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Viessmann Vitodens 100 W 35kW boiler

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Plumbproud rating

89.70%

Viessmann Vitodens 100-W 35kW 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 35kW heat only boiler receives a score of 89.70% on our PlumbProud quality scoring system.

We would anticipate that this Viessmann Vitodens 100-W 35kW heat only boiler would cost you £2,500 fully installed through PlumbProud provided that the fitting is standard and with no complications.

For advice on whether this Viessmann Vitodens 100-W 35kW heat only boiler is suitable for your home or to receive a free quotation on theViessmann Viessmann Vitodens 100-W 35kW, please call 01604 343053 to speak to one of our team. Alternatively, click here to email us or enter your postcode into the quotation box on this page.


Installed price around

£2,500

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Viessmann Vitodens 100-W 35kW heat only Gas boiler frequently asked questions

Is the Viessmann Vitodens 100-W 35kW a system, regular or combi boiler?

The Viessmann Vitodens 100-W 35kW boiler is a heat only boiler you may wish to consider when looking for a new boiler for your house or flat.

Heat only boilers are also referred to as regular boilers, conventional boilers or standard boilers. Heat only boilers require both a hot water/immersion cylinder (usually stored in a landing cupboard or airing cupboard) and a cold water tank (usually stored in a loft) to work. Water passes from the cold tank to the immersion cylinder and the immersion cylinder heats and keeps water warm.

You program your immersion cylinder via the control panel to make sure that you have the hot water and central heating you need. However, if you forget to set your system and there's no water left in the immersion cylinder, it can take up to an hour before you'll have hot water again.

If your home has more than one bathroom or you have a large family and there's a high demand for hot water, a heat only boiler is often a more suitable option than a combi boiler. Although combis offer space-saving advantages, there is a maximum volume of water they can heat at any given time. This means that, if two or more people in your household want hot water at the same time, there will likely be a drop in temperature, volume and pressure to both points.

Is the Viessmann Vitodens 100-W 35kW heat only boiler suitable for my house or apartment?

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 Viessmann Vitodens 100-W 35kW heat only outputs at a maximum of 35 kW, so which types of property would this Viessmann Vitodens 100-W 35kW heat only boiler be appropriate for?

Most experienced Gas Safe boiler installers would recommend this Viessmann Vitodens 100-W 35kW heat only boiler as a suitable option for larger properties including detached homes with no more than 15 or more radiators and two or more bathrooms.


What are the dimensions of the Viessmann Vitodens 100-W 35kW boiler?

The Viessmann Vitodens 100-W 35kW measures 600 mm tall, 375 mm wide, and 340 mm deep.

Is the Viessmann Vitodens 100-W 35kW a condensing or non-condensing boiler?

The Viessmann Vitodens 100-W 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 Viessmann Vitodens 100-W 35kW heat only boiler an environmentally friendly choice?

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.

With central heating being responsible for 14% of greenhouse gas emissions in the UK, your choice of boiler matters. Gas boilers are also responsible for the significant atmospheric volumes of dangerous nitrogen dioxide emissions in larger British cities.

Would choosing the Viessmann Vitodens 100-W 35kW heat only be an environmentally-friendly choice? If so, let's look at its performance figures.

The energy efficiency rating for a boiler describes the amount of energy it uses and wastes during operation and there are two different ways to measure it.

All boilers manufactured and supplied in the UK must have a SEDBUK rating of “A” subject to a minimum energy efficiency score of 92% or above. Before April 2018, the minimum energy efficiency score was 88% (88/89% = "B" SEDBUK rating, 90%+ = "A" SEDBUK rating).

The Viessmann Vitodens 100-W 35kW scored an efficiency rating of 94% and a SEDBUK band rating of A.

In 2015, new legislation was introduced by the EU to encourage manufacturers to develop more energy-efficient products that emit fewer harmful gases throughout their lifetime.

The Energy Related Products Directive (ERP) applies to all products that consume energy, including during the manufacturing process, at the point of final disposal, and all points in between.

The ERP rating of the Viessmann Vitodens 100-W 35kW is "A".

What is the warranty period on a Viessmann Vitodens 100-W 35kW heat only boiler?

Parts and labour charges incurred for repairs made to your new Viessmann Vitodens 100-W 35kW are covered by a 5 year warranty.


