We are going to use a window unit we bought from Target last year on clearance for $50.
It will be put in our back sliding window of our 'new to us' 16 ft. Scamp
. I don't like using half of my window but we don't want to cut holes either.
We did this in our 13 ft. Casita
and it worked well.
Hubby made a collar out of lightweight wood-it fit around the a/c and held the unit in . When we are ready to hit the road we just remove the a/c.
These 5,000 btu units are lightweight and cool nicely.
Will try to post pictures of new install when we get started on it.