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Vaillant EcoFIT Pure 835 boiler

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Plumbproud rating

90.17%

Vaillant ecoFIT Pure 835 Combi Gas boiler

We have determined a rating of 90.17% for this Vaillant ecoFIT Pure 835 Combi boiler on the PlumbProud quality scoring system. The rating is determined using a variety of important factors including price installed, manufacturer guarantees, energy efficiency and the likely cost of running.

On most non-complicated installations, we would expect this Vaillant ecoFIT Pure 835 Combi boiler to cost £2,200 supplied and fully professionally installed.

We recommend that you speak to our friendly advisors by calling 01604 343053 to seek professional advice on whether the Vaillant EcoFIT Pure 835 boiler is right for your home. Our team can also provide you with a free quotation for this Vaillant ecoFIT Pure 835 Combi boiler. Alternatively, click here to email us or enter your postcode into the quotation box on this page.


Installed price around

£2,200

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Vaillant ecoFIT Pure 835 Combi Gas boiler frequently asked questions

Which category of boiler does the Vaillant EcoFIT Pure 835 fit into?

The Vaillant EcoFIT Pure 835 boiler is a combi boiler you may wish to consider when looking for a new boiler for your house or flat.

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.

Is the Vaillant EcoFIT Pure 835 combi suitable for my house or flat?

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 Vaillant EcoFIT Pure 835 combi's output level is 35 kW, so which types of property would this Vaillant ecoFIT Pure 835 Combi boiler be an appropriate choice for?

An experienced PlumbProud Gas Safe boiler installer would almost certainly recommend that this Vaillant ecoFIT Pure 835 Combi boiler would be most suitable for larger properties including detached homes with 15 or more radiators and two or more bathrooms.

Please remember to consider "flow rates" as well when choosing your new boiler. All combi boilers including the Vaillant EcoFIT Pure 835 draw water from the mains.

Each combi boiler has its own flow rate (measured in litres per minute) - this tells you how much water it can heat and distribute to your home’s taps and radiators straight from the mains. This Vaillant ecoFIT Pure 835 Combi boiler's flow rate is 14 L/m.

There is no benefit to you in choosing a combi with a high flow rate if your mains pressure is low - save money by buying a boiler whose flow rate is equal to or slightly more than the pressure in your water pipes.

In addition, if you have a lot of radiators and bathrooms in your home or you have a large household that often uses lots of hot water at the same time, like for regular morning and evening showers, 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.


The size of the Vaillant EcoFIT Pure 835

The Vaillant EcoFIT Pure 835 is 700 mm tall, 390 mm wide, and 295 mm deep in size.

Is this Vaillant boiler condensing or non-condensing?

The Vaillant EcoFIT Pure 835 is a condensing boiler – we recommend to all clients that they choose the very latest condensing boilers because their efficiency continues to improve year after year.

Condensing boilers recycle heat from both water vapour condensation and flue exhaust gases via a secondary heat exchanger. With this heat, it performs other tasks like warming up colder water returning from your radiator without having to use more gas.

You will save money on your gas bills every year by choosing a condensing boiler as well as benefitting the environment.

How does the Vaillant EcoFIT Pure 835 combi rate environmentally?

With more and more of us concerned about environmental issues and climate change, how we heat our homes has become an important issue to many homeowners.

Gas boilers are responsible for dangerous atmospheric levels of nitrogen dioxide emissions in Britain's biggest cities and, overall, 14% of the UK’s greenhouse gases are produced by our domestic central heating systems.

Let's take a closer look at whether installing a Vaillant EcoFIT Pure 835 combi would be a good choice for the environment.

An energy efficiency rating of 92% or above is a legal requirement for all boilers manufactured and installed in the UK today. 92% is equivalent to a low-to-middle "A" grade on the "Seasonal Efficiency of Domestic Boilers" (SEDBUK) scale.

Energy efficiency measures how much energy a boiler uses and wastes in the course of its normal operation. The lower the waste, the lower your gas bills.

The Vaillant EcoFIT Pure 835 was awarded an efficiency rating of "94%", equivalent to a "A" rating on the SEDBUK system.

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 EcoFIT Pure 835 is rated "A" for heat and "A" for water.

What is the warranty period on a Vaillant EcoFIT Pure 835 combi boiler?

The parts and labour warranty on the Vaillant EcoFIT Pure 835 lasts for 2 years.


Vaillant ecoFIT Pure 835 Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?No
P/L Warranty2 Years
Output in kW35 kW
Height700 mm
Width390 mm
Depth295 mm
MountingWall
Flow rate14 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 ecoFIT Pure 835 Combi Gas boiler

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  2. Vaillant ecoFIT Pure 835
Plumbproud rating for this boiler
90.17%

We scored this Vaillant ecoFIT Pure 835 Combi boiler at 90.17% on our internal benchmarking system. To determine a score, we take into consideration a number of different factors including the boiler's energy efficiency, installed price, likely running costs, and the length of the manufacturer's warranty.

