Performed routine maintenance inspection on 3 systems. Customer has two 23 y/o Goodman systems that operate for main and basement levels and 9 y/o Trane system that operates for upper level. Checked amp draws. Cleaned flame sensors. Cleared pressure switch tubings. Drain lines are clear. Condensate pump for basement is bad. Run capacitor for basement system is bad. Blower wheel cleaning needed for main and upper levels. Noticed buildup on bad ignitor for main level. Both main and basement levels have rusted evaporator coils. Pressure levels were low for main and basement levels indicating loss of refrigerant. Both systems are R22 based. Main level condenser has bad contactor. Suction line insulation for systems have deteriorated. Pressure levels for upper level are good. Coils are fair. Informed customer of all findings. Systems are currently operable.