ecoTEC plus 415,418,428,438

The ecoTEC plus range of high efficiency open vent boilers offers fantastic efficiency levels and high performance, with great usability.

For homes which already use a traditional open vented system (with a storage cylinder and cold water tank), this extremely compact, highly versatile and kitchen friendly boiler makes the perfect upgrade.

Using premium components and displaying all the in-built quality you’d expect from Vaillant, the ecoTEC plus open vent boiler offers exceptional reliability and performance, making it one of the best models available today within this category.

The range is available in 15kW, 18kW, 28kW, and 38kW models meaning there is a suitable model for almost any home. The stylish design and small dimensions also make it a perfect fit with your home and your lifestyle.

What type of home could this be suitable for?


With a wide range of models from 15kW – 38kW the ecoTEC system boiler range has something for all types of property which already use an open vented system (featuring a hot water cylinder and a cold water tank). Your installer should carry out a full heat loss calculation taking into consideration the age and size of your property to determine which model is best suited to your home.

How much will it cost to install?


Depending on your system requirements, a boiler replacement installation of this kind typically costs between £2000–£3000*.

How much could I save per year on my energy bills?

When installing this type of system along with weather compensating controls and an outdoor sensor, You could save up to approximately £255 on your gas bill per year*.

Will this help me to reduce my carbon footprint?

Yes, by upgrading an old standard gas boiler to this new system (with weather compensating controls and an outdoor sensor) you could save up to approximately 1,265 kg of C02/year*.

How long will it take to install?

Typically between 1-2 days, however installation may be longer for some systems where radiators and pipe work need replacing.

What guarantee is included with this product?

5 years as standard or 7 years when installed by a Vaillant Advance installer

*Installation costs, carbon savings and gas bill savings are all based on replacing an older G rated appliance in a typical 3 bedroomed mid 20th century house with an ecoTEC plus open vent boiler and a VRC 470F weather compensating control and outdoor sensor using SAP standard calculations. Costs shown for upgrading this system are based on typical equipment and installation costs, and are shown for illustration purposes only. To obtain an accurate quote for installing this system, in your home, please seek the advice of a Gas Safe registered installer.

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Features & Benefits

  • Highly efficient and economical to run with up to an 89.2% efficiency rating (SAP 2009)
  • Exceptional flexibility for siting owing to compact dimensions and kitchen friendly, stylish design
  • Push button programming makes usage straightforward and easy to fit with your lifestyle
  • Built in 2 stage frost protection to ensure optimal performance all year round
  • Compatible with LPG for off gas areas (418 – 438 models)
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How to buy this product

Contact an installer using our find an installer search.

An installer will call you as soon as possible to arrange a visit.

During the visit, your installer will provide a quote to arrange the installation.

Installation usually takes 1-2 days

Once installed, you can register your
guarantee here.