Removed the old line set outside at the wall. Cut and removed the line set inside as close to the wall as we could. Ran the new copper line set from the outside of the home up into the attic. Insulated the line set and attached the low voltage wire to the new line set. Brazed each point of the line set to the indoor and outdoor units. Pressure tested the joints and pulled a deep vacuum. Released the refrigerant and charged the system to factory specs. Cleared and treated drain line with hot water. The system is working at the completion of the service.