When we moved back to Texas in 1997, we brought our 1996 Jayco Designer 3030RKSS 5th wheel that we had bought in Ohio. It only had one 13.5K BTU Coleman A/C. It was absolutely MISERABLE in Southeast Texas during the summer. Once the outside temperature got above 85 degF or so, the temperature inside the 5th wheel would rise degree for degree with the temperature outside the 5th wheel. We swapped that thing for a 2000 Jayco Designer XL 3610RLTS with TWO A/Cs. That was the one and only 5th wheel I've ever owned with only one A/C. Never again!!
Rusty