KatieW wrote:tillymarigold wrote:
If you're not using the humidifier, I don't know how you could have rainout. Rainout happens when the warm moist air from the heated humidifier passes through the cold hose. If the air going through the hose isn't heated, there should not be any rainout.
Further up thread, Sleepybaby said it is 4-5 degrees Celcius in her room--that's 39 degrees Fahrenheit!
Yes, I know that. But if the air in her room is 4-5°C, and she's not heating the air in her CPAP, then both the hose and the air in it should be at the same temperature. It shouldn't matter *what* temperature that is; rainout happens when the air is warmer than the hose.
Suppose you had two drinking glasses. You kept one in the cupboard and one in the freezer. If you took the one out of the freezer and set it on the counter, then you would get condensation, because the air is much warmer than the glass. That's how rainout happens. But you took the one out of the cupboard and set it on the counter, nothing would happen, because the glass and the air are the same temperature. That should be how it works for the OP--it shouldn't matter what temperature the air *is*; it just matters whether they're different temperatures or not.
EDIT: You edited your post after I replied ... I don't think that if her breath is condensing inside that mask that's technically "rainout" but you could be right that it's what she's describing. A hose cover wouldn't help in that case, or a heated hose, or anything. There's nothing you can do about the part of the mask that seals to your face being too cold.
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