Warmflow Agentis Internal Heat Only Boiler

I21 / I26 / I33 / I44

  • High-efficiency condensing internal range
  • Designed to fit into any kitchen or utility room
  • The latest Riello low NOx technology


Warmflow has an outstanding selection of high efficiency, internal and external oil-fired boilers – including the UK & Ireland’s only AAA-rated oil boiler – you can also save both installation time and money with their new Professional range of oil boilers which comes with over £250 worth of factory fitted accessories as standard including an Adey Magnacelan Pro 2, Teddington fire valve and Crosland oil filter and much more!

Additional information


Output 15-21kW, Height 865mm, Depth 602mm, Width 413mm


Output 21-27kW, Height 865mm, Depth 602mm, Width 413mm


Output 27-33kW, Height 865mm, Depth 602mm, Width 413mm


Output 33-44kW, Height 1155mm, Depth 872mm, Width 595mm