WHISTLE

[sleepyangel]

Hi Fellow Cpapers! Hope someone can help. I have a Resmed VPAP Auto 25. It is very quiet, but I've been hearing a high pitched whistle when I breath in and out. Don't hear it when I hold my breath. Sounds somewhat like a wind chime. Doesn't seem to be the mask or hose valve. Has anyone else experenced this. Any way to eliminate it. Appreciate any feedback.

[RipVW]

Probably not your cause, but I find that if my mask is not completely dry and a few water droplets find their way to the exhaust vent of my UMFF mask, it whistles! Very annoying, so I just have to take it off and dry with a tissue any lingering drops of moisture in the mask.

[Gerryk]

you can get that from condensation or from washing the mask and not drying it completely. You can also get that noise from the exhalation/ anti asphyxiation valve.

Gerry

[LinkC]

Sounds exactly like water somewhere in the hose/mask assembly. Doesn't take but a few drops. And it really sucks at 2am!!!

[TWW]

I also got some whistles and "oboe notes", especially with the Quattro's little ventilation grid. You may want to lower the humidifier setting a notch, if you are using one.