Costco has a pretty small 6000 btu AC now
I bought one and am going to see if I can mod it to work just venting from the back for a in-cabinet side wall installation. It is very very tiny and $139. I will let you know how it goes.
Forum Discussion
Just an update on this little AC unit thread from last year. I built a shroud out of aluminum that directs the outside air into the side vents and blows the exhaust air outside. This allows the AC unit to be fully mounted inside on the side of the camper. On the hottest day we have had so far (90 degrees) it easily cooled the camper down to 67 degrees. I lined the outside of the aluminum shroud with 1 inch of polyisocyanurate rigid foam insulation. Eventually I will make a nice finished wood cabinet on the inside to cover the housing and just leave the front of the AC exposed.
