i also have a c-pap machine. i had lost over 12 pounds as now i sleep through the night. i dont wake up in the monring so tired. i had to eat to stay awake as that was what gave me the energy to even keep awake at work durning the day. try different masks or different hoses also. i did ask about all of the water in the hose. and it was told to me that i ould turn down the heat as that was making the water too hot or warm and that is what causes the condensation. i love my machine. when we go to oz next year that is the first thing i will pack. good luck and hae a good night sleep. blessings ogama