Ac tune up in Dacula, Georgia. Performed tune up on 2 systems. Changed filters. Tested mechanical and electrical components. Found downstairs system low on r410a, evaporator coil needs to be changed out. Downstairs dual capacitor is weak (35/5 uf). Recommend replacement of downstairs evaporator coil and downstairs dual capacitor. Customer just wants to recharge main level system and replace capacitor for now. Recharged system to 10 degrees subcooling per manufacturer specifications with 1 lb r410a. Replaced main level dual capacitor. Systems are operating at this time.