Performed AC maintenance on a Carrier System. Cooling temperature split is 23 degrees. Condensate line is clear and installed at a correct angle. Attic unit is equipped with a drain pan snd overflow switch for added protection. Duct runs are sealed and mounted for good airflow. Indoor blower motor is clean and amping in range. Outdoor unit was chemically cleaned. Compressor bay was cleaned today. Compressor and fan amp draws are in range at this time. Customer signed up for a twice a year maintenance plan in order to keep her system working at optimum level. System was cycled before leaving.