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Viessmann Vitodens 100 W 26kW boiler

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Plumbproud rating

92.44%

Viessmann Vitodens 100-W 26kW heat only Gas boiler

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 Viessmann Vitodens 100-W 26kW heat only boiler receives a score of 92.44% on our PlumbProud quality scoring system.

We estimate that, on a standard, non-complicated installation, the supply and fitting charge for this Viessmann Vitodens 100-W 26kW heat only boiler will be around £2,000.

Get a better understanding of installation costs for the Viessmann Vitodens 100-W 26kW 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 around

£2,000

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Viessmann Vitodens 100-W 26kW heat only Gas boiler frequently asked questions

Viessmann Vitodens 100-W 26kW - a regular boiler, combi boiler or system boiler?

When looking for a heat only boiler for your house or flat, the Viessmann Vitodens 100-W 26kW might be a suitable option for you.

Heat only boilers (sometimes called conventional boilers, standard boilers or regular boilers) require both a hot water/immersion cylinder (normally in a landing cupboard or utility room) and a cold water tank (normally in the attic). The immersion cylinder keeps hot water warm and the cold water tank holds water which it transfers to the immersion cylinder when required.

You set the times that you need heat and hot water with a standard boiler. Once the water in the cylinder is heated, it can be used throughout the day. However, it takes a while for the water to heat up and so, if you haven't set your system, you will have to wait a while for heat and hot water to come back (normally no more than an hour).

Combi boilers deliver hot water instantly but there is a limit to the amount of water they can heat and distribute at any one time. Heat only boilers are usually better choices if you have a large family or more than one bathroom where more than one person in your household requires hot water at the same time.

Is the Viessmann Vitodens 100-W 26kW heat only boiler from the Vitodens 100-W range a suitable choice for my house or flat?

It's best to choose a boiler whose size or "output" is right for your home.

The more hot water and heat you want, the higher the output level of your boiler should be. Output is measured in kilowatts and it describes the maximum level of power your boiler has to heat water.

If your output level is too low, your boiler will not have the power it needs to get your water as hot as you want it, particularly when there's a lot of demand for it. Choose a boiler whose output level is too high and you'll have all the hot water you need but will be paying too much for it through higher gas bills.

Which types of property would this Viessmann Vitodens 100-W 26kW heat only boiler be appropriate for given its output of 26 kW?

A heating engineer would recommend that this Viessmann Vitodens 100-W 26kW heat only boiler would provide adequate heating and hot water for larger properties including detached homes with up to 15 or more radiators and two or more bathrooms.


Dimensions of the Viessmann Vitodens 100-W 26kW boiler

The Viessmann Vitodens 100-W 26kW is 600 mm [H] by 375 mm [W] by 285 mm [D] in size.

Is the Viessmann Vitodens 100-W 26kW non-condensing or 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 Viessmann Vitodens 100-W 26kW 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 Viessmann Vitodens 100-W 26kW heat only 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.

In the UK, central heating systems account for 14% of greenhouse gas production. Gas boilers in particular are responsible for emissions of dangerous nitrogen dioxide in British cities.

If you decide to install a Viessmann Vitodens 100-W 26kW heat only in your home, will you be helping the environment with your choice? Let’s have a look at the figures.

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 Viessmann Vitodens 100-W 26kW was given an efficiency rating of 94% 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 (ERP) Directive is important European legislation that aims to limit energy use and harmful gas emissions during the manufacturing process, when the product is in use, and after it is disposed of.

For the Viessmann Vitodens 100-W 26kW, the ERP Heat rating is "A".

What is the warranty period for the Viessmann Vitodens 100-W 26kW?

You receive a parts and labour warranty of 5 years with the Viessmann Vitodens 100-W 26kW boiler.


Viessmann Vitodens 100-W 26kW Gas heat only boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty5 Years
Output in kW26 kW
Height600 mm
Width375 mm
Depth285 mm
MountingWall
ERP HeatA

The top 10 rated Gas heat only boilers

Using the Plumbproud scoring system, the current 10 ten Gas heat only boilers assessed using a number of important variables are as follows:

1Vaillant ecoTEC Plus 41596.51%
2Vaillant ecoTEC Plus 41895.45%
3Vaillant ecoFIT Pure 41294.82%
4Vaillant ecoTEC Plus 42494.77%
5Vaillant ecoFIT Pure 41594.23%
6Vaillant ecoTEC Plus 43094.23%
7Worcester Bosch Greenstar Ri 12Ri94.18%
8Worcester Bosch Greenstar Ri 15Ri93.93%
9Worcester Bosch Greenstar Ri 18Ri93.26%
10Vaillant ecoFIT Pure 41893.11%

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Viessmann Vitodens 100 W 26kW boiler

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Viessmann Vitodens 100-W 26kW heat only Gas boiler

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  2. Viessmann Vitodens 100-W 26kW
Plumbproud rating for this boiler
92.44%

On the PlumbProud boiler quality benchmark scoring system, we have rated this Viessmann Vitodens 100-W 26kW heat only boiler at 92.44%. Ratings are determined by considering a number of important factors including the energy efficiency, price installed, warranty length, and running costs of the boiler.

