Here’s a project I did last summer. We placed an air conditioner in the back of the bus. This wasn’t so much to bring a ton of cool air into the bus (but is nice in the hot midwest), but to provide some additional ventilation in the rear of the bus.

And you can too!

The traditional air conditioners that install into RV’s are about 5 times more expensive. I read all the instructions on this box (an $89 unit) and saw nothing that hindered the usability of it in the bus. Amp draw was the most important factor to consider. I do not use it off my modest batteries (only when I have the bus plugged in). However, I use the fan quite often to keep circulation in the back of the bus. It also serves as a nice quiet noise at night.