I found bad start assist kit, bad compressor run capacitor (dual), weak fan capacitor: 25% low. Also, condenser coil is very dirty. I replaced defective parts. Tested cooling operation and found system approximately 20 to 30% low on Freon! uses (R22)! Suction: 72 (43) suction line: 78. Metering device: TXV. Head pressure: 208. Subcooling: 0 to 2. Thermostat: 89. Customer plans to have a friend add Freon. Work suggested: recommend putting some repair costs toward replacement. Need to schedule project manager to price out new air conditioner. customer purchased maintenance plan today. Need to schedule first visit.