Provided the proposed installation is straightforward, we would anticipate that this Viessmann Vitodens 100-W 26kW heat only boiler will cost £2,000 fully installed through PlumbProud.

Get a better understanding of installation costs for the Viessmann Vitodens 100-W 26kW 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
£2,000

Get your free quote

Viessmann Vitodens 100-W 26kW Gas heat only boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty5 Years
Output in kW26 kW
Height600 mm
Width375 mm
Depth285 mm
MountingWall
ERP HeatA

Viessmann Vitodens 100-W 26kW heat only Gas boiler frequently asked questions

Is the Viessmann Vitodens 100-W 26kW a standard, combi or system boiler?

The Viessmann Vitodens 100-W 26kW is a heat only boiler you may wish to consider if you want this type of boiler for your house or flat.

Heat only boilers (often called regular boilers, conventional boilers or standard boilers) keep hot water warm in an immersion cylinder (generally installed in a utility room or landing cupboard) and also include a cold storage tank that holds water for heating later.

As with all boilers, you set the times and days you want your hot water and central heating to be on. However, if you forget to program the boiler and there's no water left in the immersion cylinder, you may have to wait up to an hour for hot water to return.

A heat only boiler is best for homes with more than one bathroom or a larger family - immersion cylinders store a lot of water and they can deliver water at the same temperature, volume and pressure to multiple points in your home at the same time. This is in contrast to the more popular combi boilers that draw water from the mains and heat it on demand - these types of boiler have volume capacity issues.

Is the Viessmann Vitodens 100-W 26kW heat only suitable for my house or flat?

Whether this Viessmann Vitodens 100-W 26kW heat only 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.

The output level of a boiler tells you how much power it has to heat the water coming from your taps and warming up your radiators. The higher the output level, the greater the volume of water it can heat up.

If the output (measured in kilowatts) is too high, you'll pay higher gas bills and your water will be piping hot. Too low and the water coming out of your taps and being fed into your radiators will often be lukewarm.

The Viessmann Vitodens 100-W 26kW heat only outputs at a maximum of 26 kW, so which types of property would this Viessmann Vitodens 100-W 26kW heat only boiler be appropriate for?

Most heating engineers would recommend that this Viessmann Vitodens 100-W 26kW heat only boiler would be suitable for larger properties including detached homes with 15 or more radiators and two or more bathrooms.


Making space for the Viessmann Vitodens 100-W 26kW

The dimensions of the Viessmann Vitodens 100-W 26kW are 600 mm [H] x 375 mm [W] x 285 mm [D].

Is the Viessmann Vitodens 100-W 26kW condensing or non-condensing?

The Viessmann Vitodens 100-W 26kW is a condensing gas boiler - this is the type of boiler we recommend to most clients because they're better for the environment and they will save money on annual fuel bills.

A condensing boiler captures and recycles the warmth still present in both the flue exhaust gases and water vapour condensation created when gas is burned to provide your boiler with power.

This means it needs less gas to operate and it uses this extra energy to perform a number of tasks, including heating the colder water that comes back to the boiler from the radiators in your home.

How does the Viessmann Vitodens 100-W 26kW heat only boiler rate environmentally?

Environmentally-friendly heating has become an important issue for homeowners concerned about the accelerating pace of climate change.

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.

Do the available figures suggest that installing the Viessmann Vitodens 100-W 26kW heat only in your property would be an environmentally friendly choice?

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 Viessmann Vitodens 100-W 26kW was given a 94% energy efficiency rating and a SEDBUK grading of "A".

The Energy Related Products (ERP) Directive is important European legislation that aims to limit energy use and harmful gas emissions during the manufacturing process, when the product is in use, and after it is disposed of.

For the Viessmann Vitodens 100-W 26kW, the ERP Heat rating is "A".

How long is the warranty offered by the manufacturer for the Viessmann Vitodens 100-W 26kW boiler?

The Viessmann Vitodens 100-W 26kW is covered by a parts and labour warranty of 5 years following installation.


The top 10 rated Gas heat only boilers

Using the Plumbproud scoring system, the current 10 ten Gas heat only boilers assessed using a number of important variables are as follows:

1Vaillant ecoTEC Plus 41596.51%
2Vaillant ecoTEC Plus 41895.45%
3Vaillant ecoFIT Pure 41294.82%
4Vaillant ecoTEC Plus 42494.77%
5Vaillant ecoFIT Pure 41594.23%
6Vaillant ecoTEC Plus 43094.23%
7Worcester Bosch Greenstar Ri 12Ri94.18%
8Worcester Bosch Greenstar Ri 15Ri93.93%
9Worcester Bosch Greenstar Ri 18Ri93.26%
10Vaillant ecoFIT Pure 41893.11%
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