I have been using my C-Pap for about a year now. When I first got it, every time I used it, I would get an awful sinus infection, then have to stop my C-pap and go on 10 days of antibiotics. I found I simply could not use my C-pap, at all, without the following. This has stopped my mucous / sinus infections completely!! Try:
You have to have a hot water reservoir that has a heater in it.
Even though the directions says not to use hot water, use hot water.
Add about 1 tsp. of Vicks Vap-o-steam in water, just before you use C-Pap.
You have to do this every time - you canot reuse any vaposteam, either.
Make sure your water chamber has a dial for steam intensity - mine has to be at level 3 to work well.
Also, you have clean your machine, hoses, etc at least every 4 days. I have tried every technique on the book, but what works for me really well is:
You will need a plastic dish pan that is deep enough to hold all of your equipment. Rinse all equipment first by just running hot water through it: mask & all pieces, hoses, water reservoir, etc. Then, put all in plastic pan. Pour in about 1/4 cup of liquid Pine Sol, and fill pan with hot water. Let soak for about 15 minutes. Rinse out all pieces completely with water. Then, to dry:
Buy a $10 steel, metal fan from Walmarts. Trust me on this, it works! Set up the fan on medium high. Lay all pieces on a heavy towel in front of fan. Take a gallon water or milk container - run both ends of the hose thru the handle to hold, so the air will go down the hose. Let everything dry - it will only take an hour or so. You're done!