Performed cooling maintenance on new Bryant AC system 16x25x4 filter is good Drain clear Blower OK Line set insulation good Tore down and washed outdoor coil Checked refrigerant charge, running 5.3⁰ subcool, spec is 8⁰ Added a few ounces of R454b refrigerant to get 8⁰ subcool System is clean and running within factory specs at this time.