Performed HomeCare routine maintenance inspection on 20 y/o Trane system that operates for whole house. Furnace located in garage. Checked amp draws. Cleaned flame sensor. Condensate drain pump operational. Water rinsed mesh 20x25x1 filter. No water protection present. Blower wheel is dirty. Buildup on declining inducer motor. Evaporator coil is rusted. Condenser fan motor is overheating. Run capacitor for condenser fan motor is bad. System is R22 based. Informed customer of all findings, Based on our findings today, it might be time to think about getting a brand new system.