evolve S

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The evolve S combines a high specification with efficiency and comfort.

We’ve taken everything we have ever learned about design, performance and servicing and combined all that knowledge into one superior, cutting-edge boiler range. Our feature rich, state-of-the-art evolve S boilers will enhance the lives of homeowners and engineers alike by providing warmth, comfort, efficiency and long-term performance, coupled with ease of installation. It all adds up to our best boiler range to date.


  • Fully compliant with the Energy-related Products Directive – 94% space heating efficiency. Further efficiency can be achieved when installed with a weather compensation sensor or OpenTherm control.
  • 10 year warranty as standard
  • Four output options – 18 to 35kW
  • Compact dimensions enable the boiler to be sited almost anywhere in the home, including within a kitchen cupboard (18S & 24S models only)
  • Natural gas or LPG out of the box
  • Features an excess carbon monoxide monitor. In the unlikely event of excess CO being detected the evolve will shut down and not run until the issue has been resolved
  • Liquid crystal display user interface with full text menu system, enabling both the installer and end user to quickly navigate through evolve’s parameters and settings
  • evolve C combi boiler also available