The air coming through the AC ducts should be dried out during the cooling process. Unless you have warm, moist air from outside blowing over the cooler duct, I can't see where you would be getting condensation. Are you sure the unit is not icing up and the drains are plugged? If your using up, get the refrigerant levels checked and see if they're not low.
2015 Legacy SR340 360RB
2014 Jeep Wrangler Unlimited Toad
Gigi, Poppy and Sadie Lady...On the road, but not full time!