MAINTENANCE CHECK-UP FOR 21 YR A/C UNIT. INSTALLED 3.5 AC FURNACE AND COIL. 12 YR, EARNED SERVICE AGREEMENT. CHECK THERMOSTAT, AIRFLOW, AIR FILTER, AND ALL ELECTRICAL CONNECTIONS. MADE SURE EQUIPMENT WAS INSTALLED CORRECTLY AND WORK AREA WAS CLEAN WHEN FINISH. CHECK ENERGY CONSUMPTION. EVERYTHING IS WORKING GOOD.