Probably should have added a poll to this thread.
Using my H5i @ 5 and uses almost the full tank of water.
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I like the humidifier on my F&P Icon APAP. It's set low, at 4, but that's fine. As other posters have said, it soothes the sinuses and helps keep your throat and mouth moist. Imagine breathing in dry cold air. Your sinuses would revolt and your mouth would be as dry as the Sahara Desert! Eeeek!
I've unplugged the humidifier on really hot nights, but always end up with a 'dried out' feeling in my nose the next day. It's worth trying out, and everyone is different, so you may not have the same problem I did.
never used a humidifier, never understood the need
So...I will try sleeping without the humidifier (I must tweak) and report on my experience. Unless...I end up as a crispy zombie.
Try doing without it and see how you do, it's a comfort feature; some people don't use their humidifiers.
I use my hunidifier year-round.
Before CPAP therapy, I was proned to nosebleeds and the humidifier helps to keep my nose from drying out and now that I'm using CPAP, no more nosebleeds, YAHOO.!
Let us know your findings.