SECOND MAINTENANCE TUNE-UP PER SERVICE AGREEMENT FOR 5 YR HT UNIT. RENEWED SERVICE AGREEMENT. CHECK THERMOSTAT, AIRFLOW, AIR FILTER, HEAT EXCHANGER, HIGH LIMIT CONTROL, FAN CONTROL, ENERGY CONSUMPTION, AND ALL ELECTRICAL CONNECTIONS. CLEAN AND CHECK BURNERS AND BURNER OPERATION. LUBRICATE ALL NECESSARY MOVING PARTS. AND ADJUST BLOWER COMPONENTS. CHECK GAS PRESSURE AND FOR PROPER VENTING. EVERYTHING IS OPERATING GREAT.