MAINTENANCE TUNE-UP UNDER SERVICE AGREEMENT. INSTALL 3 TON AC/FURN/COIL. MADE SURE EQUIP WAS INSTALL PROPERLY AND WORK AREA WAS CLEAN WHEN FINISH. CHECK THERMOSTAT, AIRFLOW, AIR FILTER, FREON LEVELS, DRAINAGE, BURNERS, HEAT EXCHANGER, FAN CONTROL, GAS PRESSURE, VENTING, AND ALL ELECTRICAL CONNECTIONS. EVERYTHING IS RUNNING GOOD.