| http://www.w3.org/ns/prov#value | - By: LsFarm On: Sun Dec 02, 2007 11:12 am My understanding that the correct semantics is that a pressurized vessel that heats water or water to steam is a boiler, that an unpressurized or presurizable unit is a 'water furnace'.But the common nomenclature is that a furnace heats AIR and a boiler heats WATER... anything more complicated than that is ''pickin' the fly-sh*t out of the pepper [old sayi
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