Completed furnace, maintenance and inspection. I tested components and amp draws. I checked airflow and temp splits. I cleaned flame sensor and wiped down furnace. I supplied a new box of electrostatic air filters. Humidifier was not operating properly when I arrived. I was able to unclog the solenoid valve, remove the water resistor, and turn down the water pressure to the humidifier so that way the humidifier operates properly. Furnace and humidifier are operating within manufacture specifications at departure.