As much as possible, avoid cooking inside your RV. Cook outside on a grill or over a campfire, or eat cold foods such as sandwiches, wraps, and salads.
Air Conditioners: The most effective way to cool down a camper is with one or more air conditioners. You’ll just need to make sure that your RV’s electrical system is capable of handling any air conditioners you add.
Evaporative Coolers: An Alternative to AC: You can also get RV window coverings that go on the outside of RV windows and block up to 94% of the light coming in yet still allow you to see out, much like a window screen.