PS You stated to "connect a new HME filter to the machine" The problem is that an HME is a "humidifier" and NOT a filter. In the video you had 2 filters, one on the exp and one on the insp line. The person on the video connected an "HME." not a filter. Unless he connected an "HMEF" which is humidification and filtration in which case you would have "3" filters in line which would cause unnecessary resistance to breathing.
