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