Preventative maintenence inspection on Trane high efficiency gas furnace. Trane Clean Effects filter cleaning. Clean flame sensor and check ignitor. Visual inspection of burners. Flush condensation trap and drain lines. Humidifier pad in good condition. Dampermopened and tested during heating test. Test ran system in heating mode from thermostat. Temperature rise is within specs. Blower and inducer motors tested good. 0PPM CO detected during testing. Furnace is operating properly, efficiently and ready for Winter. Changed UV bulb replacement timer for 12 calendar months based on manufacturer specifications. When replacing the bulb next, the timer in the thermostat will need manually reset to get on the right timer.