System number 3: condensate drain has stopped up and water has filled the air handler and secondary pan. Cleared drain line, cleaned as much water out of air handler as possible, and cleaned water out of secondary pan. all insulation needs to pulled out and replaced and unit needs a new float switch. Secondary pan will eventually fill up again because unit is sweating so badly until the insulation is replaced. Ducts are not bad at all. System one and two are functional, ducts are not bad at all. Homeowner asked me to leave attic access open.