Arrived in Smithville for AC Maintenance, Upon my arrival I spoke with the customer about their concerns with the system leaking water. Performing my diagnostics I found that the water removal system was not backed up. I checked the system primary drain pan and found that the condensation is building up in the opposite side of the drain port. The systems emergency drain pan is no longer sealed tight and is allowing the condensation to leak from underneath. The condensation is entering the emergency drain pan due to the system being extremely rusted on the bottom side and the system is now starting to come apart in the center between the coil and blower housing. Given the systems are my recommendation is to have the unit replaced and a new emergency drain pan installed. Spoke with the customer about my concerns and they would like a consultation set up.