AC Maintenance completed on 7 yr split 5 ton Carrier attic heat pump; replaced 20 x 30 x 1 Merv 13 pleated filter with new one provided by homeowner; recommended MERV 8 to reduce restriction on airflow; ran to cool at 15 degree temperature split; 56 at bedroom supply; recommended Thompson’s Service Partner Plan to include filter, condenser cleaning, & drain-line clean out upon visits. Also recommended to install hard start kit for outdoor condenser to increase efficiency and life expectancy of heat pump.