I have a 2010 Winnebago Sightseer when running the air conditioner the floor on the passenger side get wet but not all the time, I checked the drain on the bottom of the AC and it is draining I don't ...
I had a car that did that...the drain tube was sealed like a lip to keep dirt out...but the water could not get thru the lip fast enough..so it backed up...I cut the lip and just left tube open..water drained right out and no more problem.