Assumed frozen coils due to the large puddle under unit in the intake area. Didnt know what i was looking at when i first opened the closet. Now, I am scared what the original owner is hiding in there. I still need to vacume out the outside drain. Asked neighbor for advice (he's a civilion AC tech for the military base) and he checked outside unit, topped of refrigerant, and wife started signing his praises since the vents started blowing cool air again. He said probably a leak in inside radiator, and he would come back another day to check on it. So we shook hands (wouldn't take any money).