I have a 20 yr old unit. Sits in room off back of kitchen. Noticed water on the floor. The water is condensing & dripping down off the copper tube that runs under the house to the outside unit. There is a red drain plug there so sure enough I opened it & water came out. Replaced plug but it still dripping. What is the bad news?
It is as long as you do not create a problem unclogging the drain, or find out that the A-Coil is iced over, when you take the cover off of the ductwork where the A-Coil is sitting. You are welcome to post pic's of the furnace, if wanting to know where to look.