1ST MAINTENANCE TUNE-UP PER SERVICE AGREEMENT FOR 4 YEAR HEATING SYSTEM. ALGAE TABS. CHECK MANIFOLD GAS PRESSURE AND FOR PROPER VENTING. LUBRICATE ALL NECESSARY MOVING PARTS AND ADJUST BLOWER COMPONENTS. CLEAN AND CHECK BURNERS AND BURNERS OPERATION. CLEAN AND CHECK BURNERS AND BURNER OPERATION. CHECK THERMOSTAT, AIRFLOW, AIR FILTER, HEAT EXCHANGER, HIGH LIMIT CONTROL, FAN CONTROL, ENERGY CONSUMPTION, AND ALL ELECTRICAL CONNECTIONS. EVERYTHING IS RUNNING GREAT.