NOISES-Popping, Knocking, Gurgling

[ccgreen]

I have had CPAP for 3 months. ResMed 11 and ResMed P20 mask. Rocky start, but going well now, except for 1 issue that is intermittent.
I have gotten these
popping, knocking, gurgling sounds. I was told it was condensation/rainout by
the Respiratory Therapist at the supplier.
It makes sense except when
it happens right when I turn it on, and it's so loud that I can't even use it.
This has happened about 5-6 times. The other times, maybe about the same amount
has happened during the night.
I was told to lower
humidity (have dry mouth and mostly use mouth tape (Dream Recovery that's been
great); raise temperature. I have done all of this, along with a fleece-lined
cover for the tubing.
This all makes sense, and I
have done this.
My question is, why would
this still be happening:
**Intermittently/occasionally
(with the same settings and the same room temperature - nothing changing, and
**Why does the noise happen
when first turning on, BEFORE there can be any water buildup?
Has anyone experienced
anything similar and come up with any ideas or solutions?
Thank you, and best of luck
to all
 

[Sleeprider]

Make sure your CPAP tubing rises from the device to allow any water that ends up in the tube to flow by gravity back into the machine. Do not overfill the humidifier tray. It is very easy on the Airsense 11 to slosh water into the tube. The 10 series swiveled, but the 11 is fixed and traps water. Elevate the tube and keep the machine low.

[ccgreen]

Thank you for that information - very helpful and appreciated.

[Sleeprider]

The tube can act just like a P-trap in a sink and collect water. Even a small amount in that narrow tube will make a lot of noise and disrupt airflow. This is a very common problem that is usually easy to fix.