I have a 5000 BTU window A/C that I bring along to the desert as an emergency spare.
I’ve tried it out, mounted in the dinette window, and it’s woefully inadequate.
I guess that’s why campers come with 9000 or more BTU A/Cs.
I think I you’re making this way too difficult and screwy. I think you could scrounge up a used roof A/C for cheap. A few months ago I scrapped an old camper that had one, I literally threw it away..
Those A/Cs often outlast the camper they’re bolted to.
Space is always at a premium, why give up a cabinet?
