resmed s9 for 16 years
nope...its the heated-hose
I no longer suffer from dry mouth...ditch the heated-hose...problem solved
I have had the worse every experiences with dry mouth...to the point where I couldn't close my mouth and my throat was painful.
For years...so 2 days ago, I changed out the advance heated-hosed designed for my Resmed S9, that removes condensation and
replaced it with a regular hose. I also purchased a hose's cloth. Wow, what a difference!!! no more dry mouth pain. The hose is a little wet inside, but that's OK. I can always turn down the humidifier. Sometimes the simplest solution is simple.