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ecoTEC boiler range Heating systems with future thinking


Since 1874, we have engineered innovative heating systems to create smart, more comfortable homes for millions of people all around the world. From the world’s first ever gas fired water heating system with hot water to our award winning Vaillant ecoTEC boiler range, we’re creating products that meet the standards and demands of tomorrow.

Choose our boilers and you choose the pioneering excellence of German design and UK manufacturing expertise, crafted for modern homes and lifestyles.


It’s fair to say that some of the terminology around boilers and central heating systems can be confusing, which is why we always advise contacting a qualified heating engineer who can advise on the best heating system for your home.

Click here to find your local installer


Advance is Vaillant’s installer loyalty scheme. By choosing a Vaillant Advance Partner, you’re choosing our network of fully trained, independent installers who can offer you exclusive extended guarantees, as well as a free no obligation quote to ensure your Vaillant boiler is the perfect fit for you and your home.

Take a look at Combination boilers

A combi boiler heats water as you draw it from the tap. It doesn’t need a water storage tank or a cylinder because the boiler’s connected directly to the water mains, heating water as it’s needed

Take a look at our System boilers

System boilers need a cylinder to store hot water, but system components are built into the boiler itself, therefore no need for a tank in the loft.

Take a look at our open vent boilers

An open vent boiler is so called because it is linked to an outside vent. The system provides central heating and hot water by using both a storage cylinder and water tank, which give ultra-efficient operation.

Boiler Finder

Looking for a new boiler for your home? We've created a tool that will help recommend a boiler system based on a few simple questions about your home and heating requirements.

This tool is a guide and we strongly advise that you consult a professional heating installer as each installation and heating requirements are unique.