1ST CLEAN AND CHECK UNDER SERVICE AGREEMENT FOR 2YR HEATING UNIT. CLEAN AND CHECK BURNERS AND BURNER OPERATION. CHECK THERMOSTAT, AIR FILTER, AIRFLOW, HUMIDIFIER, FAN CONTROL, HEAT EXCHANGER, HIGH LIMIT CONTROL, GAS PRESSURE, ENERGY CONSUMPTION, AND ALL ELECTRICAL CONNECTIONS. LUBRICATE ALL NECESSARY MOVING PARTS, AND ADJUST BLOWER COMPONENTS.