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Vaillant EcoTEC Plus 825 boiler

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Plumbproud rating

93.35%

Vaillant ecoTEC Plus 825 Combi Gas boiler

On the PlumbProud boiler quality benchmark scoring system, we have rated this Vaillant ecoTEC Plus 825 Combi boiler at 93.35%. Ratings are determined by considering a number of important factors including the energy efficiency, price installed, warranty length, and running costs of the boiler.

This Vaillant ecoTEC Plus 825 Combi boiler will cost approximately £2,300 supplied and fully installed through PlumbProud assuming that there are no unexpected complications during the fitting.

For a free, no-obligation quotation on this Vaillant ecoTEC Plus 825 Combi boiler or for our professional advice on whether the Vaillant EcoTEC Plus 825 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.


Installed price around

£2,300

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Vaillant ecoTEC Plus 825 Combi Gas boiler frequently asked questions

Is the Vaillant EcoTEC Plus 825 a system boiler, a combi boiler or a regular boiler?

The Vaillant EcoTEC Plus 825 is a combi boiler you may wish to consider if you want this particular type of boiler for your house or flat.

Traditional boilers need one or more large tanks to work - one to heat and keep water warm for immediate use and the other to store water intended for heating later. Finding space for these large tanks is difficult in British residential property - remember that our houses and flats are among the smallest in the world. This is the problem that combi boilers were designed to solve when they were introduced in the 1970s.

Combi boilers don't need a tank - instead, they instantly heat water drawn from the mains using technology inside the boiler. This hot water is then distributed immediately to your taps or radiators on demand.

The biggest disadvantage to combi boilers is that they have a maximum capacity for heating water, meaning that they work best when only one point within a household wants hot water. For example, if someone is taking a shower and another person uses a hot water tap at the same time, the water pressure, volume and temperature to both points drops.

Is the Vaillant EcoTEC Plus 825 combi boiler suitable 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 EcoTEC Plus 825 combi boiler has an output rate of 25.4 kW, so which types of property would this be suitable for?

Most Gas Safe engineers would suggest that the most suitable type of property for installing a Vaillant EcoTEC Plus 825 combi boiler would be smaller homes and apartments with up to 10 radiators and one bathroom.

In addition to output rates, you need to consider a combi boiler's flow rate when making your choice.

The flow rate of your boiler dictates the maximum volume of water (measured in litres per minute) that it can heat and distribute to your taps, showers and radiators at any one time.

However, a combi boiler like the Vaillant EcoTEC Plus 825 can only heat and deliver water at the rate at which it actually enters your property. For this reason, you should also find out what the mains pressure to your house is before purchasing a boiler.

It's pointless spending more money on a boiler with a 17l/m flow rate if the local water pressure is 11l/m. To give you an indication of average water demand, a power shower typically requires 12 litres of water per minute and a basin tap 4-8 litres. This Vaillant ecoTEC Plus 825 Combi boiler's flow rate is 11 L/m.

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 825 fit in my house?

Vaillant’s EcoTEC Plus 825 is 720 mm tall, 440 mm wide, and 338 mm deep.

Is the Vaillant EcoTEC Plus 825 a condensing or non-condensing boiler?

We always recommend to clients that they select the very latest condensing boiler for their home.

Condensing boilers like the Vaillant EcoTEC Plus 825 are more efficient with the gas they use in operation, meaning that you'll benefit from lower fuel bills. Condensing boilers are also better for the environment.

They achieve their efficiency by capturing and recycling the heat still present in the water vapour condensation and flue exhaust gases created when a boiler burns gas to get the energy it needs. It then reuses that recycled heat to perform a number of tasks, including heating the colder water that comes back to your boiler via the radiator.

Is choosing the Vaillant EcoTEC Plus 825 combi boiler environmentally friendly?

How we heat our homes has become a pressing issue of concern for many homeowners worried about climate change and the environmental impact of their personal choices.

Around 14% of the greenhouse gases produced in the UK is a result of our central heating systems. Gas boilers are responsible for dangerous levels of nitrogen dioxide emissions in some of our largest cities.

Will installing a Vaillant EcoTEC Plus 825 combi in your home be a positive contribution to the environment? The figures below will tell you more.

All new British boilers must perform to a legal minimum energy efficiency of 92% (a low to good SEDBUK "A" rating). Prior to April 2018, the target was 88% (86-90% = SEDBUK "B" and 90%+ = SEDBUK "A").

Efficiency ratings are intended to let consumers know how much energy a boiler uses in its day-to-day activities and how much energy goes to waste.

The Vaillant EcoTEC Plus 825 was awarded an efficiency rating of 94%, equivalent to a SEDBUK grade of "A".

All products that consume energy throughout their lifespan must comply with the Energy Related Products (ERP) Directive.

Companies are legally obliged to reduce harmful gas emissions at all stages of a product's life cycle, from initial manufacturing right through to final disposal as well as when the product is in actual use.

The Vaillant EcoTEC Plus 825 scores "A" for heat and "A" for water.

Will I be covered if the Vaillant EcoTEC Plus 825 combi breaks down?

You receive a parts and labour warranty of 5 years with the Vaillant EcoTEC Plus 825 boiler.


