Upon arrival found upstairs unit off. Turned system on and began to look at system. Checked inside unit and found everything operational. I did noticed that the 20x25x4 filter needs to be changed out. Checked outside unit and found everything operational. Checked amp draws and capacitor and those checked out good. I did find that system is 1-3lbs low on Freon and that the contactor was pitted. Recommended leak search. Homeowner wants to add Freon and replace contactor. Will need to reschedule.