Our website uses cookies to help provide you with the best experience tailored to your interests. To use the website with full comfort, please accept to receive all cookies on our website. For more information with regard to Cookies please see our Privacy policy.

Accept Decline

Combination Boilers

Vaillant’s range of reliable high quality combi boilers delivers for all house types from a one-bedroom / bathroom flat through to a four-bedroom property with two bathrooms. Our combi range covers 25kW to 43kW and we have a unique storage combi for 20 l/min flow rate.

ecoTEC exclusive with Green iQ

  • The best in boiler performance, control and efficiency
  • Fully compatible with our vSMART™ heating control for optimum performance and smartphone app control
  • Eco-friendly and 85% recyclable
  • Hand-assembled 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

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
  • 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

ecoTEC pro 24, 28 and 30kW

Combination boiler range

  • Removable side panels and push-fit flue system
  • Fully modulating low NOx burner and fan
  • ErP 'A' rated
  • Standard 2 year warranty, can be upgraded to a free 5 year warranty when registered through Vaillant Advance.

ecoFIT sustain 25, 30 and 35kW

Social housing combination boiler range

  • Designed for specification in the social housing market
  • Quiet Mark awarded
  • High efficiency ErP 'A' rated product
  • High quality lightweight aluminium heat exchanger with excellent power to weight ratio
  • Modulating high torque pump uses low energy

ecoTEC sustain 24, 28, 34kW

Social housing combination boiler range

  • Designed for specification in the social housing market
  • Quiet Mark awarded
  • High efficiency ErP 'A' rated product
  • High quality stainless steel heat exchanger designed for long life and easy maintenance
  • New condensate trap with safety back-up

ecoFIT pure 25, 30 and 35kW

ecoFIT pure combination boilers

  • Top and rear flue options
  • Automotive grade aluminium heat exchanger
  • Easy installation and maintenance
  • Standard 2 year warranty. Free 7 year warranty when registered by a Vaillant Advance partner (promotion until 31/12/18)