Vaillant ecoTEC Plus 825 Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty5 Years
Output in kW25.4 kW
Height720 mm
Width440 mm
Depth338 mm
MountingWall
Flow rate11 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 825 Combi Gas boiler

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  2. Vaillant ecoTEC Plus 825
Plumbproud rating for this boiler
93.35%

We score this Vaillant ecoTEC Plus 825 Combi boiler as 93.35% on the PlumbProud quality scoring system. Our rating is based on various factors, including the installation price, the length of the manufacturer's warranty, and the expected energy efficiency and operating costs.

Provided the proposed installation is straightforward, we would anticipate that this Vaillant ecoTEC Plus 825 Combi boiler will cost £2,300 fully installed through PlumbProud.

To contact us, please enter your postcode in the quote boxes on this page, click here to email us, or give us a call on 01604 343053. We can provide you with a free quote on the Vaillant EcoTEC Plus 825 boiler and offer professional advice and guidance on whether this Vaillant ecoTEC Plus 825 Combi boiler is the right choice for your home.


Installed price guideline
£2,300

Get your free quote

Vaillant ecoTEC Plus 825 Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating94%
Band ratingA
LPG Compatible?Yes
P/L Warranty5 Years
Output in kW25.4 kW
Height720 mm
Width440 mm
Depth338 mm
MountingWall
Flow rate11 L/m
ERP HeatA
ERP WaterA

Vaillant ecoTEC Plus 825 Combi Gas boiler frequently asked questions

Is the Vaillant EcoTEC Plus 825 a combi boiler, system boiler or regular boiler?

If you’re looking for a combi boiler for your house or flat, then the Vaillant EcoTEC Plus 825 is one you may wish to consider.

Combi boilers were introduced by manufacturers in the 1970s to offer British homeowners a way to cheaply and reliably heat their homes and have hot water without taking up too much space. Previously, most boilers had one or more storage tanks, which either heated water and kept it warm or held water to be heated later.

With combi boilers, there is no need to find space for large tanks around your home as the hot water needed for your radiators and taps is available on demand. Combi boilers do this by drawing water from your mains supply, heating it instantly whenever you need it and then distributing it to where it's needed in the home.

The major disadvantage to combi boilers is that they have a maximum capacity for heating water. In a larger household, water pressure, volume and temperature will drop if two or more people are trying to use hot water at the same time.

Should I install a Vaillant EcoTEC Plus 825 combi boiler in my house or flat?

Whether this Vaillant ecoTEC Plus 825 Combi boiler is right for your property depends on its size or what its "output" level is. Size does not mean its physical dimensions, however - it means how powerful it is.

The output rating indicates how much energy a boiler can use in providing you with hot water and heat when you need it from your radiators and taps. The greater the output, the more water it can heat.

It's better to take advice on this from a registered installer because, if your boiler output is too low, your water and radiators might not get as hot as you would like them to be. However, if the output level is too high, you'll end up paying more on your gas bills than you need to.

Which types of property would this Vaillant ecoTEC Plus 825 Combi boiler be appropriate for given its output of 25.4 kW?

Most experienced boiler engineers would recommend this Vaillant ecoTEC Plus 825 Combi boiler as a suitable option for smaller homes and apartments with no more than up to 10 radiators and one bathroom.

When choosing a combi boiler for your home, you need to think about "flow rates" as well as output rates. This Vaillant ecoTEC Plus 825 Combi boiler's flow rate is 11 L/m.

This indicates the maximum volume of hot water (measured in litres per minute) that your boiler can heat then distribute to your taps, showers and radiators at any one time. The greater the demand for hot water in your home, the higher the flow rate you will require.

However, all combi boilers like the Vaillant EcoTEC Plus 825 draw water directly from the mains and heat it instantly.

This means that they can only heat and distribute water at the rate it enters the property (the "mains pressure" rate). For example, if your mains pressure is 11 litres per minute, this will be the highest flow rate you can achieve even if your boiler's flow rate is 17l/m.

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 dimensions of the Vaillant EcoTEC Plus 825 are

The Vaillant EcoTEC Plus 825 is 720 mm tall, 440 mm wide, and 338 mm deep in size.

Vaillant EcoTEC Plus 825 – condensing or non-condensing?

The Vaillant EcoTEC Plus 825 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 Vaillant EcoTEC Plus 825 combi environmentally friendly?

With growing concern among the public about accelerating climate change, how we heat our homes and the impact this has on the environment has become a major topic of concern for many homeowners.

Around 14% of the greenhouse gases produced in the UK is a result of our central heating systems. Gas boilers are responsible for dangerous levels of nitrogen dioxide emissions in some of our largest cities.

Would choosing the Vaillant EcoTEC Plus 825 combi help the environment? Let's see what the statistics suggest.

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 EcoTEC Plus 825 was awarded an efficiency rating of "94%", equivalent to a "A" rating on the SEDBUK system.

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 Vaillant EcoTEC Plus 825 is "A" for heat and "A" for hot water.

Is there a warranty on the Vaillant EcoTEC Plus 825 combi boiler if it breaks down?

The Vaillant EcoTEC Plus 825 boiler offers a parts and labour warranty of 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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