Tube Temp and Humidity Setting To Avoid Rainout (2025)

tomkelly

Posts: 6
Threads: 2
Joined: Jan 2024

Machine: AirSense AutoSet 10
Mask Type: Nasal pillows
Mask Make & Model: Unsure
Humidifier: Unsure
CPAP Pressure: Unsure
CPAP Software: Not using software

Other Comments:

Sex: Male
Location: USA

04-10-2024, 03:08 AM

I have a ResMed AirSense 11 and have been using the auto settings, but have consistently been getting rainout every night and it’s horrible.

I keep the room around 67 degrees every night because I like to sleep in cool temperatures. I have tried lowering the tube temp and the humidity settings all the way as low as they can go without turning them off, but nothing has worked. What settings should I have for these so that I stop experiencing rainout?

Every answer I have seen has been very vague and about it depending on personal comfort and answers similar to that. I am just looking for astraight forward answer that tells me what to put these settings at if the room temperature is 67 degrees so I don’t get rainout every night.

Thank you!

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cdplatt

Posts: 117
Threads: 0
Joined: Sep 2021

Machine: ResMed Airsense 10
Mask Type: Nasal mask
Mask Make & Model: ResMed AirFit N20
Humidifier: ResMed HumidAir
CPAP Pressure: 7-14
CPAP Software: OSCAR

Other Comments:

Sex: Male
Location: United States

04-10-2024, 05:46 AM

Keep the humidity settings low but INCREASE the tube temp until the rainout stops. However, on the auto setting, you should not be producing rainout.

Make sure the water chamber is not overfilled. You can try keeping the climate line under the covers so it doesn't struggle as much against the cold room air (though that may make it more difficult to manage leaks with the nasal pillow).

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tomkelly

Posts: 6
Threads: 2
Joined: Jan 2024

Machine: AirSense AutoSet 10
Mask Type: Nasal pillows
Mask Make & Model: Unsure
Humidifier: Unsure
CPAP Pressure: Unsure
CPAP Software: Not using software

Other Comments:

Sex: Male
Location: USA

04-10-2024, 11:38 AM

I fill it up to the “full” line each night, is that too much? I thought I was supposed to be doing that hahaha, but I definitely don’t use all of the water in the tank each night, maybe a little less than half. Last night I used just about half of it.

And yeah, I thought Auto everything would be great and that I wouldn’t have to worry about rainout, but my face gets soaked every night on auto.

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OpalRose

Posts: 13,427
Threads: 73
Joined: Nov 2014

Machine: ResMed AirCurve 10 VAuto
Mask Type: Nasal pillows
Mask Make & Model: ResMed AirFit P10
Humidifier: With ClimateLine hose
CPAP Pressure: EPAP 8.4 PS 3.4 Trigger-High
CPAP Software: ResScanOSCAR

Other Comments: Wellue O2Ring™ Oxygen Monitor

Sex: Female
Location: Ohio, USA

04-10-2024, 12:17 PM

I've found for me, that using the Manual setting better at keeping rainout at bay.
I know you want definite answers, but it's not quite that simple.
A lot depends on the temperature of your room. If you keep your room at 67deg,
Then you'll have to raise tube temperature and decrease humidity level. This can be done in the Manual setting. You'll have to experiment. It's going to be trial and error.

Using a soft fleece hose cover is helpful. Also, the hose should be routed up from the machine and then backdown to you.

Climate Control Auto:
Climate Control Auto is the recommended and default setting. Climate Control Auto is designed to make therapy as easy as possible, so there is no need to change the temperature or humidity settings.
Climate Control adjusts the humidifier output to maintain a constant, comfortable humidity level of 85% relative humidity while protecting against rainout (water droplets in the air tubing and mask). Tube Temperature: In Climate Control Auto there is no need to change any settings, but if the air in the mask is too warm or cold for the patient, the tube temperature can be adjusted. The Tube Temperature can be set to anywhere between 60–86°F (16–30°C), or turned off completely.

Climate Control Manual:
Designed to offer more flexibility and control over settings, Climate Control Manual lets the patient adjust the temperature and humidity to the setting which is most comfortable for them. In Climate Control Manual, the Tube Temperature and the Humidity Level can be set independently, however, rainout protection is not guaranteed. If rainout does occur, first try increasing the tube temperature. If the air temperature becomes too warm and rainout continues, try decreasing the Humidity.

