I've decided to add an A/C to my 2004 Fleetwood Redwood pup... Yes it A/C ready with the supports installed from the factory, and the separate 20 amp circuit. After doing a lot of research, I looking for suggestions on different units. I'm looking at the Dometic Duo-Therm Brisk II 13,500 btu Air Conditioner through AdventureRV.net $525 delivered , and the Advent AC135 13500 BTU Non-Ducted Complete Unit from My 12volt store.com $520 delivered. Both of these units are for a complete unit, both top and bottom pieces and the gasket. I would need to supply the power cord. I'll be doing the install myself. I need to cut the opening, (the 4 points are pre-marked in my ceiling) build a support feature to put into the opening to keep the roof from crushing when the A/C is bolted down. Run a suitable wire to the the outlet for power. I've done a lot of reading / research and I'm getting ready to pull the trigger on the purchase. I just want to make sure the unit I get will be trouble free and will last. I welcome any and all comments / suggestions.