I honestly would suggest you look into portable AC’s. They aren’t as heavy and cumbersome as you might think just from first sight and are as powerful as the stationary.
It’s nice because you don’t need to drill, cut out, modify or literally do anything with your RV, just place, plug it in and you’re good to go. I got my U-GO!
last summer and it works just perfectly. I clean the filters once in a while and that’s pretty much it.
I’ve never done it yet, but it’s super comfortable to carry from one vehicle to another, just plug it in and it’s ready to go. Might come in handy if you have a friend or a family member and want to share it.