Keeping cool:
- Shade. Awning, slide awnings.
- Remove covers and check for obstruction in ac vents (sawdust, peeling duct tape, faulty installation)
- Keep the door closed: limit traffic, pets, kids in and out.
- Find and fill all those air leaks: corners of the slide, entries for pipes, vents, wiring, esp inside cabinets; old seals around outside storage doors.
- Foil window insulation (Reflectix): cut to fit, Velcro or may stay in place itself. In August, made an 8-10 degree difference in mine. While the trailer’s in storage, limits sun fading the upholstery. Blocks the view, though, and is bulky to carry around.
- window film (Gila, at HD, Lowes, etc.): Tedious to put on, needs 2 people, but once there needs no upkeep. adds some privacy. Helped ours enough that we no longer bother with the Reflectix except in long term storage.
- Small fan or two, esp for the bedroom and that favorite chair. With a breeze, and the AC removing humidity, 88 can feel pretty good when it’s 108 outside.