I was wondering if anyone had any experience with a high-pitched whistling sound coming from the machine itself? When I have the humidifier on and mask, the whistle is only when I exhale. I took it in to my RT today, who indeed heard the whistle. THen he took the humidifier off and you could hear a constant whistle from the port on the machine. He said he has only given out 3 other VPAPs and never had experienced this (and he didnt have another VPAP to try) ---I was wondering if anyone knows if this is "normal" or if it could be a defect in the machine.
I have only been using this for a week and am in the process of trying out several differnt masks, as I am quite uncomfortable...Its bad enough to not be able to sleep due to the mask, but the whistling is just plain annoying! THanks so much in advance for any opinions! K.

