Came to residence for prepaid MSC tune-ups on two ac systems, a '14 Lennox ac unit and a '20 Amana ac unit. Equipment functional upon arrival. Upon inspection of the larger Lennox outdoor condenser, I found all components are operating properly and all measurements are well within manufacturer specifications at this time. No foreseeable issues. I cleaned the condenser and disconnect. Upon inspection of the smaller Amana outdoor condenser, I found that the unit is also measuring well in all categories and all electrical and mechanical parts are functioning correctly. I also cleaned off this unit's disconnect and condenser. Moving inside, I checked the right-hand system's evaporative coil and blower wheel and found them to be clean and functioning well. All electrical measurements are good and everything is operating properly. The filter is in good shape and the temperature split is good, indicating proper refrigerant levels and good operation. Checking the left-hand system's compon