We had a heavy rain two nights back so I checked it good after work yesterday, no issues that I could find inside.
It got down to 37 outside the first night we camped and furnace was off and on all night, kept 70 pretty good with inside garage open where kids sleeping. That was one of my bigger worries actually was if the furnace would keep up without running all the time.
Great thing was we only got one TV in the living room, but kids can lay in both beds in the garage and see the TV, and speakers in garage so it really worked out better than expected.
The reclining couch is about 10 times more comfortable than most of the furntiure in other models we looked at. Its real furniture in my opinion, very impressed. It also came with two tables...one for living room and one for the back room which was nice as I thought it would only have one table.
When I ordered it I didnt add the power tongue jack...but when I picked it up there it was....glad they had that, not sure if that was a mandatory option for 16.