We use our coach more in the summer, but when we are home for a few weeks my coach is parked on its own driveway right next to my house. So I run a heavy duty cord and I place a ocillating fan inside the coach. I also open the two vents in the bathroom area and one slide window on the side facing the house. I have had my coach now for seven years and it seems to work for us. I also keep the refrigerator working all the time. But like I said we use our coach at least six months out of the year off and on, winter or summer.
We are at Palm Springs, Ca. right now and it has been great weather. But we will be leaving in about another week and we will start working our way up the coach towards Washington. Hit all the 1000trails sites that are right next to the beaches. Makes for a nice cool summer.