I've switched back and forth and didn't notice much difference but again I think I probably should try it for longer. I've had it on AC for the past two or three weeks since we arrived at a park. I guess I'll put it on propane for now although in the past it would get cooler on ac then propane. It would actually get too cold on ac, up to a couple days ago, and I actually had to adjust the temperature up from when it was running on propane after we finished boondocking and arrived at the park for her assignment.
I'd still like more info on how to unplug heater element leads from lower circuit board and plug them directly into 120V AC outlet. I see how I could unplug them but I'm not sure about how to directly plug them into an outlet.
