mtofell1 wrote:
All electric heaters are the same amount of heat for the same money. It just depends how you want the heat "delivered". I'm a big fan of oil-filled radiant since they are silent and generally the safest portable electric. But, they do take a long time to warm up (and cool off) so I keep a radiant electric on hand for quicker usage.
This is a popular misconception. Heat pumps deliver more BTU's of heat than ANY type of electrical resistance heating. If one of the interior portable heat pump units is used inside the RV, you also do not have to worry about the outside temperature being too low, as you would with your exterior roof-top heat pump.