How do you change from natural gas to propane on a dearborn space heater?

To change a Dearborn space heater from natural gas to propane, first ensure the heater is turned off and disconnected from the gas supply. Then, locate the conversion kit that typically includes a propane regulator, orifice, and any necessary fittings. Remove the natural gas orifice and replace it with the propane orifice from the kit, and adjust the regulator as specified in the manufacturer's instructions. Finally, double-check all connections for leaks before re-connecting the heater to the propane supply and testing it.