I have a 2012 American Tradition 42 foot. Three A/C units, a front to back slide on the driver side and two slides on the passenger side. When the slides are in, 8 of the air conditioner vents and intakes are covered by the slides. Therefore, if my theory is correct, in addition, the engine is putting out quite a bit of heat, which comes up through the floor in the rear. This time of year, all three A/Cs can't keep the inside temperature below 85 inside. Not appealing. My theory is that the vents in the living room that are covered by the slides are doing absolutely no good. The cold air from the vents just sits up there and never makes it to the cabin. Plus the engine heat is not helping.
Any tricks of the trade that anyone is aware of? Closing the vents in the rear bath and the ones that are covered? Additional insulation between the coach and the engine? Anything?