Someone please direct me to a 5th wheel manufacturer that has a fully insulated coach, not just in the walls and the ceiling. Why not insulate the bottom and then insulate the floor separate from the utilities. I own a Bigfoot pickup camper and a Keystone 5th wheel.

When I bought the 5th wheel I looked at lots of different makes and just like this one, all had the same underbelly with no insulation in the hatches, so, yes you do need 60000 btu heat to basically heat the outdoors.