Performed air conditioner clean and tune. I checked the filter and blew out the drain. Performed a leak search on the system. I found the evaporator coil was leaking refrigerant. I cleaned out and tested the electrical components. Washed the condenser coil. Cycled the system and checked the refrigerant charge. The air conditioner is getting low on refrigerant. Dan will be out to verify the leak and give options to move forward. Unit is 13 years old, average life is 12-15 years.