Called in on a water leak and found this mess! After clearing a major blockage from the P-Trap, Shop-Vac out 20 gallons of sludge and water from the emergency pan. I found a rusted out main pan. 13 SEER Condenser with 10 SEER Coil. I will be changing the Coil on Monday and cleaning up the Piping and duct connections. Their electrician is supposed to check on the electrical issues.