1ST CLEAN AND CHECK-UP UNDER SERVICE AGREEMENT FOR 8YR HEATING SYSTEM. CHECK HUMIDIFIER, ENERGY CONSUMPTION, AIRFLOW, GAS PRESSURE, THERMOSTAT, AIR FILTER, FAN CONTROL, HEAT EXCHANGER, HIGH LIMIT CONTROL, AND ALL ELECTRICAL CONNECTIONS. LUBRICATE ALL NECCESSURY MOVING PARTS, AND ADJUST BLOWER COMPONENTS. CLEAN AND CHECK BURNERS AND BURNER OPERATION.