Customer has 24 y/o Trane heat pump system that operates for basement level. System has pitted contactor that has caused heat strip kit failure. Incorrect heater gauge wiring. Known R22 refrigerant leak. Rusted evaporator coil. Dirty blower wheel. Bad run capacitor. No water protection present. Informed customer of all findings. Based on our findings today, it might be time to think about getting a brand new system.