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