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

Vaillant System Boilers

System boilers, also known as sealed system boilers and have the heating and water systems built into the boiler itself. They are ideal for homes with more than one bathroom and give a constant supply of hot water.

ecoTEC exclusive with Green iQ system

The premium system boiler

  • 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 to 10 years available when you book a Vaillant Advance installer

ecoTEC plus system

The flexible system boiler for any home

  • High performance, control and efficiency
  • Precision heating to reduce your fuel bills
  • A wide range of heating control options, from our simple boiler timer right up to our vSMART™ smartphone app
  • 5-year guarantee as standard, with 7 to 10 years available when you book a Vaillant Advance installer

ecoFIT pure system

The cupboard-size system boiler for any home

  • High performance build, smart controls and efficiency
  • Compact enough to fit in a kitchen cupboard
  • A full range of heating control options, from our simple analogue timers to our vSMART™ smartphone app
  • Quiet Mark approved, meaning it’s one of the quietest products in its category
  • 2 years guarantee as standard, with 7 to 10 years available when you book a Vaillant Advance installer

ecoTEC plus 48 and 64kW

High output wall-hung boiler range

  • Compact design
  • Suitable for natural gas and LPG applications
  • High efficiency stainless steel heat exchanger
  • Full range of accessories available

ecoTEC 46kW & 65kW

ecoTEC high output boilers

  • Suitable for domestic and commercial projects
  • High quality stainless steel heat exchanger offers more resistance to oxidation and corrosion
  • All major components built-in for easy installation
  • Energy saving two-stage frost protection system and pressure sensor to monitor system pressure via diagnostics and a flow sensor
  • ErP A rated