1ST MAINTENANCE CHECK-UP PER SERVICE AGREEMENT FOR 9 YEAR HEATING UNIT. CHECK MANIFOLD GAS PRESSURE AND FOR PROPER VENTING. CLEAN AND CHECK BURNERS AND BURNER OPERATION. CHECK THERMOSTAT, AIR FILTER, AIRFLOW, HEAT EXCHANGER, HIGH LIMIT CONTROL, FAN CONTROL, HEAT EXCHANGER, AND ALL ELECTRICAL CONNECTIONS. LUBRICATE ALL NECESSARY MOVING PARTS AND ADJUST BLOWER COMPONENTS. EVERYTHING IS WORKING GOOD.