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    Top Reviews

    "So amazingly small and so quiet. I am very happy so far with my Z1."

    December 11, 2013

    "Small, lightweight, quiet-what more could I ask for? It's amazing!"

    January 29, 2014

    Product Overview

    Try the Z1 CPAP machine risk free for 15 days from the ship date! Please read the "15 Day Risk Free Trial" section on this page for more terms and details regarding returns.

    How small and lightweight is the Z1 Travel CPAP Machine? Very! At just 6 1/2 inches long and weighing only 10 ounces, it is the lightest CPAP machine available. Data recording capability, quiet operation, and the OPTIONAL integrated Powershell with Battery makes the Z1 versatile and portable for use at home or while traveling.

    Manufactured by Human Design Medical.

    Product Features

    Imagine being able to tuck a CPAP machine with very quiet operation that weighs less than a can of soda into a brief case or tote. Think how easily CPAP therapy can be made part of an active lifestyle when the tiny machine has an optional lightweight, integrated battery system to use on the go. The Z1 Travel CPAP Machine makes it a reality. This is a single pressure CPAP machine and delivers one set pressure all night long. It includes advanced features found on much larger machines meeting therapy needs while traveling or at home.


    • Small & Lightweight
    • Discrete Size & Shape
    • Quiet Operation
    • Z-Breathe Pressure Relief
    • Auto Altitude Adjusting
    • Leak Compensation
    • Ramp Feature
    • Z1 CPAP 15 Day Risk Free Trial
    • OPTIONAL Integrated Battery
    • Free Data Viewing Software

    Tiny & Lightweight

    The Z1 CPAP machine is the lightest on the market. Its small size makes this machine great for putting in a carry on, overnight bag or backpack for camping and hiking. When used at home, the small size takes up little room on the bedside table. Small rubber feet on the machine base help to stabilize the unit. It weighs just 10 ounces and measures 6.48" L x 3.3" W x 2.02" making it roughly the size of a can of soda.

    Quiet Operations

    The Z1 CPAP Machine operates at 26 dBA making it one of the quietest machines on the market. How quiet is 26 decibels? A very quiet room fan 3 feet away and set to a low speed is noted as 35dBA.

    Advanced Features

    • Z-Breathe Pressure Relief: The Z1 CPAP machine offers a reduction in the air pressure to smooth the exhalation process making breathing with the machine a more natural process. Per the manufacturer, set Z-Breathe to 1 for gentle pressure relief, 2 for moderate pressure relief, and 3 for the most aggressive pressure relief. For more information about Z-Breathe, please see the ZBreathe Instructions.

      Please Note: Setting 3 is only available through the latest firmware upgrade. Z1 machines purchased prior to June 2014 will need to have the firmware updated to enable Setting 3. Please see the "Firmware Update" section below for instructions on how to install this update if needed.

    • Auto Altitude Adjustment: The Z1 CPAP machine can operate from sea level up to 8,000 feet above sea level. The machine automatically adjusts as needed to accommodate changes in elevation.

    • Leak Compensation: To help ensure the prescribe pressure is being met during therapy the Z1 machine adjusts the pressure to account for minor air leaks. If an excessive air leak is detected the word "REMINDER" is displayed on the screen. Correct the leak to remove the word reminder.

    Ramp Feature

    The Z1 CPAP machine includes a ramp feature that can be set from 0 to 45 minutes. This allows the therapy pressure to begin at a lower starting pressure and work up to the prescribed pressure. Many CPAP users find this a more comfortable way to fall to sleep. The machine can be set with or without a ramp time.

    Z1 CPAP 15 Day Risk Free Trial

    Try the Z1 CPAP machine risk free for 15 days from the ship date. If displeased with the CPAP machine, contact to receive a return authorization number and a free return label! Please note that offer is valid only within the U.S. The machine and all included parts must be sent to in the original packaging. If the Z1 CPAP is purchased with the power shell, the power shell may also be returned for a refund. Please Note: Additional accessories purchased for the Z1 machine may not be returned with the Z1 CPAP.

    OPTIONAL Integrated PowerShell Battery

    The Z1 CPAP can be ready to go with the optional PowerShell with Battery. The battery is fully integrated with the machine using the unique PowerShell design which holds both the machine and battery in one compact bundle. Battery can be used to run the Z1 machine independently or use the battery as a fail over in case the AC power is interrupted. The PowerShell even includes a handy lanyard allowing the machine and battery to be hung close at hand, such as on a headboard. To read more about the optional battery & PowerShell read here: Z1 PowerShell and Battery.

