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Vaillant EcoTEC Plus 838 boiler

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Plumbproud rating

92.16%

Vaillant ecoTEC Plus 838 Combi Gas boiler

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 92.16% on the PlumbProud boiler benchmarking system.

£2,500 is the amount you should budget to have this particular boiler installed on a straightforward installation.

We offer free quotes and professional advice and guidance on whether the Vaillant EcoTEC Plus 838 is a suitable choice for your home via a phone call on 01604 343053. Alternatively, please click here to email us or enter your postcode in the quote boxes on this page.


Installed price around

£2,500

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Vaillant ecoTEC Plus 838 Combi Gas boiler frequently asked questions

Is the Vaillant EcoTEC Plus 838 boiler a combi, system or regular boiler?

The Vaillant EcoTEC Plus 838 is worthy of consideration if you're looking for a combi boiler for your flat or house.

In the past, most boilers needed one or more storage tanks to operate - one to store warm water and the other for storing water to be heated later. But storage tanks are problematic in properties where space is at a premium and particularly where there is no loft. Many properties in the UK are small and so manufacturers introduced combi boilers in the 1970s to eliminate the need for tanks.

With a combi boiler, the hot water for your radiators and taps is delivered on demand. The boiler instantly heats water it draws directly from the mains internally. It then distributes the heated water around your home at mains pressure as you need it.

It is important to bear in mind that, while combi boilers have many benefits, they can only heat a certain volume of water at any given time. This means that, if you run a shower at the same time as someone else is doing the washing up in the kitchen, the volume of water passing to each point will drop, causing a fall in pressure.

Is a Vaillant EcoTEC Plus 838 combi boiler suitable for my apartment or house?

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 Vaillant EcoTEC Plus 838 combi boiler has an output of 38.7 kW, so which types of property would it be most appropriate for?

An experienced Gas Safe boiler installer would be likely to recommend that this Vaillant ecoTEC Plus 838 Combi boiler is capable of providing heating and hot water to 15 or more radiators and two or more bathrooms and would therefore be most suitable for larger properties including detached homes.

If you are thinking about installing a combi boiler like the Vaillant EcoTEC Plus 838 in your home, you should consider flow rates as well as output rates. This Vaillant ecoTEC Plus 838 Combi boiler's flow rate is 16 L/m.

The flow rate indicates the maximum volume of water (measured in litres per minute) that your boiler can heat up and send to your radiators, taps and showers at any one time. The more taps and showers that could be in use simultaneously or the greater the number of radiators you have, the higher the flow rate you need.

However, you should establish what the mains pressure is at your property as a combi boiler can only heat the water that comes into your home.

For example, 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 capacity. Typically, a power shower will require 10 litres of water per minute.

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 Vaillant EcoTEC Plus 838 fit in my house?

The Vaillant EcoTEC Plus 838 measures 720 mm tall, 440 mm wide, and 406 mm deep.

Is the Vaillant EcoTEC Plus 838 a condensing or non-condensing boiler?

The Vaillant EcoTEC Plus 838 boiler is a condensing gas boiler and we recommend that you select one of the latest models if possible.

Condensing boilers reduce homeowners' gas bills and are better for the environment. They do this by capturing and recycling the heat still present in the flue exhaust gases and water vapour condensation produced when boilers burn gas to generate the power they need to operate.

Is the Vaillant EcoTEC Plus 838 combi rated as environmentally friendly?

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.

14% of the total amount of greenhouse gases produced by the UK comes from the central heating systems we use. In some of Britain's biggest cities, gas boilers create dangerous levels of nitrogen dioxide in the atmosphere.

Would choosing a Vaillant EcoTEC Plus 838 combi help in the fight against climate change? What do the performance statistics suggest?

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 Vaillant EcoTEC Plus 838 scored an efficiency rating of 94% and a SEDBUK band rating of A.

The Energy Related Products (ERP) Directive is a European directive which applies to all products that consume energy over their lifetime.

It encourages companies to create products that are environmentally friendlier at all life cycle stages, including initial manufacturing and end use through to final disposal, with the aim of reducing harmful gas emissions.

The Vaillant EcoTEC Plus 838 is rated "A" for heat and "A" for water.

What warranty do I get if I purchase the Vaillant EcoTEC Plus 838 boiler?

The Vaillant EcoTEC Plus 838 boiler comes with a 5 year warranty for parts and labour.


