Travel PAP machines - heat/moisture exchange units - do they work?

[Bostonsnow]

Hi all,

Just bought and received a travel size Breas Z2 Auto machine.  As known, these dont have humidification water chambers.  Instead it has this "heat/moisture exchange" (HME) filter thingy that is supposed to save and return your own moisture from your breath.  Looking at it, it seems to be just a dry sponge .   It does not interfere much with air flow which is good, But do they really work to "save" and return moisture to your breath?   what has been people's experience?

[cate1898]

I have used some 'Z1 Heat/Moisture Exchanger (HME) that I purchased through my online retailer. I used them when I was away for an extended time (10 days or more) and either wanted to conserve the energy my machine was using or wanted to pack lighter. I did use it with my DreamStation GO Travel CPAP machine for travel before the recall was issued...but it's gathering dust waiting...

Either way, I felt it did help somewhat to feel less 'dry' in the morning. However, I can't tell you one way or another if they are truly beneficial for providing some humidification, try one for yourself and see.