    Data Recording & Software

    The Z1 CPAP machine records data including the usage time and leaks. The software can be downloaded here: Z1 Software. At this time the software is only compatible with 32 and 64 bit Windows computers. It is not currently compatible with Mac operating systems.

    Software Instructions: Once installed, open the software and connect the Z1 Travel CPAP Machine in STANDBY Mode using the included Micro USB Cable. The "Sync with Device" option should then be offered and selected to view available data. Please note that Microsoft.Net Framework 4.5 is required to install and use this software, and can be downloaded here.

    Firmware Update: A firmware update has been released for the Z1 Travel CPAP Machine. To download and install the firmware, follow these steps:

    1. The Z1 Data Recording Software must be downloaded and installed prior to updating the firmware. Please see instructions above regarding this software.
    2. Sync the Z1 Travel CPAP Machine using the Data Recording Software and save current data stored on the Z1 Machine so it is not lost during the firmware upgrade. After syncing disconnect the Z1 Machine from the PC.
    3. Click here to download the firmware upgrade.
    4. After the firmware is installed, connect the Z1 Machine to the PC and follow the instructions to complete the upgrade process.

    Please Note: This update is for the Z1 CPAP only. This update should not be installed on the Z1 Auto. The Z1 Auto contains different firmware which could be damaged if the firmware for the Z1 CPAP is installed.


    This Product Includes...

    • Machine
    • Fabric Carry Pouch with Drawstring
    • 4 Foot Slim Style Tube
    • 2 - Disposable Filters (1 Installed)
    • Tube Adapter
    • AC Power Supply
    • Power Cord
    • Micro USB Cable
    • Instructions
    • 1 - Heat Moisture Exchange Unit

    Product Specifications

    Device Dimensions: 6.48 Inches L x 3.3 Inches W x 2.02 Inches H ( 16.46 cm x 8.38 cmp x 5.13 cm)

    Device Weight: 10 Ounces

    Power Cord Length: 6 Feet

    Power Supply Cord Length: 47 Inches

    Power Brick Dimensions: 3 3/4" L x 1 3/4" W x 1 1/4" H

    Weight of Power Supply (Without Cord): 0.4 lbs (6.34 oz.)

    Weight of Power Supply With Cord: 0.6 lbs (9.41 oz.)

    30 W AC Supply Input Range: 100-240V, 50-60Hz

    European Voltage Usage: Yes, outlet adapters required

    Typical Power Consumption: 20W (30VA)

    Maximum Power Consumption: 35W (70VA)

    Operating Sound Level: 26 dBA

    Available Pressures: 4-20 cmH2O

    Pressures Setting Increments: .5 cmH2O

    Ramp: 0 - 45 Minutes (5 Minute Increments)

    Operating Modes: Standby, CPAP, CPAP with Ramp

    Z-Breathe Settings: 1,2, or 3 (1 = Gentle, 2 = Moderate, 3 = Maximum Drop in Pressure at Exhalation)

    Z1 Machine Warranty: 3 Years

    Device Housing Construction: Flame retardant engineered thermoplastic

    Filter Material: Polyester Fiber

    Air Outlet Dimension: 22mm conical air outlet

    Supplemental Oxygen Usage: NOT for use with supplemental oxygen

    Operating Altitude: Sea level to 8,000 ft (2,591 m)

    Operating Temperature: 41 to 95 degrees Fahrenheit (5 to 35 degrees Celsius)

    Operating Relative Humidity: 10 to 80% non-condensing

    Storage and Transport Temperature: -4 to 140 degrees Fahrenheit (-20 to 60 degrees Celsius)

    Storage and Transport Relative Humidity: 10 to 80% non-condensing

    Operating Atmospheric Pressure: 101 to 75.3 kPA

    Electromagnetic Compatibility: Compatible with IEC 60601-1-2

    IEC 60601-1 Classification: Class II (double insulation), Type BF

    Aircraft Use: Complies with RTCA DO-160G standard for use in flight

    Stored Data: Time of Use, Leaks

    On Board Data Storage Time: 30 Days of Treatment

    Software Operating System Compatibility: Windows 8 or Older

    OPTIONALMicro SD Card Dimensions: 11.0 mm Wide × 15.0 mm Long x 1.0 mm Deep (0.433 in Wide × 0.591 in Long x 0.039 in Deep)

    OPTIONAL Z1 Battery Specs 14.4v Li Ion Battery; 45 Watt hour; Complies with RTCA/DO-160, Section 21, Category M

    Required Settings: 1 Pressure Setting is Required

    Unless directed otherwise, will leave the Z1 Travel CPAP Machine at the following default settings:

    • Ramp: Off
    • ZBreathe Setting: 2 (Moderate) 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

    User Manual:

    The user manual included with this machine can be viewed and downloaded here: Z1 Travel User Guide.

