1ST CHECK-UP UNDER SERVICE AGREEMENT FOR 6YR HEATING SYSTEM. CHECK GAS PRESSURE AND FOR PROPER VENTING. CHECK THERMOSTAT, AIR FILTER, HUMIDIFIER, HEAT EXCHANGER, HIGH LIMIT CONTROL, ENERGY CONSUMPTION, AND ALL ELECTRICAL CONNECTION. CLEAN AND CHECK BURNERS AND BURNER OPERATION. LUBRICATE ALL NECESSARY MOVING PARTS, AND ADJUST BLOWER COMPONENTS.