We had 88 deg F. one day last week and the rear AC had no problem bringing the temp. down to 75 deg. with the chill grill open and the upstairs closed up.
We are boondocking right now and have to run the generator for the AC, the rear AC works fine but the 20 Amp breaker for the front AC on the generator keeps tripping after a minute or two, so that's a bummer.
2013 RAM 3500 Dually Longhorn
2014 Trilogy 3650RL, W/D, Onan 5500, 8000# Axles, IS, 960 Watt Solar, 6x6 Volt Battery Bank, Freedom SW 3012 Inv/Charger