    FAA Compliance Letter: To view the FAA compliance letter for the Z1 Travel CPAP Machine, click here.

    SD Cards Not Intended For Use with Z1 Machines

    Please Note: The manufacturer recommends users not to use an SD card with the Z1 series of machines. The SD slot is intended for manufacturer testing purposes only. If the card is used, it may cause the machine to malfunction. Data accumulation is not affected by the SD slot as it is not intended to generate sleep results. Instead, use the USB cable along with the Data Viewer Software to view personal sleep records on the machine.

    Plug Power Cord Into AC Adapter BEFORE Plugging Into Wall Outlet: Follow these steps for powering the Z1 Machine:

    • Initially, DO NOT plug the AC power cord into a wall outlet.
    • Step One: Plug the AC power cord into the AC Adapter.
    • Step Two: NOW Plug the AC power cord into a wall outlet.
    • Step Three: Plug the pin end of the AC Adapter into the Z1 machine.
    • When powering up the Z1 machine displays start messages.
    • Standby mode begins approximately 10 seconds later, the display will show Pressure cmH2o 0.0.

    Sound Level Tips

    Although the Z1 CPAP machines have a low decibel rating of 26 dBA, some users report a noticeable pitch from the machine’s motor, which may be a result of its reduced size. Unlike larger machines, smaller travel CPAPs have less internal room and components to absorb the sound of the motor. To help reduce the sound of the motor, consider adding the Q-Tube In-Line CPAP Muffler Kit to the device.

    Tube Adapter Tips

    To avoid damange to the silicone gasket connection on the machine, please attach and detach the tube adapter gently from the machine. Using excessive force can create tears or damage to the silicone gasket which could prevent the machine from operating properly.

    OPTIONAL Z1 PowerShell Use & Charging: Information about charging the battery and using the PowerShell is available on that product page: CLICK HERE.

    The Z1 battery must be inserted into the PowerShell for charging. The Z1 CPAP machine is not required to be in the PowerShell to charge the battery. When the Z1 machine is inserted in the PowerShell with the battery, the charge information is displayed on the machine screen. The charge level of the battery cannot be determined if the machine is not inserted in the PowerShell. Battery run time varies based on the pressure setting of the machine.

    PLEASE NOTE: When not in use, the manufacturer suggests removing the battery from the PowerShell, as battery charge will be depleted if connected.

    Battery Backup Configuration:

    Please Note: In a situation where a power outage is expected but not certain, the battery can be used as a failover. While AC power is available the battery will not lose life cycles.

    The Z1 Travel CPAP machines can be connected to the OPTIONAL Powershell and to AC power without causing the lifespan of the battery to decrease. The battery is designed to provide AC power to the machine while it is available, and transition immediately to DC power from the battery if AC power should fail. Once AC power is restored, the battery will begin providing that power to the machine again.

    OPTIONAL PowerShell & Battery Charge Bars: When the optional PowerShell and battery are used with the Z1, the machine display shows the amount of power remaining in the battery using a battery icon with solid bars. When the battery is charging the bars in the battery icon flash.

    • 1 Solid bar = 10-25% charge remaining
    • 2 Solid bar = 25-50% charge remaining
    • 3 Solid bar = 50-75% charge remaining
    • 4 Solid bar = 75-100% charge remaining

    HME Compatibility Tips

    Machine: The Heat Moisture Exchange Unit for CPAP Machines is universal, and it is compatible with all CPAP, APAP, or BiPAP machines.

    Mask: 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. 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.

    Slim Style 15mm Tube: The Z1 CPAP Machine requires the use of a Slim Style, 15mm tubing. It comes packaged with a 4 Foot Slim Style tube. Alternatively, any 15mm 6 Foot tube may be used. Here are some examples of 15mm 6 Foot tubes: Respironics Pure White Thin 6 Foot Performance CPAP/BiPAP Tubing (15mm) and Thin Style 6 Foot BreatheLight Tubing.

    Length of HME Use: The manufacturer of the Z1 originally found the HME to only be suitable for one night's use, however after further research and testing it has been approved for up to seven night's usage. Be aware that some packaging and documentation may still state 24 hours, but all Z1 HME's may be used for up to 7 nights.

    Z-Breathe Settings: The pressure relief setting Z-Breathe can be set to 1, 2 or 3. Please Note: Z-Breathe CANNOT be turned off. Set to 1 to receive the lowest drop in pressure at the time of exhalation.

