FIRST MAINTENANCE TUNE-UP UNDER SERVICE AGREEMENT FOR 2YR HEATING UNIT. CHECK BURNERS AND BURNER OPERATION. CHECK HEAT EXCHANGER AND HIGH LIMIT CONTROL. CHECK THERMOSTAT, AIR FILTER, AIRFLOW, ENERGY CONSUMPTION, FAN CONTROL, HUMIDIFIER, AND ALL ELECTRICAL CONNECTIONS. LUBRICATE ALL NECESSARY MOVING PARTS AND ADJUST BLOWER COMPONENTS.