Steel solid fuel boilers with mechanized loading fuel intended for heating domestic, industrial and other premises, which is equipped with central heating system for the preparation and filing of heat for technological needs using as fuel wood, wood waste, sawdust and peat briquettes , lump peat and coal (seeds, nut), pellet fuels, wood chips, sawdust futyrovanoyi The new design improves the furnace fuel supply mechanism, which ensures stable operation of the fuel poor.