[TSoul]

We took our new crescendo out in January. It was an unusally warm weekend here in PA and the temp hit 55. But it was cold at night. We set the furnace low and actually forgot about the ceramic heater. We all were comfortable everwhere in the coach. My 16 year old son was sleeping on the pull out bed in the front and said he was comfortable and warm all night.
At the same time I should mention that we don't expect the coach to be as warm as the house so we do use extra blankets and sweatshirts and flannels and such. None of us noticed any cold spots however.
I would go with a ceramic heater in the front or maybe another sort of propane heater that you can find at camping world. Some of them will require extra ventalation so you have to crack a vent or window. But those type of heaters do not use electric. Good luck and Happy Camping.