Cpap Machines
Travel Cpap Machines
BiPAP (Bi-Level) Machines
Nasal Masks
Nasal Pillow Masks
Full Face Masks
Apex Medical
Beyond Medical
Breas
Drive Medical
Fisher & Paykel
Hybernite
Medistrom
Movair
Philips Respironics
React Health
Transcend Healthcare
Portable
Home-Use 
Cpap Batteries
CPAP Power Supplies 
Cpap Filters
Cpap HumidifiersHDM Z2 Auto vs. Transcend Micro 510 Auto — The Ultimate Travel CPAP Showdown
Both the HDM Z2 Auto and the Transcend Micro 510 Auto are elite travel CPAPs built for therapy on the go. But they take different approaches — here's how to choose.
Quick Comparison
| Feature | HDM Z2 Auto | Transcend Micro 510 Auto |
|---|---|---|
| Price | $725 | $829 |
| Weight | 10.4 oz (0.65 lbs) | 7.7 oz (0.48 lbs) ✅ |
| Pressure Range | 4–20 cmH₂O | 4–20 cmH₂O |
| Noise Level | 26 dBA ✅ | 27 dBA |
| Humidification | Waterless HME | Waterless HME (AirMist) |
| FAA Approved | ✅ | ✅ |
| Battery Option | PowerShell® add-on | PowerAway™ add-on |
| App | Nitelog® (free) | Bluetooth compatible |
| Warranty | 2 years (device) | 3 years ✅ |
| Colors | Gray | 4 colors ✅ |
| Made in USA | ✅ (Massachusetts) | ✅ (Minnesota) |
HDM Z2 Auto — Best For...
The Z2 Auto is the better pick if you want a proven integrated battery ecosystem (PowerShell®) and a dedicated companion app (Nitelog®). At $725 for the machine alone or $1,189 as a bundle with the PowerShell® Extended Life Battery, it covers both budget-conscious travelers and those who need all-night cordless therapy. Its Z-Breathe® comfort algorithm and quieter 26 dBA rating make it ideal for sensitive sleepers and travel partners alike. Built in Massachusetts by HDM.
Shop the HDM Z2 Auto — $725
Shop the Z2 Auto + PowerShell® Battery Bundle — $1,189
Transcend Micro 510 Auto — Best For...
The Transcend Micro 510 Auto wins on pure portability and style — at under half a pound it's the lightest option on the market, and it comes in 4 colors (Birch White, Midnight Blue, Petal Pink, Graphite Gray). The 27 dBA noise rating is one of the quietest available, and the 3-year warranty gives it a clear edge over the Z2's 2-year coverage. Includes a hard-shell travel case. Built in Fridley, Minnesota by Somnetics International.
Shop the Transcend Micro 510 Auto — $829
Frequently Asked Questions
Can I use either machine on a plane?
Yes — both are FAA approved for in-flight use.
Do these machines have heated humidifiers?
Neither uses a traditional heated humidifier. Both use waterless HME (Heat Moisture Exchanger) technology, which is ideal for travel since there's no water tank to fill or spill.
Which is quieter?
The Z2 Auto is rated at 26 dBA, edging out the Transcend Micro 510 at 27 dBA — both are extremely quiet, but the Z2 has a slight edge for the most noise-sensitive sleepers.
What warranty does each machine come with?
The Z2 Auto comes with a 2-year manufacturer's warranty on the device (1 year on the PowerShell® battery, 6 months on the Extended Life Battery). The Transcend Micro 510 Auto includes a 3-year manufacturer's warranty.
Are both machines made in the USA?
Yes — both are proudly made in the USA. The Z2 Auto is manufactured in Massachusetts by HDM, and the Transcend Micro 510 Auto is assembled in Fridley, Minnesota by Somnetics International.
Can I add a battery to either?
Yes. The Z2 uses the PowerShell® Extended Life Battery (available as a $1,189 bundle). The Transcend Micro 510 is compatible with the Transcend Micro PowerAway™ Battery.
Still Not Sure? Talk to a CPAP Expert
We're here to help you find the right machine for your therapy needs. Contact us and we'll point you in the right direction.
