatible?Yes
P/L Warranty5 Years
Output in kW35 kW
Height890 mm
Width470 mm
Depth561 mm
MountingWall
Flow rate19 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 35kW boiler

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Glow worm Energy 35kW Combi Gas boiler

  1. Home
  2. Glow worm Energy 35kW
Plumbproud rating for this boiler
73.50%

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 73.50% on the PlumbProud boiler benchmarking system.

We would expect this Glow worm Energy 35kW Combi boiler to cost £2,700 fully installed through PlumbProud, although it will cost more if the fit is complicated. We will provide you with a full quote before starting work, however.

For a free, no-obligation quotation on this Glow worm Energy 35kW Combi boiler or for our professional advice on whether the Glow Worm Energy 35kW is suitable for your property, please call 01604 343053, click here to email our team or enter your postcode into the quotation box on this page.


Installed price guideline
£2,700

Get your free quote

Glow worm Energy 35kW Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating89.4%
Band ratingB
LPG Compatible?Yes
P/L Warranty5 Years
Output in kW35 kW
Height890 mm
Width470 mm
Depth561 mm
MountingWall
Flow rate19 L/m
ERP HeatA
ERP WaterA

Glow worm Energy 35kW Combi Gas boiler frequently asked questions

Is the Glow Worm Energy 35kW a combi, system or regular boiler?

If you want a combi boiler for your flat or house, the Glow Worm Energy 35kW might be an option for you to consider.

Combi boilers have much to recommend them - not least the fact that they save a lot of space. Combination (or combi) boilers were introduced by manufacturers in the 1970s to provide practical central heating and hot water distribution to smaller properties - remember that UK houses and flats tend to be among the smallest in the developed world.

Traditional boilers require one or more storage tanks to keep hot water warm and to store water for heating later. In contrast, combi boilers draw water directly from the mains supply and heat it instantly, removing the need for a storage tank. The heated water is then distributed to your taps and radiators on demand.

While combi boilers are suitable choices for many properties, especially those without a loft, there is also a disadvantage in using them. Water is heated instantly and the volume of water that can be heated at any one time is limited. This can result in less water being sent to taps and showers if more than one is being used simultaneously. In these instances, the water pressure to both points will drop.

Should I install a Glow Worm Energy 35kW combi boiler in my house or apartment?

It's best to choose a boiler whose size or "output" is right for your property. With boilers, however, size does not mean how big a boiler is, it means how much power it has.

A boiler’s output indicates the amount of power it can use when heating the water which it then sends to your taps and radiators. The higher the output rate, the more water it can heat.

If a boiler’s output is too low, there will be times when your hot water might not be as hot as you want it to be. If it is too high, you’ll likely be paying more than you need to for your gas.

Measured in kilowatts, the Glow Worm Energy 35kW combi's output level is 35 kW, so which types of property would this Glow worm Energy 35kW Combi boiler be an appropriate choice for?

A PlumbProud Gas Safe boiler installer would recommend that this Glow worm Energy 35kW Combi boiler is appropriate for larger properties including detached homes with 15 or more radiators and two or more 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 Glow worm Energy 35kW Combi boiler's flow rate is 19 L/m.

However, combi boilers like the Glow Worm Energy 35kW 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.


The size of the Glow Worm Energy 35kW

The Glow Worm Energy 35kW is 890 mm high by 470 mm wide by 561 mm deep.

Is the Glow Worm Energy 35kW 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 Glow Worm Energy 35kW 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 Glow Worm Energy 35kW combi environmentally friendly?

Concern for the environment is causing more and more homeowners to think about how they heat their homes and its impact on climate change.

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 installing a Glow Worm Energy 35kW combi boiler in your home help combat climate change? What do the figures suggest?

Boilers manufactured in the UK must be tested and, by law, achieve an energy efficiency rating of 92% or above, equivalent to a SEDBUK "A" grade. Most boilers achieve an "A" rating meaning they are at least 88% efficient.

The energy efficiency of a boiler indicates the amount of energy it uses (and wastes) during operation.

The Glow Worm Energy 35kW has been assigned an efficiency rating of 89.4% with a SEDBUK rating of "B".

The ERP (Energy Related Products Directive) applies to all products that consume energy at any time in their lifetime, from manufacture to disposal and all points in between.

This European legislation intends to encourage manufacturers to offer end users products that are better for the environment through the creation of fewer harmful gas emissions at all points of a product's life cycle.

The ERP rating for the Glow Worm Energy 35kW is "A" for heat and "A" for water.

Does a Glow Worm Energy 35kW combi boiler come with a warranty period?

A parts and labour warranty of 5 years is included with the Glow Worm Glow Worm Energy 35kW boiler.


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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