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I'll throw my 2 cents in here. My system seems like it won't use much water and then the 2 or 3rd night drain the tank. Plus the lights all blink and beep when it starts up and some times I have to unplug and start it alll over because it sticks in a nonstop beeping mode? bad? Can't be sure.

Hi akcpapguy,

Yes, my humidifier setting has always been on. What I was trying to say is that, at a setting of 4, I was getting rainout(humidifier water delivered into my nose) in the middle of the night. My feeling is that the rainout sensors alone are not sufficient to prevent this, and Resmed in addition to using a sensor also uses an embedded coil in the hose to prevent rainout, which I think Respironics should also do. One way around this is to use the Aussie heated hose with the Respironics humidifier.

linda12345 wrote:i am new to the CPAP world and have the Respironics system one humidifier. I am confused as to the the amount of humidity that I should be aware of. Basically, very little or no water is used from the water compartment and I do not feel any moisture in the tubing or the nose piece. I have used the setting of 3 or 4. Tonight I will try 5. I am assuming that the higher the number the more humidity. Is that right?
linda

Last month I called my DME about the fact that my humidifier seemed to be using no water and I was concerned it was defective. She told me to run it for a while and then feel the plate to see if it was warm. I did and it was. She also suggested I not fill the tank more than 50%, so I followed her instruction and the smaller volume of water warms better. I also turned it up one night by accident to 5 (instead of 3) and it's now using up the water. I suspect that the PR System One needs a higher setting for the humidifier to work. I'm not sure if the higher setting is optimal for my therapy, but at least I know the machine is working.

I have had many problems with the Respironics system one. I have had 2 compressors and 2 humidifiers both fail after 1 year. My humidifier has rain out some nights. Other nights it uses no water and produces no humidity even when set on 5. The metal on the bottom does warm up. I can go to sleep with comfort but wake in the middle of the night when it becomes too dry. I did check that the control setting for system one humidity is on. I am a mouth breather and wear a full face mask.
I am very frustrated since I have changed this machine out so many times with Apria. Unfortunately with Medicare coverage Apria tells me I can not get another machine for 5 years. I would welcome any suggestions or comments.
Thanks.

2-1/2 year old thread. I suspect the OP has moved on.

I had trouble with humidifiers both on my previous M model and current System One APAP. Both times, DME has just swapped under warranty. I've had other issues with APAP itself. Always, Respironics warranty has been great. Once they even covered something out of warranty, just because part shouldn't have gone bad.