We installed a 12v air conditioner on the rear door of our DIY Ram Promaster camper van. It was much more affordable that the 12v rooftop versions on the market (although this could be installed in the roof). We didn’t want to reconfigure our rooftop solar panels and deck, therefore, this seemed the best option. It blows very cool and cycles between 50-800w. We don’t have a huge battery bank (400ah), but since it’s 12v we can run it all night.

Not a how-to video. I pieced together all the clips I took during our installation to share that it’s possible to have ac in a van for $700.

We purchased this unit off Amazon even with no reviews are are so glad we did:

RV65F Universal 12V DC Electric...
https://www.amazon.com/dp/B0B391ZXZ8?...