The Froling FHG-S uses the same down draft technology as the FHG-L except with simpler controls at a mid-range price. Speed-regulated induced draft fan for output control and full operating safety. Up to 92% efficiency. Boiler starts with ease with its powerful fan and starting port.

The S-Tronic controller controls the induced fan. Flue gas and boiler temperature monitoring ensures efficient combustion.The Froling FHG-S boiler is covered by a 20-year limited warranty.