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Vaillant ecoTec Plus 412 Regular Boiler - Review

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Our next Vaillant boiler review will provide a full rundown of the ecoTec Plus 412 Regular, to help you decide whether it’s the best boiler for your property.

The German brand Vaillant is one of Europe’s leading boiler manufacturers. It was responsible for the development of water heaters in the early 1900s and a pioneer of the combi boiler over 35 years ago. Today, Vaillant is known for its first-class heating systems, which boast excellent eco-credentials and exceptional reliability. With boilers to suit all domestic properties, you’re sure to find the right one for your home.

Let’s find out if it’s the ecoTec Plus 412.

Is the Vaillant ecoTec Plus 412 Regular suitable for my home?

The Vaillant ecoTec Plus 412 has a central heating output of 12kW and is, therefore, best suited to smaller homes with up to 10 radiators. If you haven’t already, do a quick count up and see how many you’ve got.

As the Vaillant ecoTec Plus 412 is a regular boiler, it will need both a hot water cylinder and a cold water storage cistern, which is usually located in a loft. Regular boilers aren’t often the best choice for properties with limited space. However, if you already have one installed and are looking to upgrade it with a more energy efficient model, the 412 is definitely worth your consideration.

The Vaillant ecoTec Plus boasts a high-spec aluminium heat exchanger, which is designed for longevity, easy maintenance and lower energy bills. The boiler can also be installed as part of a heat pump hybrid system, offering a renewable solution to homeowners.

If you have just one bathroom in your home and low demand for hot water, the ecoTec Plus 412 will be a good fit. Households with multiple bathrooms or more than 10 radiators, will require a boiler with a higher output. We recommend looking at the ecoTec Plus 418, 424, 430 or 435 instead. The numbers reflect the level of output provided, i.e. the ecoTec Plus 430 has a central heating output of 30kW.

Alternatively, you may want to compare the ecoTec Plus 412 Regular with a boiler from another brand, and for this, we recommend the Worcester Bosch Greenstar 12Ri Regular boiler. It offers the same central heating output of 12kW but is slightly more slimline than the Vaillant 412, with a depth of 270mm, compared to 316mm.

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Vaillant ecoTec Plus Regular Controls

The Vaillant ecoTec Plus 412 has a large backlit display screen, making it easy to see the boiler’s current operation mode and status. It also has push-button programming for basic control over your temperature settings, and is pretty straightforward to use.

Ensure your Vaillant regular boiler is compliant with Boiler Plus (the industry regulations introduced in April 2018) by installing a smart thermostat. This will give you greater control over your boiler’s time and temperature settings. You may also have the opportunity to optimise its performance to suit your needs better and potentially lower your energy bills too.

Vaillant has a full range of smart thermostats compatible with the ecoTec Plus 412, including the Vaillant vSmart smart thermostat. These devices allow you to control your heating and hot water programmes and benefit from additional settings like ‘holiday mode,’ which will turn your heating off while you’re away.

However, you don’t have to stick with Vaillant. There are plenty of other third-party smart thermostats available. Take a look at the Nest and Hive. Both offer extensive functionality, allowing you to programme heating and hot water settings from any location, using their handy mobile apps.

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Vaillant ecoTec Plus 412 Size

Measuring 600x375x316mm, the ecoTec Plus 412 is relatively compact in size and may possibly fit into a kitchen cupboard, though we’re not making any promises! Always measure up first to be on the safe side.

If a kitchen cupboard isn’t a possibility, you shouldn’t find it too hard to find an alternative siting. The Vaillant ecoTec Plus 412 has a flexible rear flue option so it can be installed virtually anywhere. Our expert engineers are on hand to provide guidance if you need it.

Vaillant ecoTec Plus 412 Regular Warranty

Every Vaillant ecoTec Regular boiler installation carried out by Hometree comes with a 5-year warranty as standard. We can double this to 10 years for a small extra charge.

All of our Gas Safe heating engineers are highly experienced and have the skills to carry out first class boiler installations in all domestic properties. But don’t take our word for it! Read the reviews. Hometree is a Which? Trusted Trader and rated Excellent on TrustPilot.

Vaillant ecoTec Plus 412 Energy Efficiency

Today all boilers are required to have an ErP rating, which tells you how energy efficient they are. The good news is the ecoTec Plus 412 has an ErP of 89.3%, giving it an A-rating overall. To sum this up, it delivers high levels of efficiency and low running costs.

If you choose to swap an older regular boiler model for the more efficient, Vaillant 412, you are likely to see a reduction in your energy costs. In addition to this, you’ll be reducing your carbon footprint. So it’s good news for everyone!

Verdict – Is the Vaillant ecoTec Plus 412 the best boiler for you?

If you are looking to upgrade your existing regular boiler heating system, with a new, more energy efficient model, the Vaillant ecoTec Plus 412 is sure to tick all of the boxes. It’s relatively small and lightweight for easy installation and paired with a smart device and controller, you’ll gain complete control over its cycles and settings.

The Vaillant ecoTec Plus’ 12kW output is relatively low, but hey, not everyone needs a lot of power! If your home is a modest size with fewer than 10 radiators, it’ll be more than adequate for the job. Why pay more for a larger boiler, you don’t actually need?

Like the sound of the Vaillant ecoTec Plus 412 Regular Boiler? Get in touch with the experts at Hometree today to organise your installation.

 Vaillant ecoTec Plus 412 Regular
ErP rating (energy efficiency)A (89.3%)
Size (HxWxD in mm)600x375x316
Heating output (kW)12
Standard warranty (years)5 (extended warranties available)

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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 412 Regular boiler 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%

Boiler manual

Vaillant ecoTec Plus 412 Regular boiler manual