Here's what worked for me (I've been on CPAP now for about a year, and run my auto remstar at 10 to 15 with 90% logging in at 11 inches-water pressure ... my mouth breathing was almost non-stop until I implemented these steps): I do the following: 1) wear a chin strap 2) wear a NoseBreathe (upper on...

I've used a Remstar Auto CFlex for 4 months, and now I am using the Respironics M Series Auto, which I've been using for 3 weeks. Both of my CPAP machines have the integrated heated humidifier. The noise that M series produces is quite a bit different than the Remstar Auto. The Remstar Auto produced...