The loud AC issue, caused primarily from the high fan speed required for the unit to operate efficiently, is a problem that's not unique to PC. We have a Jayco Melbourne and even on the low setting, our AC is loud enough to make casual conversation a challenge. I was thrilled recently to read about Coleman's new Mach 8 AC unit, which is engineered with two separate motors. Not only is the unit much more quiet, but it's 15 lb lighter than their other units. As I understand it, Winnebago and a few other manufacturers are starting to install them. I would think this would be something PC would have interest in incorporating into future models. It rates high on my wish-list for our next RV.