POLL: Rainout and Supplied Humidity - S9 vs PR System One

[thecomputerguru]

All responses reference whether or not the machine has the ability to handle rainout and still supply enough humidity to yourself

[DreamDiver]

I'm not sure the two systems are equivalent with regards to rainout control methods.

• The System one has one temp sensor on the flow generator itself.
• The S9 has one at the generator, but also a second one at the mask if the climateline hose is attached.
• The System one reduces heating (and consequently humidity) when rainout is likely to occur base on the dew point differential. It may seem irksome that you're not getting the humidity you think you want, but the rainout reduction is probably worth it. Consider - the water won't stay in the air anyway. Why cause a rainstorm in your hose if you don't have to?
• I don't know whether the S9 does the above when the climateline hose is not attached or not. It might be nice to hear confirmation one way or the other from other users who know better.
• However, when the climateline hose is attached, it provides humidified and warmed air at a specific temperature along the entire length of the hose that decreases the likelihood of rainout in the hose or at the mask, regardless of ambient room/environment temperature. Air temperature and humidity inside the hose are entirely controlled. Hose snuggles become more about keeping an uncomfortable hose away from your body than removing rainout.
• I find the S9's auto humidification method a little too dry. I like the humidity set to 2.5 when using a standard or slimline hose. With the climate line, you can only set the air temperature on auto. Yes the water heats up, but at 75 degrees, the air feels cold. At 80 degrees, even though the air is warm, whatever the auto setting is for humidity, my throat gets dry in three hours. I like it set to manual. I set the air temp to about five degrees above room temp and the humidity to 2.5 and I'm good. The air does not feel cold, and the humidity is good. It's nice to have that control.
• I have not figured out how to turn off the humidifier on the S9 to use it as pass-through only. That information might be useful for air travel/camping. It's probably simple. If anyone can tell me, I'd be grateful.

[Nord]

Hi DD...

From page 17 S9 Clinical Manual....

Managing Climate Control
Designed to be ideal for most patients, Climate Control Auto enables the automatic delivery of a constant
value of absolute humidity while protecting against rainout.
To allow for increased flexibility, Climate Control can be turned to Off in either the Patient Setup (when
enabled) or the Clinical Setup menus. Setting Climate Control to Off disables the automatic control of
humidity and allows the patient to set humidity and temperature levels independently. However, rainout
protection is not provided when Climate Control is off.

1 When the temperature setting is set to Off the tube will not heat the air, nor will the humidifier heat
the water to add humidity to the air.

Nord

[frh]

I had a System One CPAP (no data) for almost a month. It did not take long to figure out humidity helped my irritated esophagus. When I had the heater set at 5, water in the mask would wake me up. At 4, I could see droplets in the mask and the air seemed a little cold when I was trying to get to sleep, but it didn't wake me.

I have had my S9 for 2 nights. They had the climate control set at 80 degrees when I picked it up. It's very comfortable and seems to be working great right where it is. Unlike the S1, I don't really sense the humidity.

I have no idea what was happening with the System One, but my first night on the S9, my AHI was 2.8 and last night it was 1.0. Last night was also the first night in years that I had 7 hours of un-interrupted sleep. I am very happy that I got the S9 instead of the System One APAP.

[DreamDiver]

1 When the temperature setting is set to Off the tube will not heat the air, nor will the humidifier heat
the water to add humidity to the air.

Thanks Nord!

[Big Daddy RRT,RPSGT]

With a traditional humidifier I always use a tubing cover, I increase the setting on the humidifier each night until I get rainout then back it off one notch. So to say the least I like the max humidity possible without rainout for the winter. I use a lower setting in the summer. The only problem I have is on an extra cool night I will get some rainout and have to back down another notch.

The fisher-paykel sensawake auto worked well for me with no rainout and enough humidity.

I used a System one, it left me feeling dry despite using the highest setting and it used almost no water (maybe 20% of the tank). Iwas told by the REP that it was probably because my bedroom is cold. He mentioned they would be adding a manual overide so it could be used as a traditional humidifier. The auto humidifier on the System One does not compensate for a tubing cover which can increase the amount of moisture you can add to the air without getting rainout. I was disappointed and dry each night using the System One.

I now use the S9 with integrated humidifier and climate line. I was dry using the auto setting. The more I increased the temp the more dry I felt. It only got warmer, it didn't seem to add moisture. No rainout was ever noted. I changed to the manual setting, At #6 I get rainout so I increased the climate line temp to 80 still rainout, then 82 degress it stopped the rainout but it was way to warm for me at that temp (swampy). I am now on 78 degress and #5 humidity, and it is the perfect balance of temp and moisture. I would recommend the S9 or the Fisher-Paykel sensawake if you like humidity. I have not tried the Thermosmart from Fisher-paykel but I bet it works well.

[wil]

Nobody's mentioned how dependent humidity settings are on one's mask... I find that I don't need much humidity with a nasal mask, but need a higher humidity with a full face. I'll be using a hybrid for the first time tonight, and I'm told I'll need to crank the humidity (because of the pillows). In the two months I've been using xPap with my System One, I have never experienced rainout at all (so far).

[Uncle_Bob]

Nobody's mentioned how dependent humidity settings are on one's mask... I find that I don't need much humidity with a nasal mask, but need a higher humidity with a full face. I'll be using a hybrid for the first time tonight, and I'm told I'll need to crank the humidity (because of the pillows). In the two months I've been using xPap with my System One, I have never experienced rainout at all (so far).

I'm the opposite, i do not like to feel the humidity on my skin with a FFM, it makes me feel too hot like i'm sweating. With a nasal mask the humidity gets to go where its needed so i can crank it up.

[Needsleep75]

I cannot attest to the PR system one as I do not own one but I do have the S9.

I used the S9 for about a week while waiting on my climate line hose to come in that I ordered and it seemed very good at controlling rainout as I didn't really experience any with the normal tubing. Of course thats probably not a long enough sample time to judge adequatly thouhg. The climate line tubing on the S9 though takes it to a whole new level. It was the main reason that I got the S9 over the System one and it has been awesome in all respects.