Propane-powered boilers can deliver heat through hydronic baseboard systems, in-floor hydronic systems, or even forced-air systems where the hot water from the boiler (instead of a furnace) acts as the heat source. Additional end-use options for boilers include separate heating zones in spaces like your garage. By treating these additional applications individually, you (and your builder or remodeler) can use them as you see fit, conserving energy while still providing added value.