Completed preventative maintenance on Coleman furnace. On arrival noticed that the #35 panel from last year appeared new. Tested humidifier and found the saddle valve was defective. Replaced the saddle valve on site by draining the water heater halfway and installed new valve. Re-lit water heater pilot. Inspected all fittings for water leaks. Tested humidifier drain line. Installed customer supplied MERV 11-16x25x5 filter. Installed Chud supplied #35 water panel. System is now operating properly and ready for the season. Coleman M#TM9V080B12MP11CA, S#W1K6001398. Filter-16x25x5 MERV 11, bypass humidifier #35 panel.