Preventative maintenence inspection on Trane high efficiency furnace. Trane Clean Effects filter cleaning. Clean flame sensor and check ignitor. Visual inspection of burners. Flush condensation trap and drain lines. Run test unit in heating mode. Temperature rise is within specs. Blower and inducer motors tested good. Pvc flue vents in good condition and no sign of leaks. 0PPM CO detected during testing. Furnace is operating properly, efficiently and ready for Winter.