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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
  • Hand-built in our award-winning Derbyshire manufacturing plant
  • Quiet Mark approved, meaning it’s one of the quietest products in its category*
  • Guarantee up to 10 years available when you book a Vaillant Advance installer**
Find your local Vaillant Advance Installer


If space is at a premium in your home, the cupboard-size ecoFIT pure system boiler is the choice for you. It’s designed to be flexible, with a rear flue option available to give you more choice where you put it.

*Excludes 35kW model

**2 years out the box guarantee. 10 year free extended Advance guarantee available when fitted with an Advance boiler protection kit.



ecoFIT pure system boiler range12kW15kW18kW25kW30kW
ERP Efficiency9494949494
ErP rating for central heatingAAAAA
ErP rating for hot waterAAAAA
Modulation 1: X1.23 1.53 1.84 2.55 3.06
ErP decibel rating (sound power) dB4548495154
PCDB seasonal efficiency %89.889.989.789.789.9
Boiler dimension (H x W x D mm)700 x 390 x 295

Related Products

Related Products

Vaillant vSMART™ app based heating control

  • Smart home and mobile app compatible
  • Self learning smart thermostat
  • Weather compensation to reduce energy bills

Vaillant VRT 350 heating control

  • Easy to use with flexible functions
  • Choose between wired and wireless controls
  • Reduce your energy bills by using the minimum energy required

Domestic boiler hot water cylinders

  • Designed perfectly to work with Vaillant System & Regular boilers
  • Slim line, pre plumbed and standard cylinders in the range
  • 25 year guarantee on the cylinder shell, for total peace of mind


How to get

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Find your local Vaillant Advance Installer

Advance is Vaillant’s installer loyalty scheme. By choosing a Vaillant Advance Partner, you’re choosing our network of fully trained, independent installers who can offer you exclusive extended guarantees, as well as a free no obligation quote to ensure your Vaillant boiler is the perfect fit for you and your home.