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Our PlumbProud boiler quality benchmark tests score this Viessmann Vitodens 050-W 35kW Combi boiler at 91.23%. Several factors go into determining our rating including installation costs, manufacturer guarantees, energy efficiency, running costs, and more.
This Viessmann Vitodens 050-W 35kW Combi boiler will cost approximately £1,900 supplied and fully installed through PlumbProud assuming that there are no unexpected complications during the fitting.
For a free, no-obligation quotation on this Viessmann Vitodens 050-W 35kW Combi boiler or for our professional advice on whether the Viessmann Vitodens 050-W 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.
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The Viessmann Vitodens 050-W 35kW boiler is an option you may wish to consider if you're looking for a combi boiler for your house or flat.
Traditional boilers have one or two tanks - one holds hot water to keep it warm and the other water for later heating. Because UK residential property is among some of the smallest in the world, manufacturers introduced combi boilers and the heat pumps that go in them in the 1970s to reduce the amount of space boilers needed to take up.
The hot water needed for your radiators and taps is available on demand when you have a combi boiler. Combi boilers use technology located within the boiler to heat cold water, which it draws from the mains, and to distribute hot water where it's needed around your home.
A combi boiler, however, has the disadvantage of a maximum capacity for the amount of water it can heat. The result is that if someone uses the shower while another uses a hot water tap simultaneously, the amount of water reaching each point falls, causing water pressure to drop.
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 050-W 35kW Combi boiler be appropriate for given its output of 33 kW?
An experienced boiler engineer would recommend that this Viessmann Vitodens 050-W 35kW 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.
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 Viessmann Vitodens 050-W 35kW Combi boiler's flow rate is 14 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 Viessmann Vitodens 050-W 35kW is 707 mm in height, 400 mm in width and 350 mm in depth.
The Viessmann Vitodens 050-W 35kW 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.
As more of us become concerned by the effects of climate change, the damage we do to the environment by heating our homes has emerged as an important issue for many homeowners.
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.
Will choosing to install a Viessmann Vitodens 050-W 35kW combi in your home help the environment? Let's review 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 Viessmann Vitodens 050-W 35kW are 93% with a SEDBUK rating 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 050-W 35kW, the ERP Heat rating is "A" and the ERP Water rating is "A".
The Viessmann Vitodens 050-W 35kW boiler has a warranty covering parts and labour costs for up to 3 years after installation.
Powered by Gas | Gas |
Location | External |
Condensing? | Yes |
Efficiency rating | 93% |
Band rating | A |
LPG Compatible? | Yes |
P/L Warranty | 3 Years |
Output in kW | 33 kW |
Height | 707 mm |
Width | 400 mm |
Depth | 350 mm |
Mounting | Wall |
Flow rate | 14 L/m |
ERP Heat | A |
ERP Water | A |
Using the Plumbproud scoring system, the current 10 ten Gas Combi boilers assessed using a number of important variables are as follows:
1 | Vaillant ecoTEC Plus 825 | 93.35% |
2 | Vaillant ecoTEC Plus 832 | 92.98% |
3 | Worcester Bosch Greenstar 2000 25kW | 92.89% |
4 | Viessmann Vitodens 050-W 29kW | 92.66% |
5 | Vaillant ecoTEC Plus 835 | 92.60% |
6 | Worcester Bosch Greenstar CDi Compact 28 | 92.57% |
7 | Vaillant ecoFIT Pure 825 | 92.39% |
8 | Vaillant ecoTEC Plus 838 | 92.16% |
9 | Vaillant ecoTEC Exclusive IQ 835 | 91.90% |
10 | Vaillant ecoTEC Pro 24 | 91.77% |
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We have rated this Viessmann Vitodens 050-W 35kW Combi boiler at 91.23% using the PlumbProud quality scoring system. To determine a rating, we weigh up a number of important considerations including the energy efficiency, estimated running costs, manufacturer's warranty, price of the boiler and more.
We anticipate the supply and installation cost for this model of boiler will be around £1,900 on a standard fit.
For advice on whether this Viessmann Vitodens 050-W 35kW Combi boiler is suitable for your home or to receive a free quotation on theViessmann Viessmann Vitodens 050-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.
