PERFORM SERVICE CHECK-UP FOR 8YR HEATING SYSTEM. PURCHASED NEW SERVICE AGREEMENT. CHECK HUMIDIFIER, ALL ELECTRICAL CONNECTIONS, ENERGY CONSUMPTION, AIRFLOW, THERMOSTAT, AIR FILTER, FAN CONTROL, HIGH LIMIT CONTROL, AND HEAT EXCHANGER. CHECK MANIFOLD GAS PRESSURE AND FOR PROPER VENTING. CHECK BURNERS AND BURNER OPERATION. LUBRICATE ALL NECESSARY MOVING PARTS, AND ADJUST BLOWER COMPONENTS.