Thanks for all the thoughtful replies. On the Filter Issue, I think I am coughing during the night, and the back pressure is what is kicking off the filters (and if it's the "cat" we have other issues in our pet free home <wink>). I will give the rubberband approach a try. On the pressure, I suspect...

Hi Folks! Am a newbe who have been on the system for 4 nights now. Basically getting used to the device and the operation. I use a full mask and have a fairly significant pressure setting of 17cm. I am using a Respironics System One with the humidity tank. As far as I can tell I am only in the CPAP ...