Envirogreen™ System

The Firebird HVO ready, System oil boiler which is manufactured in Ireland, is also referred to as a ”sealed system boiler”, provides central heating and direct hot water via a storage cylinder, which is usually housed in an airing cupboard. Unlike a regular boiler heating system, there is no requirement to have water tanks situated in the loft. System boilers are generally easier to install, as the heating and hot water system components form an integral part of the boiler itself.


  • Compact design – fits under standard kitchen worktop (outputs up to 35kW).
  • Low pressure switch protects boiler in the unlikely event of system water loss.
  • Hard wearing casings with premium quality finish.
  • Patented heat exchanger design.
  • Front service access.
  • PCB controller with anti cycling function (outputs up to 35kW).
  • Fully insulated and acoustically designed for ultra quiet operation.
  • Multi directional flue options.
  • High performance low NOx Elco burner.
  • Optional condensate pump.
  • Four models available in outputs from 12kW to 44kW.


Product Specification

Envirogreen ModelProduct CodeWeight kgErP RatingDimensions (mm)
Envirogreen™ System 12-20kWESE020DLX143A847442610
Envirogreen™ System 20-26kWESE026DLX146A847442610
Envirogreen™ System 26-35kWESE035DLX149A847442610
Envirogreen™ System 36-44kWESE044DLX235A1048660852