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Introducing the Vaillant ecoFIT pure 618 is an 18kW system boiler with a BTU output of 54,000. Furthermore, the ecoFIT pure platform offers a compact solution, and for the first time in the Vaillant portfolio, a rear flue option for convenient cupboard fit installs.

Features & Benefits

  • Clear LED display - offers visibility in dimly lit areas for easier installation and use
  • Easy installation and maintenance - accessible layout that allows all components to be replaced from the boiler front
  • Recognisable Vaillant fault codes - making it easy to diagnose faults
  • High-specification aluminium heat exchanger- designed to last longer, maintain easily, and reduce energy bills
  • High-quality components - offering peace of mind for the lifetime of the product
  • Industry leading flue lengths - works with flue lengths of up to 10m
  • 4-sided cooling and water agitation of the heat exchanger
  • Compatible with Vaillant's intelligent range of controls
  • 2-year warranty, or 7 years when registered by an Advanced installer


Choosing the most suitable sort of Boiler is an important decision. When you determine that Gas System Boilers give the correct answer, then the Vaillant ecoFIT pure 618 System Boiler Natural Gas ErP - 0010020397 is certainly worth adding to the shortlist.

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Great customer service from the Greenford branch on two separate occasions this month. Courteous and polite and no quibbles. Well done.

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Excellent service, very competitive prices for top quality supplies !!
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Always a good purchasing experience and excellent customer service.

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