Preventative maintenence inspection on two Goodman high efficiency furnaces. Both 20x25x1 air filters are new today. Clean flame sensors and check ignitors. Visual inspection of burners. Flush condensation trap and drain lines. Basement system humidifier is operational. Pad in good condition and damper opened. Test run systems in heating mode. Both are within specifications for temperature rise. Blower and inducer motors are operating properly. Pvc flue vents in good condition and no sign of leaks. 0PPM CO detected during testing. Systems are operating properly, efficiently and ready for Winter.