    OPTIONAL Small Carry Bag: The Z1 Travel CPAP does not include a carry bag. The Small Carry Bag is approximately 6 inches high by 5 1/2 inches wide by 5 inches deep and can hold the Z1 machine, power supply with outlet plug cord and hose adapter. It is padded on all sides including the top and has a removable shoulder strap, carry handle and belt handle. This bag WILL NOT hold a hose or mask.

    Display Showing "REMINDER": The LCD of the the Z1 Machine will display "REMINDER" when there is an excessive air leak. This may display when a hose or mask is not attached or if the hose or mask cushion is damaged. The machine setting menu cannot be entered if a hose is not attached to the machine.

    Not For Use With Supplemental Oxygen: The Z1 machine is NOT for use with supplemental oxygen or any other added gas. Do not use an oxygen tank or concentrator with the Z1 machine.

    Disposable Air Filter: The Z1 uses a disposable air filter. It should not be washed and reused. Install the filter prior to using the Z1 machine. The filter should be changed monthly and the used filter discarded.

    Z1 Button Design Change: The buttons on the front of the Z1 machine when through a design update in early June, 2014. The original style of machine button was a smooth surface with symbols printed in white on the button to indicate the function of the button. The updated button design features and embossed or raised symbol with no printing. The updated buttons are solid gray in color, no white printing. The two designs of buttons function the same. The updated design allows a user to determine the button function by touch in a darkened room.

    Solar Charge: At this time the Z1 Machine and PowerShell CANNOT be charged using solar power. The manufacturer is working towards a solar charge solution, an expected date is not available.

    • Contact us at or 1-800-356-5221 to receive an RMA (Return Merchandise Authorization) Number before returning the equipment
    • Include a note with the machine describing the issue you are experiencing, along with your full contact information to include a return shipping address and the RMA number provided to you
    • Ship only the defective items to at 13235 N Promenade Blvd Stafford, TX 77477
    • Do not return accessory items such as the carry bag, hose or power cords
    • Loaner Machines are available for rental during the warranty process
    • Email updates will be sent to keep you informed as the machine moves through the warranty process
    • will contact the manufacturer on your behalf and handle all shipping between us and the manufacturer
    • The repaired or replaced unit will be returned to you. Shipping charges may apply.

    Please note: The manufacturer warranty is voided by water damage or misuse of the machine.

    Power Options

    Z1 AC Power: The Z1 Travel CPAP includes the AC Power Supply for Z1 Travel CPAP Machine. The power supply is comprised of two parts:

    1. Power Supply with Cord
    2. AC Power Cord

    DC Power Options

    The Z1 can be powered through a car battery or boat battery by using the DC Power Cord for Z1 CPAP Machines. PLEASE NOTE: the DC Power Cord for the Z1 Machines is NOT compatible with the Freedom Battery. The only way to connect the Z1 to the Freedom Travel Battery is by using a 150 W Sine Wave Inverter (Sold Separately). The DC Power Cord listed here, connects to the cigarette lighter plug in a car or boat, and allows you to draw DC power from these devices.

    OPTIONAL Z1 PowerShell with Extended Life Battery

    Enjoy the freedom of integrated battery power with the Z1 PowerShell with Extended Life Battery. The Extended PowerShell connects the Z1 CPAP machine and the battery in a compact, portable bundle.

    Interested in a battery back up which kicks on in the event of a power failure? The Z1 machine and PowerShell offers it. Place the Z1 machine and battery in the PowerShell and plug into the wall outlet. The machine will be powered by the AC electricity, battery power will NOT be used. However, if there is a disruption in the AC power supply the battery power will automatically kick on to power the CPAP, creating a fail over system.

    Manufacturer tests showed the Overnight Battery included with the PowerShell powered the Z1 CPAP Machine set to a pressure of 14cmH2O for 8 hours of use. Actual battery run time will vary based on machine pressure, machine settings, and personal breathing, with a manufacturer reported maximum run time of 14 hours. Manufacturer reports the battery will deliver at least a "full night." Manufacturer defines "full night" as 4 hours. Replacement battery modules are available for purchase.

    The battery is charged in the PowerShell, with or without the machine in the shell. When charging the battery with the machine inserted into the shell the charge level is displayed on the machine's screen. Charging the battery without the machine in place does not provide information on the charge level. Please Note: The battery is NOT charging when the Z1 CPAP machine is turned on and blowing. The battery charges only when the machine is powered off.

    Freedom Battery with 150W Sine Wave Inverter:

    The Z1 Travel Machine is also compatible with the Freedom Travel Battery Pack ONLY if the 150W Sine Wave Inverter is purchased separately. The Z1 Machine cannot be used directly with the Freedom battery and requires an inverter; however, please keep in mind that using an inverter will reduce the battery's run time by half the projected amount.

    Replacement Parts

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