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

Open Vent Boilers

Vaillant’s range of reliable high quality regular open vent boilers delivers for all house types with higher hot water demands from a single bathroom home through to five-bedroom multi-bathroom mansions. Our open vent range covers 12kW to 35kW and they work perfectly with our range of Vaillant cylinders.

ecoTEC plus 412, 415, 418, 424, 430 and 435

ecoTEC plus open vent boiler range

  • Rear flue option
  • Compact dimensions
  • Large backlit plain text display
  • Removable side panels
  • 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

ecoFIT pure open vent boiler

412, 415, 418, 425, 430 and 435 outputs

  • Compact, cupboard fit solution
  • 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)