Viessmann Vitodens 100-W 35kW Gas heat only boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty5 Years
Output in kW35 kW
Height600 mm
Width375 mm
Depth340 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 35kW boiler

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Viessmann Vitodens 100-W 35kW heat only Gas boiler

  1. Home
  2. Viessmann Vitodens 100-W 35kW
Plumbproud rating for this boiler
89.70%

According to our PlumbProud boiler quality scoring system, we rate this model 89.70%. We rank boilers using a number of different factors including price installed, manufacturer guarantees, energy efficiency, likely running costs, and more.

This Viessmann Vitodens 100-W 35kW heat only boiler is likely to cost around £2,500 fully installed by PlumbProud if there are no unexpected complications during the fit.

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 Viessmann Vitodens 100-W 35kW boiler is the right choice for your home.


Installed price guideline
£2,500

Get your free quote

Viessmann Vitodens 100-W 35kW Gas heat only boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty5 Years
Output in kW35 kW
Height600 mm
Width375 mm
Depth340 mm
MountingWall
ERP HeatA

Viessmann Vitodens 100-W 35kW heat only Gas boiler frequently asked questions

Is the Viessmann Vitodens 100-W 35kW a system, regular or combi boiler?

The Viessmann Vitodens 100-W 35kW boiler is a heat only boiler you may wish to consider when looking for a new boiler for your house or flat.

A heat only boiler, sometimes called a conventional boiler, a standard boiler or a regular boiler, requires both a hot water cylinder and a cold water tank to operate. Most homeowners keep their hot water cylinder in a landing cupboard or airing cupboard and their cold water tank in the attic. Your hot water is kept warm in the immersion cylinder.

With a heat only boiler, you program your hot water and temperature for set times during the day or week. If you forget to set your boiler or the immersion cylinder runs out of hot water, you may have to wait up to an hour for your supply of hot water to be restored.

A heat only boiler is likely to be the best choice for a home with several bathrooms or a bigger family - the type of household where hot water is in continual demand and more than one person might need it at once. With the more popular combi boiler, there is a maximum amount of water that can be heated and distributed, while pressure, volume and temperature drop if two or more people need hot water at once.

Is a Viessmann Vitodens 100-W 35kW heat only boiler suitable for my house or flat?

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

Output measures in kilowatts how much power a boiler can use when heating water for your radiators or taps. The higher the output rate, the more water it can heat.

If the output rate is too low, your hot water might often be only lukewarm, and if it is too high, you will be paying more for your gas than you need to.

The Viessmann Vitodens 100-W 35kW heat only boiler has an output of 35 kW, so which types of property would it be most appropriate for?

To most experienced Gas Safe boiler installers, the Viessmann Vitodens 100-W 35kW heat only Vitodens 100-W would be most suitable for larger properties including detached homes with 15 or more radiators and two or more bathrooms.


Viessmann Vitodens 100-W 35kW dimensions

The Viessmann Vitodens 100-W 35kW boiler is 600 mm high, 375 mm wide, and 340 mm deep.

Viessmann Vitodens 100-W 35kW – condensing or non-condensing?

This Viessmann Vitodens 100-W 35kW is a condensing gas boiler - we always recommend that clients choose the latest condensing models to benefit from the technology, which continues to improve year after year.

Condensing boilers capture the heat still present in flue exhaust gases and water vapour condensation, processing them through a secondary heat exchanger to, among other tasks, heat colder water returning from your radiators.

By selecting a modern condensing boiler, you'll save money on your gas bills as well as benefitting the wider environment.

How energy efficient is the Viessmann Vitodens 100-W 35kW heat only boiler?

How we heat our homes and the effect that has on climate change has become important to many homeowners worried about the environment.

About 14% of the greenhouse gases we produce in the UK come from the power needed for central heating. In bigger British cities, gas boilers are a significant source of nitrogen dioxide emissions.

Would installing a Viessmann Vitodens 100-W 35kW heat only boiler in your home be a green choice? Let's look at the numbers.

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 Viessmann Vitodens 100-W 35kW was awarded an efficiency rating of 94% with a SEDBUK grading of "A".

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 emit fewer harmful gases with the larger aim of protecting the wider environment.

The Viessmann Vitodens 100-W 35kW has been awarded an ERP rating of "A".

How long is the warranty period on the Viessmann Vitodens 100-W 35kW heat only boiler?

The Viessmann Vitodens 100-W 35kW 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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