Vaillant ecoTEC Plus 838 Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?No
P/L Warranty5 Years
Output in kW38.7 kW
Height720 mm
Width440 mm
Depth406 mm
MountingWall
Flow rate16 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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Vaillant ecoTEC Plus 838 Combi Gas boiler

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  2. Vaillant ecoTEC Plus 838
Plumbproud rating for this boiler
92.16%

On the PlumbProud quality scoring system, we rate this Vaillant ecoTEC Plus 838 Combi boiler 92.16%. To determine our rating, we take lots of different factors into consideration from price installed to manufacturer guarantees, energy efficiency, likely cost of running, and more.

We estimate that this Vaillant ecoTEC Plus 838 Combi boiler will cost £2,500 fully installed through PlumbProud provided that the fit is straightforward.

For advice on whether this Vaillant ecoTEC Plus 838 Combi boiler is suitable for your home or to receive a free quotation on theVaillant Vaillant EcoTEC Plus 838, 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 guideline
£2,500

Get your free quote

Vaillant ecoTEC Plus 838 Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?No
P/L Warranty5 Years
Output in kW38.7 kW
Height720 mm
Width440 mm
Depth406 mm
MountingWall
Flow rate16 L/m
ERP HeatA
ERP WaterA

Vaillant ecoTEC Plus 838 Combi Gas boiler frequently asked questions

Is the Vaillant EcoTEC Plus 838 a regular, combi or system boiler?

When looking for a combi boiler for your house or flat, the Vaillant EcoTEC Plus 838 might be a suitable option for you.

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.

Is the Vaillant EcoTEC Plus 838 combi boiler suitable for my house or apartment?

To determine that, we need to consider the size of the boiler. However, size doesn't refer to how big a boiler is - it means the size of its "output".

Your boiler’s output is a measurement of the power it has available to heat the volume of water required for your taps and radiators. The higher the output rate, the more water it can heat.

You need to be careful to select a boiler with the optimal level of output for your property though. That's because, if your boiler output is too low, your water and radiators will often not be as hot as you want them to be. If the output is too high, you’ll be paying more for gas than you need to.

The output of the Vaillant EcoTEC Plus 838 combi is 38.7 kW, so which types of property would this Vaillant ecoTEC Plus 838 Combi boiler be appropriate for?

Most Gas Safe boiler installers would recommend that a boiler with this output level would be most suitable for larger properties including detached homes with 15 or more radiators and two or more bathrooms.

With all combi boilers, the "flow rate" (measured in litres per minute) is as important a consideration as output rate when choosing which model to go for. This Vaillant ecoTEC Plus 838 Combi boiler's flow rate is 16 L/m.

Like all combi boilers, the Vaillant EcoTEC Plus 838 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.

However, the water in the mains pipe that feeds your boilers has its own flow rate - normally between 10 and 12l/m. So if you choose a combi with a flow rate of 14l/m but local water pressure is equivalent to 11l/m, your boiler will actually operate at 11l/m - below its capacity.

In addition, if different family members want hot water at the same time (like for regular morning and evening showers) and your boiler has to provide hot water to your radiators at the same time, a combi boiler may not be suitable.

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.


Vaillant EcoTEC Plus 838 dimensions

The Vaillant EcoTEC Plus 838 occupies a space of 720 mm high by 440 mm wide and 406 mm deep.

Is the Vaillant EcoTEC Plus 838 a condensing or non-condensing boiler?

The Vaillant EcoTEC Plus 838 boiler is a condensing gas boiler and we recommend that you select one of the latest models if possible.

Condensing boilers reduce homeowners' gas bills and are better for the environment. They do this by capturing and recycling the heat still present in the flue exhaust gases and water vapour condensation produced when boilers burn gas to generate the power they need to operate.

How environmentally friendly is the Vaillant EcoTEC Plus 838 combi?

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 largest cities of Britain, gas boilers are responsible for dangerous levels of atmospheric nitrogen dioxide emissions. In total, 14% of the UK’s greenhouse gases are produced by central heating systems.

Do the figures suggest that installing the Vaillant EcoTEC Plus 838 combi at your property would help in the fight against climate change?

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 Vaillant EcoTEC Plus 838 are 94% with a SEDBUK rating of "A".

The Energy Related Products Directive grades products according to the energy they consume and the harmful gas emissions they create, from manufacturing right through to final disposal, including how they're used by customers between these two points.

The Vaillant EcoTEC Plus 838 is rated "A" for heat and "A" for water.

How long is the warranty period on a Vaillant EcoTEC Plus 838 combi boiler?

The parts and labour warranty offered with this Vaillant ecoTEC Plus 838 Combi boiler covers you for 5 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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