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The Vaillant EcoTec Plus 838 is one of the most powerful combi boilers on the market. Within 5 seconds you will have hot water on demand. It’s fully ErP compliant, has an efficiency rating of 89.4% and achieves high flow rates. Our Vaillant Ecotec Plus 838 Review will give you all the information necessary when considering this boiler.

It’s a robust boiler with a compact design (440mm width x 720mm height x 406mm depth). With this boiler you won’t need a cold water tank or a hot water cylinder installed in your loft, which makes installation much simpler. It runs on your gas mains but if you prefer, can be converted to run on LPG (liquid petroleum gas) instead. It delivers an impressive 15.9 litres of hot water per minute and it can easily cope with two baths being run at the same time.

ecotec plus 838

The Vaillant EcoTec Plus 838 is also one of the quietest combi boilers you can buy and has been awarded Quiet Mark accreditation. The fitting location is for you and your installer to decide, the compact design ensures that you have option. You can choose to have your boiler installed in your garage, airing cupboard, kitchen or utility room. It has a blue backlit scrolling text display which is ideal when lighting isn’t the best.

A great plus point of this combi boiler is that it offers advanced modulation when you only need a few radiators on. This means that it’s very efficient as it only consumes a small amount of energy during these times.

The Vaillant EcoTec Plus 838 been specifically designed for medium and large properties with 2 or more bedrooms and 2 bathrooms. If your home is smaller than this, then you might be better opting for a less powerful but more economical boiler from the Vaillant range like the Vaillant ecoTEC Plus 832 or Vaillant ecoTEC Plus 835.