We noticed a distinct thermocline in our camper in the summer. It would be comfortable as long as you are sitting down, but when you stand up, you would get hot. We bought a small, quiet, inexpensive 110V clip-on fan at Walmart and clip it on the ceiling towel rack and point it upward. This efficiently distributes air throughout the camper, and, as long as we're not dry camping, is the perfect solution for us. Ours is white, which blends in well with the décor.