Z1 Heat Moisture Exchanger by HDM Z1

I normally use a cpap with a water humidifier tray, but decided to try a travel unit (Z1) that did not have this. Very surprised at how well these units work - almost identical to using the water humidifier. Recommended product!

This is a GREAT product for you if you travel and don't want to lug your CPAP humidifier unit along with you. It keeps you from waking up with dry mouth. What more can you ask? You just put in in between your mask and hose and there you are. Be sure to exchange every month or so and let it dry completely before storing.

Fits in line with hose. I only use these for travel as my everyday ResMed CPAP has a water chamber. Price should be much lower.

Doesnt work in Colorado for someone who relies on the humidifier. Although some of the reviews were not promising I was hoping it would work for me, so I could extend my CPAP battery throughout the night and not wake up with a very dried nose. It took a me an hour to wake in pain. Unfortunately It didnt work in the dry back country of Colorado.

I ordered one to hold for power emergencies when I can't run my CPAP humidifier and tubing heater function. Would also work for very low temperature sleeping when the device can't keep up with the low temps. Maybe good for compact travel CPAPs. The design is not for long term use, no way to clean it and keep it clean. Too much non-recyclable plastic to waste 4 of these per month, year around. It costs about a dollar per night to use. It has to be near to your mask to absorb your moist exhalation for re-use. If you can't feel your warm exhalation in the vents of the mask, there is no moisture to make this work for you. The most value from this comes with nasal pillows that have no air chamber on your face. Large masks already recycle part of your moisture. Wetting it with distilled water would not be a good idea and it is not designed for that. That would dry fast and leave you dry most of the night. The idea of breath moisture recycling was first used in SCUBA regulators 30 years ago.

This keeps my humidity steady thru the night.

Better than nothing but doesn’t provide much moisture. Too expensive to only get 7 times. If that!

Use when I'm traveling. Can't tell any difference from the normal water one. But given how the device is made way over priced, in my opinion, for everyday use. To bad.