Upon arrival unit was turned off. Customer stated the unit was producing a lot of water from the air handler. Inspected evap coil and the air filter. Evap coil was clean but air filter was dirty. Replaced the air filter with a customer supplied one. Turned unit on and both indoor and outdoor units turned on. Checked the capacitor and it was good. Checked refrigerant levels and found the system was low on refrigerant. After getting customer authorization we added 1 lb 13 oz R22 to the system bringing the subcooling from 1 up to 10 which is within manufacturer’s specifications. Unit is working properly. Took pictures and measurements for a replacement quote.