There's something wrong if you can even get 0 flat line leak while awake and if you can't at least get a 0 flat line leak with a mask while awake....and your only choices are leak at the top or the bottom..the mask isn't working...it's either the wrong size or simply that mask isn't suitable for your facial structure.mrog wrote: I can't get the leak rate anywhere near zero, even while awake. By adjusting the angle of the mask, I can choose to have it leak at the top or the bottom, but I can't eliminate the leak
Have you ever used the mask fit feature with your machine? Where it blows your prescribed pressure and lets you adjust for fit and gives you a smiley face or frowny face if the fit is good?
Full face masks have more surface area to deal with so simple physics is going to make sealing more difficult but people manage to get it done all the time. It's not impossible but your leak graphs scare the devil out of me and I am not a person who scares easily with a little ugliness every now and then in the leak department. I am not kidding when I say I see reports with nasal masks and people are mouth breathing all over the place and the leaks aren't as bad as what I saw on your report.
If a new hose doesn't fix the issue (never hurts to try the obvious simple fix first) then you need to look at maybe a different mask.
Which ones have you tried? "Tons" of masks and liners (found you said that elsewhere) doesn't help me much.
Were you able to get decent leak lines when your pressure was 13 and has it only been since the increase to 17 that you have had such ugly leaks?
Have you ever tried a nasal pillow mask?
Maybe we ought to start a thread of your own for your issues instead of continuing to hijack this thread. Normally not a big deal but if we don't find something easy...like a big hole in your current hose....you may need a lot of help devoted to just your needs.
At this point I am amazed that you can even sleep with amount of leak I see on your report.
Oh...also check the anti aspyhxia valve on your mask to make sure it isn't stuck open. Do you know how to do that?