Human Design Medical Heat Moisture Exchange Unit for CPAP Machines

    Top Reviews

    "I recently purchased HMEs to use with my Transend travel CPAP. They provide adequate moisture much like the water unit. These are great for travel."

    January 3, 2018

    "I had my doubts that this would be able to replace a big water reservoir humidifier, but I actually like it better."

    May 13, 2016

    Product Overview

    The Heat Moisture Exchange Unit for CPAP Machines is a waterless humidification option available for nearly every CPAP machine and mask. Designed to re-use moisture from your exhaled breath, the Heat Moisture Exchange Unit offers an alternative to water-based humidification to provide a solution to drying out from CPAP air.

    Take it with you on your next flight or outdoor adventure, with less to pack and minimal mess. It also uses no electricity, so it won't be a drain on your CPAP battery pack!

    Manufactured by Human Design Medical.

    Product Features

    The Heat Moisture Exchange Unit can provide the following benefits:

    • Extremely Portable
    • Less expensive
    • Less messy
    • No regular cleaning
    • Works with almost any machine
    • Compatible with most CPAP masks

    All you need to do is connect the moisture unit between your mask and machine hose. From there, you'd breathe. That's all there is to it.

    Use for Up to 7 Nights Before Needing Replacement

    Manufacturer testing has shown the heat moisture exchange unit can be used for up to seven nights before being replaced. This is the HME only and does not include any other machine parts.

    CPAP Machine Compatibility

    The HME is designed to work with almost any CPAP machine, so you'll never need to worry if it's compatible.

    Past customers have used it with success on the following machines. This is not a complete list:

    • Z2 Auto
    • Z1 Auto
    • Transcend Auto
    • Transcend 3

    And many other machines too!

    Both the HME device and the Z2 and Z1 Series machines are manufactured by Human Design Medical, making the pairing a perfect fit.

    CPAP Mask Compatibility

    Here are some examples of compatible masks. This is not a complete list:

    • AirFit F30
    • AirFit F20
    • AirTouch F20
    • Simplus Full Face
    • ComfortGel Blue Nasal
    • ComfortGel Blue Full Face
    • UltraMirage II
    • UltraMirage

    And many other masks too!

    When selecting a mask, please note the Heat Moisture Exchange Unit for CPAP Machines will not work with masks that have a short tube extended from the mask frame, such as nasal pillow masks. It is also not compatible with the AirMini or AirMini masks.

    DreamWear masks are not compatible as the elbow is not close to the nose. The HME must be very close to the moisture of exhaled air to function properly. It must be connected to a mask with a simple elbow in order to give optimal results.

    Two Different Sized Openings

    There are two different size openings on the heat moisture exchange unit. The wider opening is designed to connect to the mask, while the thinner opening connects to the long hose attached to the machine.

    Return On Warranty Issues Only


    This Product Includes...

    • 1 - Heat Moisture Exchange Unit

    Product Specifications

    HME Dimensions: 3.25 Inches L x 2 Inches W x 2 Inches H

    HME Weight: 0.768 Ounces always offers these services:

    • 8 am to 8 pm CST Toll Free Phone and Email Support
    • 24 hour access to our Support Forum
    • Learning Center for information on sleep apnea and cpap equipment
    • Consumer Purchasing Trends Reports
    • Warranty Services for all items purchased through
    • Insurance Compliant Invoices
    • Free Prescription Request System

    Important Tips

    Cleaning Tips

    The Heat Moisture Exchange Unit for CPAP Machines cannot be cleaned. The manufacturer suggests replacing the unit after using it for up to seven nights.

    Utilization Tips

    Originally, the manufacturer found the HME to only be suitable for one night's use. After further research and testing, the device has been approved for up to seven night's use. Be aware: Some packaging and documentation may still state the unit should be discarded after 24 hours, but the heat moisture exchange unit may be used for up to 7 nights.

    This product does NOT include any other machine parts.

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