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Last updated: 9th April, 2024


Vaillant EcoTEC Plus Review

Vaillant EcoTEC Plus Review

Key takeaways

  • Vaillant boilers are amongst the most efficient and environmentally friendly in Europe.
  • The ecoTec Plus is compact enough to fit into a standard sized kitchen cupboard.
  • This combi is even powerful enough to service large homes or propeties with multiple bathrooms.

Vaillant UK manufactures some of the finest boilers on the market, highly efficient and eco-conscious, it’s no wonder why we’re so proud to partner with them.

Vaillant UK manufactures some of the finest boilers on the market, highly efficient and eco-conscious, it’s no wonder why we’re so proud to partner with them.

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In this blog we’ll be reviewing the Vaillant ecoTEC Plus, including its key features, specifications and price.


Vaillant is a well-known global manufacturer of boilers with a rich heritage spanning over 140 years. The company was founded in Germany in 1874 and has since established itself as one of Europe's leading family-owned businesses in the heating industry.

With a focus on combining energy efficiency and heating functionality in their products, Vaillant continues to thrive globally, offering reliable and innovative heating solutions to customers around the world. 

Despite its long history, Vaillant remains at the forefront of the industry, consistently striving to improve and meet the ever-changing needs of its customers.


Vaillant ecoTEC

Sustainability is at the heart of Vaillant's boiler designs, as the company recognizes the importance of protecting the environment. 

Vaillant is committed to working towards climate protection targets and is widely regarded as a leading manufacturer of eco-friendly heating and cooling technology.

Vaillant's high-efficiency boilers are designed to help customers reduce their energy consumption and CO2 emissions significantly. By installing one of these boilers, customers can save up to 30% on their energy bills and reduce their property's carbon footprint by a similar amount.

The ecoTEC range of boilers is a shining example of Vaillant's commitment to the environment. These boilers offer powerful heating solutions that are not only eco-friendly but also durable and cost-effective in the long run. 

By investing in a Vaillant boiler, customers can enjoy reliable heating that is both environmentally conscious and economical.

Vaillant ecoTEC plus

Technical Specifications

Efficiency rating


Efficiency class


kW output

25kW, 32kW, 35kW

Flow rate L/MIN

10.5, 13.0, 14.3

Dimensions H W D mm

440 X 720 X 338 (372  35kW)

Key Features

  • Vaillant’s ecoTEC plus has been deemed excellent for its efficiency, classified with an ErP of A. With an operational efficiency of 89.3%, it is sure to help reduce your energy bills while also being kinder to the environment.

  • The compact and lightweight design of this boiler makes it easy to install, making it ideal for small spaces. It can be installed in a large cupboard or airing cupboard space thanks to its reduced size, or it can be wall-mounted for even greater convenience. This flexibility means that it can be installed in a variety of locations, depending on your needs.

  • The simple-to-use controls with a backlit display make it easy to set the temperature and control the heating system, giving you complete control over your home's heating. The backlit display also makes it easy to read in any lighting conditions, ensuring that you always know what is happening with your heating system.

  • Awarded Quiet Mark recognition for excellence in sound reduction related to operational volume.

  • The boiler includes a stainless steel heat exchanger and premium high-quality components, ensuring that it is reliable and designed to last long after the warranty period has expired. This ensures that you get the most out of your investment, as you can rely on it to provide efficient and reliable heating for years to come.

  • With a maximum heating output of 38 kW, this boiler is capable of meeting the heating needs of larger homes or commercial properties. Whether you are looking to heat a large home or a commercial property, this boiler is an excellent choice, providing efficient and reliable heating to keep you warm and comfortable all year round.

Vaillant ecoTEC Price

Vaillant is a premium boiler brand that is well-known for its high-quality and reliable products. While a new Vaillant boiler may cost slightly more than a budget alternative, it is worth the investment as you get what you pay for in terms of reliability and excellence.

While budget boilers may seem like a more affordable option initially, they may end up costing you more in the long run due to higher maintenance and repair costs. In contrast, Vaillant boilers are designed to last and provide consistent performance, ensuring that you get the most out of your investment in the long term.

A brand new Vaillant ecoTEC plus from iHeat (including Gas Safe expert installation) will cost around £2,845 for 25kW output, £2,945 for 32kW, and £3,045 for 35kW. Great value for money considering how capable and premium Vaillant boilers are known to be.

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When Should I Replace My Boiler?

If your boiler is showing signs of serious degradation or function impairment, it’s time to replace it.

If possible, summertime is the best time to replace a boiler as you’re less reliant on central heating in hotter months and engineers are usually less busy.

Anytime a boiler is between 10-15 years old, you should look into having it replaced, even if it’s only showing signs of general wear and tear, component failure or performance degradation often becomes increasingly likely.



iHeat strives to simplify the process of obtaining a quote and installing a new Vaillant boiler. That's why we offer free, fixed-price quotes that can be generated in just 60 seconds. 

Our goal is to make the entire process as easy and hassle-free as possible for our customers.

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Frequently Asked Questions

What Kind of Boiler is a Vaillant ecoTEC Plus?

The Vaillant ecoTEC Plus is a high-efficiency condensing boiler available in combi, system, and open vent (regular) models. It's designed for providing both heating and hot water in a more environmentally friendly and cost-effective manner. Known for its reliability, the ecoTEC Plus series offers a variety of outputs to suit different home sizes and heating demands, incorporating advanced technology for optimal performance and efficiency.

How Do I Reset My Vaillant ecoTEC Plus Boiler?

To reset a Vaillant ecoTEC Plus boiler, look for the reset button on the boiler's control panel. This button is usually marked with a circular arrow symbol. Press and hold the button for a few seconds until the boiler restarts. This can clear certain fault codes and minor issues. If the problem persists, consulting the user manual or a professional technician is advised for further troubleshooting.

How Old is a Vaillant ecoTEC Plus Boiler?

The age of a Vaillant ecoTEC Plus boiler can be determined by its serial number or the documentation provided at installation. The ecoTEC Plus range has been in production for several years, with various models introduced over time. Checking the serial number with Vaillant’s customer service can provide you with the exact age of your boiler.

How Long Does a Vaillant ecoTEC Last?

A Vaillant ecoTEC boiler can last between 15 to 20 years, with proper maintenance and servicing. Regular annual check-ups by a qualified technician can extend the lifespan of the boiler by ensuring it operates efficiently and any wear and tear are addressed promptly.

Is It Worth Replacing a 20-Year-Old Boiler?

Yes, replacing a 20-year-old boiler is often worth considering due to advancements in technology and efficiency. Newer models are more energy-efficient, environmentally friendly, and can significantly reduce heating bills. Additionally, older boilers are more prone to breakdowns and may not meet current regulations for efficiency.

How Much Does It Cost to Install a New Vaillant Boiler?

The cost to install a new Vaillant boiler varies depending on the model, the complexity of the installation, and local labor rates. On average, installation costs in the UK can range from £1,500 to £3,000, with high-end models or complex installations potentially costing more. Obtaining multiple quotes from certified installers can ensure you get a competitive price.

How Long Does It Take a Plumber to Install a New Boiler?

The time it takes to install a new boiler can vary widely but typically ranges from one to three days. A straightforward replacement might be completed in a day, while more complex installations requiring modifications to the piping or the relocation of the boiler can take two to three days. The exact time frame depends on the specifics of the installation and any additional work required.

Stephen Day profile photo
Article by
Stephen Day | Co-founder
Gas Safe registered and FGAS certified engineer with over 20 years experience in the heating and cooling industry.