CLEAN AND CHECK HT. CHECK THERMOSTAT, CHECK AIR FILTER, CHECK HEAT EXCHANGER, CHECK HUMIDIFIER, CHECK ALL ELECTRICAL CONNECTIONS, CHECK BURNERS AND BURNER OPERATION. CHECK HIGH LIMIT CONTROL, CHECK GAS PRESSURE AND FOR PROPER VENTING. ADJUST BLOWER COMPONENTS, LUBRICATE ALL NECESSARY MOVING PARTS. EVERYTHING IS RUNNING GREAT. RENEWED SERVICE AGREEMENT.