ecoTEC plus 825, 832, 835, 838 and 938

ecoTEC plus combination boilers

  • Step by step full text installation wizard
  • Dedicated models available for LPG
  • ErP 'A' rated
  • Hand-built in our award-winning Derbyshire manufacturing plant
  • 5-year guarantee as standard, with 7 years available when you book a Vaillant Advance installer or 10 years when fitted with a Boiler Protection Kit by a Vaillant Advance installer*


*10 year guarantee only available on boilers with an output of up to 45kWs

The ecoTEC plus range of high efficiency boilers combine fantastic efficiency levels and high performance with great usability. Thanks to continuous modulation and real combustion control by a multi-sensor system, they achieve high efficiency at the lowest emissions.




Alternative products

Alternative products

aroTHERM hybrid air source heat pump

  • The perfect entry into renewable systems
  • Four models in the range 5kW, 8kW, 11kW and 15kW
  • Unique triVAI® intelligent control system
  • Compatible with all boiler systems Gas, oil and LPG
  • Total system solution Available in an easy to order pack