2004 Trane Checked system and found several issues. System is R22. Refrigerant pressures are low however system is not freezing up. Capacitor on outdoor unit is in need of replacement as well as the capacitor for the blower motor. Evaporator coil is heavily rusted. Thermostat is still good. Checked heat and AC. Due to age of system, R22, efficiency and cost of potential repairs replacement of system is recommended. Customer does not to take action at this time. Gave estimates for leak search, and replacement of capacitors. Owner has to discuss options with his son.