Upon arrival spoke with customer and she explained no issues. We started with he stat and went to the unit. Filter and coil clean. Wires all tight. Drain is clear. Indoor unit is working as it should. Spoke with customer about allergies and the help a uv light could do for her home. Went outside, coil is clean. Wires all tight. All electrical checked out within pecs. Had system in heat due to the indoor and outdoor temps. Made sure pressures and all components working within manufacturing specifications. Jumped system into ac mode and let system run awhile. System is working well at this time. Went over some options with the customer. Customer approved uv light so wired it all up and showed customer it is working. Explained it will help clean the unit and the air going threw and will help the home! System is working well at this time.