Main level not cooling - 20 year old Lennox gas furnace & AC System not cooling due to low on refrigerant and compressor is overheating then tripping the breaker at the main outdoor disconnect/panel. The system is low on R-22 refrigerant due to multiple leaks in the evaporator coil. The evaporator coil is rusted out. This is a Lennox C33 evaporator coil that is known for rusting and leaking. R-22 Refrigerant went through a Government Mandated Phase Out and is no longer available. Refrigerant related components such as coils and compressors were part of this phase out and are no longer available either. Also the blower motor and wheel are dirty, the heat exchanger is comprised with rust and small cracks, and the blower motor is over amping. All issues with this system reeks the back to its age, 20 years old. Due to the refrigerant type, age, and repairs not available, I recommended updating this equipment. The homeowner agreed and I scheduled an install supervisor appointment with dis