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VAILLANT ECOTEC PLUS 825 COMBI BOILER - REVIEW

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Vaillant, founded in Germany in 1874, is Europe’s second largest boiler manufacturer. Vaillant’s work developing highly efficient energy products has led to an increasing demand for their boilers - directly competing with the UK’s homegrown energy product manufacturer, Worcester Bosch.

In today’s review, we’ll be taking a closer look at the Vaillant ecoTec Plus 825 combi boiler.

Will the Vaillant ecoTec Plus 825 be suitable for my home?

The Vaillant ecoTec Plus 825 is recommended for homes with up to 3 bedrooms and 1 bathroom. The 825 offers a central heating output of 19.3kW, which will be sufficient to cater for smaller properties. If you’re considering a combination boiler as a replacement to a system or regular boiler, please be aware that if you have more than one bathroom, a combi boiler may not be able to supply enough hot water to cater for your home’s hot water demand. You may be better off with a system or regular boiler to prevent dwindling water pressure.

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Controls

Like other combination boilers, the ecoTec Plus 825 has a standard control panel installed under the flap at the front of the boiler. The controls allow you to switch off the boiler or lower its output. Due to the simplicity of the 825's control panel, it’s now easier for an engineer to be able to find any issues with the boiler and diagnose any issues over the phone. Modern boilers are easier to diagnose and call-out fees have been significantly reduced. The build of the boiler itself is also relatively simple, which makes replacing parts and finding spare parts considerably easier.

Seeing as the controls installed on the boiler won’t be enough to have full control of your heating and hot water, Vaillant offers a wide range of controls from mechanical to smart options. Smart thermostats allow you to have all of the control of managing your heating and hot water from your smartphone or tablet.

Smart thermostats come bundled with a smartphone app, which will allow you to schedule your heating, monitor energy use, and remotely switch your heating on and off while you’re away from home as long as you have an internet connection. If you’re not overly keen on the idea of a smart thermostat, you can opt for a wireless programmable thermostat which still gives you scheduling features.

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Size

The Vaillant ecoTec Plus 825 measures at 720x440x338mm, which means it may not be suitable for a standard kitchen cupboard. If you’re searching for a more compact combination boiler, the Worcester Greenstar 25Si Compact is your best bet.

Warranty

Each Vaillant boiler model from the ecoTec range comes with a standard 5-year warranty free of charge for your peace of mind. You can also benefit from an extended warranty of up to 10 years if you decide to install with Hometree.

Energy Efficiency

The ecoTec Plus 825 is an efficient and high-performance boiler, with an ErP (Energy-related Products) rating of 89.3%, which is an A-grade for efficiency. So, in addition to incredible performance, you will start saving money on your energy bills while playing your part in the reduction of carbon emissions.

The ErP directive tests energy products to ensure that they pass specific criteria for performance and efficiency. If a boiler is tested and fails the tests, the directive will step in to recommend design improvements to reduce the amount of energy wasted, thus reducing carbon footprint.

Verdict

The Vaillant ecoTec Plus 825 is perfect for smaller homes, especially if you have one bathroom with a shower installed and up to 3 bedrooms. The entire ecoTec Plus range offers boilers with a high-quality finish and savings on your energy bills through reduced energy wastage. In addition to high efficiency, the ecoTec Plus boiler range has been awarded the QuietMark for reduced-noise design.

If you’re interested in the Vaillant ecoTec Plus 825 combination boiler, we currently offer the boiler complete with installation and a range of extended warranties and finance plans. You can also take a look at the rest of our Vaillant combi boiler range here.

 Vaillant ecoTec Plus 825
ErP rating (energy efficiency)A (89.3%)
Size (HxWxD in mm)720x440x330
Heating output (kW)19.3
How water output (kW)25
Flow rate (litres/min)10.5
Standard warranty (years)5 (extended warranties available)
Other available sizes (kW)32, 35, 38

Which? boiler review

The consumer group Which? review each boiler on the market to find the most (and least) reliable boilers according to a survey completed by thousands of boiler owners. In each review, Which? supply a brand score percentage and star ratings for each category. Take a look at the Vaillant ecoTec Plus 825 ratings below:

Which? Score 
Efficiency rating★★★★★
Brand reliability★★★★☆
Brand customer score★★★★★
Ease of repair★★★★★
Ease of service★★★★★
Availability of parts and spares★★★★★
Build quality★★★★★
Engineer recommendation★★★★★
Brand score80%

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If you'd like to learn more about the Vaillant ecoTec Plus 825 combination boiler, check out our quick video review below:

