Furnace Maintenance: Ventor motor is showing its age and parting, there was no new signs of moisture during testing, ive documented and we will continue to monitor with furure maintenances. Flushed the condensate P-trap and drain lines to maintain clear, efficient flow. Humidifier is operating as should, advised homeowner to monitor the humidity in home to see if there is a difference this winter. Checked pressure switch tubing to ensure reliable performance. Cleaned and polished the flame sensor for optimal ignition. Ran full diagnostics to confirm the system is running smoothly and efficiently. Walter