OpalRose
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UnicornRider

Posts: 613
Threads: 6
Joined: Oct 2020

Machine: ResMed AirCurve 10 VAuto
Mask Type: Full face mask
Mask Make & Model: FitLife Total Mask FFM, F&P Evora FFM, Mouth Tape & SCC
Humidifier: ResMed Climate Control Auto, Climate LineAir heated air tubing
CPAP Pressure: PS 4.4 over 18.2-23.4 (cmH2O)
CPAP Software: OSCAR

Other Comments: Previously on Philips Respironics REMstar Auto (System One 60 Series) Numerous Mask/Pillows/& Hybrid

Sex: Female
Location: Scablands of Eastern Washington

04-10-2024, 12:21 PM

Temperatures are dependent upon many different elements.

Do you use a hose cover?

Do you use a Hose Hanger?

is your CPAP located below the height of your mattress?

What is the relative humidity inthe room?

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Nightynite

Posts: 718
Threads: 21
Joined: Nov 2018

Machine: Resmed A10
Mask Type: Nasal mask
Mask Make & Model: Dreamwear Nasal
Humidifier: Resmed A10
CPAP Pressure: 8.6 - 10
CPAP Software: OSCARmyAir

Other Comments:

Sex: Male
Location: USA

04-10-2024, 12:26 PM (This post was last modified: 04-10-2024, 12:29 PM by Nightynite.)

You don’t want the water chamber to run dry, so fill it up every night. Sometimes people state a dry chamber produces a burnt or unpleasant smell since the the hot plate is just warming up an empty chamber.

Put it on 4 and hose on 75 and report back tomorrow.

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tomkelly

Posts: 6
Threads: 2
Joined: Jan 2024

Machine: AirSense AutoSet 10
Mask Type: Nasal pillows
Mask Make & Model: Unsure
Humidifier: Unsure
CPAP Pressure: Unsure
CPAP Software: Not using software

Other Comments:

Sex: Male
Location: USA

04-10-2024, 01:46 PM

Thank you so much for this! I actually tried tube temp 76 (couldn’t choose 75), and humidity 4 a couple nights ago and still got rainout, so I just put it back on auto because I have no idea what to do.

Tonight I think I’m gonna crank it all the way up, I think 86 or 89 is the highest it’ll go, and leave humidityat 4, and see what that does. This whole rainout thing I’m dealing with is just the worst.

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Nightynite

Posts: 718
Threads: 21
Joined: Nov 2018

Machine: Resmed A10
Mask Type: Nasal mask
Mask Make & Model: Dreamwear Nasal
Humidifier: Resmed A10
CPAP Pressure: 8.6 - 10
CPAP Software: OSCARmyAir

Other Comments:

Sex: Male
Location: USA

04-10-2024, 02:15 PM

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HalfAsleep

Posts: 1,518
Threads: 71
Joined: Aug 2017

Machine: Resmed AirCurve 10 VAuto biPAP
Mask Type: Full face mask
Mask Make & Model: Resmed AirFit F40
Humidifier: Built-in
CPAP Pressure: 7-13
CPAP Software: OSCARSleepyHead

Other Comments: Still half asleep.

Sex: Female
Location: US

04-10-2024, 10:22 PM

Make sure the humidity has to go uphill at some point between the unit and your mask. Water goes down hill. If you have the whole hose going downhill, you will have a droplet brook heading to your mask. If it goes uphill, you'll get the light mist.

You can do this by placing the unit below your head level, hanging it on one of those hook thingies, pinning it to the headboard, whatever...

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mesenteria

Posts: 1,729
Threads: 13
Joined: Jan 2018

Machine: ResMed AS-11 Elite
Mask Type: Nasal mask
Mask Make & Model: AirFit N20
Humidifier: ResMed
CPAP Pressure: 5-8
CPAP Software: OSCARmyAir

Other Comments:

Sex: Male
Location: British Columbia

04-10-2024, 10:33 PM (This post was last modified: 04-10-2024, 10:34 PM by mesenteria.)

Can you feel your tube warming a bit seconds after your machine starts? If it isn't noticeably warmer, even by two-four degrees, it may not be working. Could be contacts, could be the nicad wire spiraling....?

Generally, rainout means your machine IS producing more humidity than it would if there were no water in the reservoir, but it is condensing because the tube's inner surface is too cold to keep the latent water content in vapour form. You must: raise tube temperature, or cover/insulate the tube, or lower the moisture you have dialed in, or raise the room temperature. I've said 'or' to each of those, but the better approach might be to do a tad of two or all three factors.

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