Preventative maintenence inspection on Trane S9V2 furnace running in great condition. 20x25x4 air filter is new today. Tested operation of I-Wave air cleaner. Clean flame sensor and check ignitor. Visual inspection of burners. Flush condensation trap and drain lines. Humidifier pad is new today. Humidistat set to 35%. Test run furnace in heating mode. Temperature rise is within specs. Blower and inducer motors tested good. 3" pvc flue in good condition and no sign of leaks. 0PPM CO detected during testing. Tested operation of humidifier during heating test. All systems are operating properly, efficiently and ready for Winter.