Came out to call for a system not cooling properly. Tenant stated that in the heat of the day, the unit won’t keep set temperature. I checked the system over and found it dirty and in rough shape. System is a 2.5 ton from 2001 and could use replacement. Blower motor was replaced recently, but wires weren’t connected properly. Washed condenser coil thoroughly and rechecked operation. System is cooling the best it can. Attic has barely any insulation and the attic ventilation is minimal. AC is cooling the best it can. Recommend replacement to a 3 ton unit and more insulation in attic.