like more than 2 horse trailers, our horse trailer has a small sleeper compartment in the front that is intended just to change clothes in, and i’m not a horse show type of guy however I use our trailer for riding clinics as well as camping with our horse, from time to time. The only issue I have is that the sleeper compartment gets unquestionably hot! More expensive horse trailers have nice sleepers with toilets as well as a/c. There is no room to put a toilet in our sleeper however I guess I can install an a/c at least. I started researching the matter as well as it looked prefer I would have to split a huge hole in our trailer; But then all of us found something called a ductless mini-split system. The ductless mini-split system only requires that I drill a small hole in the trailer as well as not a huge 2-foot by 2-foot hole. The mini split system compressor component would rest on the tongue of the trailer then there would be a hose that runs inside of the trailer as well as attachs to the air dispenser, but of course, I would have to bolt everything down because these units are not intended to be on a horse trailer that bounces all over the road. That should not take too much work though. The a/c would not work without some source of power either however there is almost always some site to plug the trailers in at the riding clinics or the campgrounds. I actually suppose a ductless mini-split is exactly what I need to keep our horse trailer cool as well as comfortable for me.