AC performance tune up times one system. Inspect blower, evaporator and ductwork. Found inside of furnace cabinet completely covered with sheetrock dust. Recommended to Elizabeth that she is breathing this and it needs to be cleaned. Also cleaned evaporator coil with solution in place. Old blower and pull blower wheel out to clean separately. Check thermostat for proper operations. Check outdoor unit. Refrigerant level good at this time. System is operating at manufacturer specs at this time.