;D Hello to all, My wife and I have RV'd about 10 years beginning with a 22 ft. 5th wheel with no slides and moving up to a 27 ft. Salem by Forest River with one slide. Just last June, we finally got a 2004 Ram 2500 diesel and a 31 ft. Legends by Pilgrim with three slides, nice lay out. We are retired and in our 70's with a house in Texas. After this very hot summer, we are concerned about adequate cooling in our new Legends which has one 15k A/C. Company claims that it is within specs, but once outside temp gets to 90 or higher, it will struggle to maintain a 10 degree differential. If anyone has successfully supplemented the factory air, we'd like to hear about it. We have 30 amp system so cannot add a unit without rewiring.