Video transcript

Vaillant ecoTEC Plus 825 Combi Gas boiler review from Hometree. Welcome to Hometree, home of the stress-free boiler installation. Looking for a boiler replacement? or just want to know about this Vaillant combi boiler? Hometree Heating Experts have all of the information you need to find out which is the best new boiler for you. This is a review of the Vaillant ecoTEC Plus 825 combi boiler model which we hope gives you enough information to make an educated decision when weighing up the best combi boiler brands and models to find the most suitable boiler replacement for your central heating and hot water needs. At Hometree, we can find the best new boiler for your needs in just 90 seconds, by asking simple questions about your home, either online or over the phone getting a new boiler installed within 7 days. Just visit www.Hometree.co.uk to find the new ideal boiler for your home and your get your new boiler cost. The Vaillant ecoTEC Plus 825 is a combi gas boiler. Your home may require a combi boiler, a system boiler or a regular boiler. To find out which contact Hometree today. Is the Vaillant ecoTEC Plus 825 suitable for my home? This boiler offers a central heating output of 19.3 kilowatts and a hot water output of 25 kilowatts. In real terms, this boiler will be suitable for your home if you have up to 3 bedrooms and 1 bathroom with one shower installed. This boiler can power up to 12 or 13 radiators. You will also benefit from a Vaillant 825 flow rate of 10.5 litres per minute, which offers you a great heating and hot shower experience if your home has one shower. Can I trust Vaillant as a Manufacturer? Vaillant is currently Europe’s second largest boiler manufacturer. They are renowned for their development of environmentally friendly products, with innovations in quiet-design features. Which? Verdict gives a brand score of 80% and state that this is one of the best boiler brands you can buy, they consider the brand a 'best buy' - Which customers have given it 5 stars. They praise - the fact that the boiler does not require a hot water cylinder or a cold water tank in the loft - Vaillant's ecoTEC plus range of combi boilers provide almost instant hot water to your tap or shower straight from the mains water supply. All in all, Vaillant makes fantastic boilers and have a good reliability record. Looking for energy efficient boilers? The Valliant ecoTEC Plus 825 combi is an efficient, high-performance boiler and as such is ErP A-rated with an efficiency rating of 89.3%. By replacing your older boiler with a new energy efficient boiler, You will make savings on your energy bill of 30% as well as doing your bit for the environment by reducing carbon emissions. What size is the Vaillant ecoTEC Plus 825? Will this fit in my home? The Vaillant ecoTEC Plus 825 measures at 720x440x330mm which isn’t the most compact in terms of new boiler sizes so it probably won't fit in that little cupboard in your kitchen. If space is tight, you might need to look into a more compact boiler, and Hometree Heating Experts can help you look at the options available to you. How long is the boiler warranty of a Vaillant combi boiler? The warranty you receive with the installation of a Vaillant boiler will vary depending on who you get to install it for you. Each Vaillant boiler model from the ecoTEC range comes with a standard 5-year warranty. But if Hometree installs your new boiler you will benefit from an extended warranty of 10 years of peace of mind. Boilers usually last for 10 to 15 years so you won't have to think about replacing your boiler again for some time. Vaillant boiler controls. What controls come with the Vaillant ecoTEC Plus 825? Like most combi boilers, the Vaillant ecoTEC Plus 825 has a standard heating control panel installed on the front of the boiler, hidden away by a flap. The boiler controls allow you to increase or decrease the output of the boiler, as well as switching the boiler on or off. If anything goes wrong with the boiler - the Vaillant display on most of their gas combi boilers shows a fault code which means that you can discover the problem and the solution without an engineer having to actually open up the boiler and investigate. Modern boilers are generally easier to diagnose which reduces call-out fees. The build of this Vaillant combi boiler itself is also relatively simple, which makes replacing components and parts easier. The controls installed in the boiler won't allow you to take full advantage of your central heating system as a smart thermostat can. This modern and technology-driven alternative to the traditional programmable Vaillant thermostat Allow you to control your heating and hot water from your smartphone. Smart thermostats can turn your heating on and off as you leave or approach home. A smart thermostat means a smart boiler. So all Hometree boiler installations come with a FREE smart thermostat. If you’re interested in the Vaillant ecoTEC Plus 825 or just need some help to find your ideal boiler, Hometree offers this boiler and others complete with installation, a smart thermostat, a 10-year warranty and a range of flexible finance options. At Hometree, we know that a warm home is too important for a broken boiler to get in the way. Visit www.hometree.co.uk to find your ideal boiler.