2 system tune up in Auburn. Changed filters. Checked mechanical and electrical components. Found both blower wheels to be very dirty. Recommend pull and clean service. Found no form of water safety for either unit, code requires that there be at least one. Recommend pan float switch for both units. Found both blower motor capacitors to be weak and causing strain on the blower motor, recommend replacement(7.5 both). Temperature split for upstairs system is only 10. Found both evaporator coils to be very rusty and likely to be leaking. Found burnt and pitted contactor for downstairs and upstairs condenser, recommend replacement. Found weak dual capacitor on downstairs condenser, recommend replacement(35/5). Also found weak capacitor on upstairs condenser, recommend replacement(45/5). Recommend cleaning both condenser coils. Found upstairs unit to be low on R22. Due to the age and cost of repairing these systems I recommend upgrading to a newer and more efficient system at this time. Upst