On a standard fit, we would expect this Vaillant ecoFIT Pure 835 Combi boiler to cost you £2,200 supplied and fully installed by an experienced Gas Safe PlumbProud fitter.

For professional advice on whether the Vaillant EcoFIT Pure 835 is the right boiler for your home or to receive a free quotation, please call 01604 343053 to speak to our friendly team. You are also welcome to email us by clicking here or you can enter your postcode into the quotation box on this page.


Installed price guideline
£2,200

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Vaillant ecoFIT Pure 835 Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?No
P/L Warranty2 Years
Output in kW35 kW
Height700 mm
Width390 mm
Depth295 mm
MountingWall
Flow rate14 L/m
ERP HeatA
ERP WaterA

Vaillant ecoFIT Pure 835 Combi Gas boiler frequently asked questions

What type of boiler is Vaillant’s EcoFIT Pure 835 - system, regular or combi?

When looking for a combi boiler for your house or flat, the Vaillant EcoFIT Pure 835 might be a suitable option for you.

In many properties, combi boilers are more suitable than traditional types of boiler. Combi boilers heat water instantly on demand, which they draw directly from the mains supply, removing the need for storage tanks that can take up valuable space in your home.

A combi boiler is often the right choice for a smaller property, particularly if your home doesn't have a useable loft. As water is heated and delivered immediately rather than being kept warm for hours in an immersion tank, combi boilers reduce gas usage, thereby minimising your heating costs.

The main disadvantage of combi boilers is that they can only heat a certain amount of water at any one time. This means that, if two people are using different taps or showers within your home at the same time, the flow of heated water to each will be reduced, as will the water pressure and temperature.

Is the Vaillant EcoFIT Pure 835 combi boiler the right choice for my house or apartment?

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

Your boiler's output indicates the maximum amount of power available to it to heat the water you need to warm your radiators or when you want hot water from your taps. A higher output rate means that your boiler is capable of heating greater volumes of water.

If a boiler's output rate is too low, you'll often find that the water is not as hot as you want it to be. Too high, however, and you'll end up paying more for your gas than you should be.

The Vaillant EcoFIT Pure 835 combi boiler has an output rate of 35 kW, so which types of property would this be suitable for?

Most heating engineers would recommend that this Vaillant ecoFIT Pure 835 Combi boiler would be suitable for larger properties including detached homes with 15 or more radiators and two or more 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 Vaillant ecoFIT Pure 835 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.


What dimensions does a Vaillant EcoFIT Pure 835 have?

The Vaillant EcoFIT Pure 835 boiler is 700 mm high, 390 mm wide, and 295 mm deep.

Is the Vaillant EcoFIT Pure 835 condensing or non-condensing?

Condensing boilers convert the warmth present in flue exhaust gases and water vapour condensation into heat which they then recycle to increase the temperature of the colder water returning to your system.

We recommend that homeowners choose a condensing boiler like the Vaillant EcoFIT Pure 835 for this reason - the more recent your model the better because the technology improves every year.

You'll benefit from lower quarterly gas bills and condensing boilers are also much more environmentally friendly.

Is the Vaillant EcoFIT Pure 835 combi boiler environmentally friendly?

How we heat our homes is an issue which many homeowners worry about as the world combats climate change and environmental damage.

The power we need for our central heating systems accounts for around 14% of the UK’s greenhouse gas production. There are often dangerous levels of ambient nitrogen dioxide gases in the atmospheres of British cities because of our use of gas boilers.

Let's take a closer look at whether installing a Vaillant EcoFIT Pure 835 combi would be a good choice for the environment.

All boilers manufactured and installed in the UK are required by law to have an energy efficiency rating of at least 92%, equivalent to a good “A” rating on the SEDBUK scale. Before this, the minimum was 88% (ratings of 88% and 89% are equivalent to a high “B” SEDBUK rating and anything 90% or higher is an "A" rating).

A boiler's energy efficiency rating is designed to let you know how much energy is used and wasted during normal functioning.

The Vaillant EcoFIT Pure 835 was given an efficiency rating of 94% and a band rating of "A".

The Energy Related Products Directive (ERP) intends to reduce the amount of energy consumed by individual products over their entire lifetime, from the initial manufacturing process to final disposal and at all points in between.

The legislation is designed to encourage manufacturers to create products that are more environmentally friendly and which result in a reduction in harmful gas emissions.

The ERP rating for the Vaillant EcoFIT Pure 835 is "A" for heat and "A" for hot water production.

Am I covered if the Vaillant EcoFIT Pure 835 combi boiler breaks down?

On the Vaillant EcoFIT Pure 835, the manufacturer offers a parts and labour warranty of 2 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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