FIRST CLEAN AND CHECK UNDER SERVICE AGREEMENT FOR 9YR HEATING UNIT. CHECK THERMOSTAT, AIR FILTER, AIRFLOW, HEAT EXCHANGER, HIGH LIMIT CONTROL, ENERGY CONSUMPTION, AND ALL ELECTRICAL CONNECTIONS. CHECK BURNERS AND BURNER OPERATION. CHECK GAS PRESSURE AND FOR PROPER VENTING. LUBRICATE ALL NECESSARY MOVING PARTS, AND ADJUST BLOWER COMPONENTS.