The NEW Vaillant ecoTEC Plus 826, 832, 836 and 840 combi boilers have a refined and enhanced internal layout, with easy access to all major components, making installation and servicing effortless.

It is compatible with all Vaillant accessories and technologies, including most of our range of controls (excluding timeSWITCH 150 and timeSWITCH 160), flues, Boiler Protection Kits and renewable heating systems.

The Vaillant ecoTEC Plus range also has a new intuitive semi-touch interface, allowing for effortless first-time installation and set-up, with guided commissioning and set up wizard and easy to follow navigation.

• 5 years guarantee standard or 10 years available when installed and registered with a Boiler Protection Kit by a Vaillant Advance installer
• Automatic LPG conversion on most outputs (excluding ecoTEC plus 840, 940 and 635), completed in minutes using the new intuitive interface, with no additional parts required.
• New IoniDETECT technology, intelligent gas combustion monitoring, helping the new ecoTEC plus reach wider modulation range of up to 1:10, for even greater system efficiency.
• Sharpened intelligence with linBUS technology enables more intelligent and accurate reading of flow rate and pressure differential via internal pump for improved performance.
• Hydrogen prepared, suitable to work safely and efficiently with up to 20% hydrogen mix.
• Familiar footprint and external layout, retaining the same case dimensions, boiler footprint, flue position and pipe connections for an effortless like for-like swap.
• Smart home ready – works alongside the new plug-and-play myVAILLANT connect internet gateway, for easy connection with most Vaillant controls (excluding timeSWITCH 150 and timeSWITCH 160) and app connectivity in minutes.