Homeowner purchased a Homecare for two systems. Swapped out two filters 16x25x1. Both systems blower wheels were clean at this time. Flame sensors were cleaned. Poured water down both drain lines they are both clear at this time. Both systems supply and return duct work were below CFM ratings. Recommended work to be done on duct work to get both systems up to proper air flow designed for the house. Outside units pressures were fine at this time. Both AC units outside were both dirty. Recommended coil cleanings for both systems. Upstairs units capacitor was dead on herm side at the moment. Recommended to homeowner to replace the capacitor. Recommended flood protections to homeowner to bring the system up to standards. Homeowner said they would have to speak with their son but plan to proceed with the immediate recommendations.