http://www.resmed.com/us/patients_and_families/improving_therapy/humidificationfaqs.html?nc=patients
Water in my hose!
I can’t use my humidifier during some nights because my house fills up with water condensation.
What can I do about this and why does this happen?
This condensation is called "rainout."
If your room is cold, the warmed, humidified air hits the colder room temperature and cools. When air cools, the amount of
humidity (water vapor) that it can hold is reduced, which causes the humidity to "rain out."
The amount of water air can carry varies with temperature: warmer air can carry more water while cold air can carry less. As
warm air becomes cooler (eg, overnight), it has less capacity to carry water, so water condenses and forms droplets.
There are several ways to deal with this situation.
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Use the S9 Climate Control system.
Try turning your humidity level down.
Raise the temperature of your bedroom at night to lessen the difference between the room temperature and the
humidifier—make sure that your bedroom window is closed.
Run the air tubing beneath your blankets to keep it warm. Alternatively, you can cover the tube with a ResMed Tubing
Wrap or a tube sock. The goal is to keep the tube and its air warm.
How often do I need to clean the water tub on my humidifier?
Daily
It is recommended that you wash your water tub in warm water, using a mild detergent.
Rinse thoroughly with clean water and allow them to dry away from direct sunlight.
Monthly
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Inspect the water tub for wear and deterioration.
Replace the water tub if any component has cracked, become cloudy or pitted.
Clean white powder or deposits in the water tub by using a solution of one part household vinegar to ten parts water.
Should I turn my humidifier on before I go to bed to make sure the water is warm first?
If you find the air dry and irritating, then you may want to turn your humidifier on 20 minutes prior to going to bed.
If I run out of distilled water, is it ok to use tap water every once in a while?
Using distilled water will maximize the life of the water tub and reduce mineral deposits. However, it is ok to occasionally use
tap water to clean your humidifier.
Do not use: bleach, alcohol, chlorine or ammonia-based solutions; moisturizing, antibacterial or glycerine based soaps; and water
softening and unapproved descaling agents.