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Humidifier Water Chamber Question
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OpalRose Offline


Posts: 3,163
Joined: Nov 2014

Machine: PR System One REMstar Auto 560 with A Flex
Mask Type: Nasal pillows
Mask Make & Model: AirFit P10 For Her
Humidifier: REMStar heated humidifier with heated hose
CPAP Pressure: Auto Cpap 10-13 AFLEX 1
CPAP Software: SleepyHead EncoreBasic

Other Comments: Started CPAP Therapy October 23, 2014

Sex: Female
Location: Northeast Ohio, USA

Post: #21
RE: Humidifier Water Chamber Question
(09-18-2014 02:37 PM)mbressman Wrote:  I previously had a Respironics REMstar M Series CPAP w/Humidifier (and no heated tubing) and recall that the water chamber for the humidifier would get significantly lower after using it a whole night. Now, I have a newer CPAP (I think it might be the Respironics PR System One REMstar Plus CPAP Machine w/Humidifier or something similar - and it has a heated tubing), and it seems like even after using it a full night there is still a lot more distilled water left in the water chamber in the morning. Could this be because of the heated tubing, or something else? Or is it possible the machine might be broken?


Hi mbressman,
The heated hose only determines the temp of the hose and keeps the air going through the hose a little warmer. It doesn't have anything to do with the water level or the amount of humidity you receive. I believe the settings available for the heated hose on the PR System One is 1 through 5.

The humidifier has its own settings as to how much humidify you want. The settings are 1 through 3.
Note, if you are not using a heated hose, then you can use System One or Classic settings on the PR machine.

03-01-2015 03:35 PM
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OMyMyOHellYes Online

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Posts: 915
Joined: Mar 2013

Machine: Respironics 560 Auto
Mask Type: Nasal mask
Mask Make & Model: Resmed Mirage FX
Humidifier: Respironics System One (no heated hose)
CPAP Pressure: 08.0-15.0 cm/H2O
CPAP Software: EncoreBasic

Other Comments:

Sex: Male
Location: Texas

Post: #22
RE: Humidifier Water Chamber Question
(09-19-2014 03:55 PM)GeoffD Wrote:  To hijack this thread which has an appropriate title for a follow-on question:

What is the long-term impact of using tap water instead of distilled water? I'm 10 days into this on an S9 Auto and it's not using a heck of lot of water each night in the humidifier. I dump it every day and let it dry out. I guess I'll get mineral deposits in the heated hose eventually.

As the water evaporates and gets pushed into the tube, on the way to your nose, you only get the little water molecules. Water vapor is water vapor. Exactly the same off of distilled water or tap water. That's how they make distilled water to start with. Ya might get a little tiny smidge of chlorine gas but...

So no impact on you.

The real impact is on the water chamber itself. If you use tap water, as it evaporates, it will concentrate all the minerals in the remaining water and those will eventually start to accrete on the inside of the chamber itself. I think for the most part, it will just look ugly. I doubt that a tiny bit of mineral accretion in the chamber will hurt you. Now, if you didn't clean the chamber occasionally, I would assume you could get some slime/biologic growth that would not likely be wholesome, but that is not related to the question you asked - and that would be the same with distilled water too.

I know I used to run tap water in the H3i and H4i humidifiers when I had my S-8. After a few months, you could start to see where the water levels were on the inside of the chambers. It was like a cloudy cast on the plastic. Could not get that out - the chambers were made so that they could not be opened to clean inside. But no ill effect from using the clouded chambers. Since getting my S-9 I have used distilled water exclusively and have not had any mineral accretion in the water chamber.

(This post was last modified: 03-01-2015 04:40 PM by OMyMyOHellYes.)
03-01-2015 04:37 PM
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archangle Offline
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Posts: 3,159
Joined: Feb 2012

Machine: ResMed S9 AutoSet
Mask Type: Nasal pillows
Mask Make & Model: ResMed Swift FX
Humidifier: ResMed S9 H5i
CPAP Pressure: 16-20
CPAP Software: ResScan SleepyHead EncoreBasic

Other Comments: Happy PAPper

Sex: Undisclosed
Location: USA

Post: #23
RE: Humidifier Water Chamber Question
The water tank can begin to stink as the gunk concentrates in the tank, especially if it starts to run dry. I get that even with distilled water after several days of topping it off.

Your results in terms of minerals and stench will vary depending on what type of gunk and how much is in your tap water.

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(This post was last modified: 03-01-2015 06:11 PM by archangle.)
03-01-2015 06:02 PM
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