My dad was over the other night and was grumping about how expensive his house was to heat this winter. He lives in a large old brick house that has a propane steam boiler for heat. When I was very small there was a bituminous underfeed stoker that fed a coal boiler but, the boiler just wore out (cracked) it was installed by my grandpa in the 30s so it had a good run. About 6 years ago before corn got expensive my dad put in a cornglow insert in a fireplace, well corn got evpensive now my dad is screwed he wants to find a stoker stove that can burn bituminous coal but they seem to not exist.
Does anyone have any ideas?