I saw these & it looks like a very good idea for a teardrop, but it still needs some work to get to the market & be used for a while before I'd consider buying it & putting it in a build (just my $.02 worth on new stuff & $400).
We use a small 5000 BUT window unit & it keeps up with the heat no matter how warm it is outside. I chose to put it in when the build was in progress, it's in the headboard area. It's sort of a PITA to incorporate into a built, since it takes up space & adds weight, but where we live it's necessary with the heat we have for much of the year. Basically, since it's too big for the wall thickness, I had to figure out a way to make it slide in & out when running & traveling. When we stop, it needs to slide out or you can bump your head if not careful. It sticks into the build about 6".

The bottom panel slopes about 1/4" down-hill to make sure water stays out from rain or drips. The aluminum panels were glued in place with epoxy or contact cement, depending on where they were loacted.

The panel has to be removed for the AC in the running position

"Out" position for running

Spring-loaded lock pins hold it in place for running & traveling & are set into the side panels & drilled into the AC body. The face-frame is attached to the ac unit & has a weatherstrip on the back side so it forms an air-tight, water-tight & bug proof seal when it's running. Any water or condensation drips out onto the tongue box & falls outside the teardrop.
