Arrived outdoor temperature was only 63° Indoor temperature was 68 Cycled unit to check operation - had to wrap outdoor unit to simulate an 80° day Found system is doing all it can to keep up as it is starting to lose refrigerant capacity highest pressure unit suction line achieved was 65 psi a vapor saturation of 36°, on the hottest days this pressure will dip causing unit to not be able to keep up with demand. As unit is r-22 system will have to be charged and an estimate done to replace equipment.