MAINTENANCE CHECK-UP FOR 4 YR HEATING UNIT. NEW SERVICE AGREEMENT. CHECK MANIFOLD GAS PRESSURE AND FOR PROPER VENTING. CHECK THERMOSTAT, AIR FILTER, AIRFLOW, HEAT EXCHANGER, FAN CONTROL, HIGH LIMIT CONTROL, HEAT EXCHANGER, ENERGY CONSUMPTION, AND ALL ELECTRICAL CONNECTIONS. CLEAN AND CHECK BURNERS AND BURNER OPERATION. LUBRICATE ALL NECESSARY MOVING PARTS AND ADJUST BLOWER COMPONENTS. EVERYTHING IS RUNNING GREAT.