New RVer, does heater need both gas and electric?

Furnace uses LP. and needs 12 V DC to run the fan. , water pump, stove is LP., Reefer is either LP or 110v and sometimes also 12v DC.Your AC uses 110VAC Full hookup will supply 110V AC to wall receptacles etc.
to the AC items such as TV. Reefer AC If you look in the control panel in the unit fuses are 12V DC and breakers are 110V AC. The convertor charges the House (RV battery) which gives you the power to run the 12 volt items I hope this helps
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