Hoping for some guidance. We live on the Florida gulf. In the summertime, we have a number of air conditioning vents dripping a fair amount of water (enough to soak a rag if placed underneath). One vent is beginning to show sign's of water damage on the surrounding drywall. Being this is Florida, we've no basement, all the ductwork runs through the attic. The main unit is in a closet in the laundry room. The problem isn't there in the winter time, where the temperatures here might be in the 70's as opposed to summertime 90's, and the humidity is a bit lower. Any help on what we should be looking for as the cause is greatly appreciated. Thanks much.

Whats up Y'all I was looking at Dry-Lock and other types of basement waterproofing paint and they all specifically said not to be used on horizontal surfaces. Why not? If the the water pressure from bellow is no greater then the hydrostatic pressure on the walls then why would painting the floor with this stuff be a no no. Hmmmm.... :)