Envirogreen™ Slimline Combi

The Firebird Slimline Combi (combination) HVO ready, oil boiler, which is manufactured in Ireland is an instant domestic water heater and a central heating boiler combined. Water is heated directly via a thermal store when a tap is turned on, saving not only on cost, but also on the space required for a hot water storage tank. Providing instant access to hot water, this type of boiler is particularly suited to smaller households with one bathroom and shower/ensuite.


  • Excellent hot water performance – over 16 litres/min on 35kW model.
  • PCB controller using highly accurate thermistors.
  • Rapid re-heat after hot water draw-off.
  • Compact design – fits under standard kitchen worktop.
  • Hard wearing casings with high quality finish.
  • Patented heat exchanger design.
  • Twin circulating pump – no diverter valve required.
  • No flow switch – water flow is electronically detected.
  • Fully insulated and acoustically designed for ultra quiet operation.
  • Multi directional flue options.
  • High performance low NOx Elco burner.
  • Optional condensate pump and timer controllers.
  • Two models available in outputs 12kW to 26kW




Product Specification

Envirogreen ModelProduct CodeWeight kgErP RatingDimensions (mm)
HeatingHot WaterHWD
Envirogreen™ Slimline Combi 12-20kWECE020SLM165AB855520600
Envirogreen™ Slimline Combi 20-26kWECE026SLM168AB855520600