Powered by Gas | Gas |
Location | External |
Condensing? | Yes |
Efficiency rating | 93% |
Band rating | A |
LPG Compatible? | Yes |
P/L Warranty | 3 Years |
Output in kW | 33 kW |
Height | 707 mm |
Width | 400 mm |
Depth | 350 mm |
Mounting | Wall |
Flow rate | 14 L/m |
ERP Heat | A |
ERP Water | A |
You might want to consider the Viessmann Vitodens 050-W 35kW for your house or flat if you are looking for a combi boiler.
In older British homes, traditional boilers required you to find room for one or more storage tanks. One tank would keep hot water warm and the other stored cold water for later heating. Manufacturers introduced combi boilers to the UK in the 1970s so that homeowners could get the warmth and hot water they needed without having to sacrifice too much valuable space – remember that residential property in this country is among the smallest in the Western world.
Combi boilers deliver hot water to your radiators and taps using water they draw directly from the mains supply. As mains water travels through a combi boiler, the technology within it heats the cold water instantly and on demand. The hot water is then distributed throughout your house.
Combi boilers have one drawback, however: they can only heat a certain amount of water within a given time. For example, if someone uses the shower and another person uses the hot water tap at the same time, water pressure drops because water reaches each point differently.
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 050-W 35kW combi outputs at a maximum of 33 kW, so which types of property would this Viessmann Vitodens 050-W 35kW Combi boiler be appropriate for?
Most experienced boiler engineers would recommend that this Viessmann Vitodens 050-W 35kW Combi boiler would be suitable for medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.
Homeowners considering fitting a combi boiler to their home need to consider flow rates as well as output rates.
The flow rate is a measurement of the volume of water a combi can instantly heat and send to the taps and radiators around your home. The higher the likely demand for hot water in your home, the higher your combi's flow rate should be. This Viessmann Vitodens 050-W 35kW Combi boiler's flow rate is 14 L/m.
Unlike heat only or system boilers, combi boilers don't store hot water in a tank for later use - instead, they draw it directly from the mains. This means that the volume of water your boiler can actually process is constrained by the flow rate of water in the mains pipe.
So, if you choose a combi boiler with a 15l/m flow rate but the flow rate in your mains pipe is 12l/m, the combi boiler's working flow rate is also 12l/m.
Combi boilers are also not always the correct choice for homes with multiple bathrooms, a high number of radiators, or where more than one family member will want to use hot water at the same time.
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 Viessmann Vitodens 050-W 35kW is 707 mm in height, 400 mm in width and 350 mm in depth.
The Viessmann Vitodens 050-W 35kW 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.
As the British public has become more conscious of climate change, many homeowners consider the environment when choosing how to heat their homes.
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.
Will installing a Viessmann Vitodens 050-W 35kW combi in your home be a positive contribution to the environment? The figures below will tell you more.
Boilers manufactured and installed in the UK are assigned energy efficiency ratings following testing to an agreed set of standards. These scores indicate how much energy the boiler uses and how much goes to waste when it's in operation.
By law, boilers must achieve a SEDBUK rating of "A" subject to achieving a minimum of 92% energy efficiency. Prior to April 2018, the minimum was 88% (88% and 89% on the SEDBUK are graded "B" and 90% and above is graded "A").
The Viessmann Vitodens 050-W 35kW was awarded an efficiency rating of 93% with a SEDBUK band rating of "A".
The ERP, short for the Energy Related Products Directive, is a European directive aimed at encouraging manufacturers to create products that are environmentally friendlier at all stages, including during manufacturing, when the product is in active use, right through to the point of final disposal.
The Viessmann Vitodens 050-W 35kW has a rating of "A" for heat and "A" for hot water production.
The Viessmann Vitodens 050-W 35kW boiler comes with a parts and labour warranty lasting 3 years.
Using the Plumbproud scoring system, the current 10 ten Gas Combi boilers assessed using a number of important variables are as follows:
1 | Vaillant ecoTEC Plus 825 | 93.35% |
2 | Vaillant ecoTEC Plus 832 | 92.98% |
3 | Worcester Bosch Greenstar 2000 25kW | 92.89% |
4 | Viessmann Vitodens 050-W 29kW | 92.66% |
5 | Vaillant ecoTEC Plus 835 | 92.60% |
6 | Worcester Bosch Greenstar CDi Compact 28 | 92.57% |
7 | Vaillant ecoFIT Pure 825 | 92.39% |
8 | Vaillant ecoTEC Plus 838 | 92.16% |
9 | Vaillant ecoTEC Exclusive IQ 835 | 91.90% |
10 | Vaillant ecoTEC Pro 24 | 91.77% |