A travel CPAP is a second machine, light enough to throw in a carry-on, that runs the same auto-CPAP therapy as your bedside unit. In the US the choice comes down to two models: the ResMed AirMini and the Transcend Micro 510.
Head to head
| Transcend Micro 510 | ResMed AirMini AutoSet | |
|---|---|---|
| US price (cpap.com) | $829 | $919 |
| Pressure range | 4–20 cmH₂O | 4–20 cmH₂O |
| Weight | 0.48 lb (223 g) | 0.3 kg |
| Sound | 27 dBA | 27 dB |
| Humidification | AirMist HME (waterless), included | Waterless only |
| Masks | Universal mask compatibility | AirMini-specific mask kits / setup packs |
| Battery | Optional PowerAway battery | Not compared |
| Max altitude | 8,000 ft | Not compared |
| Warranty | 3 years | Not compared |
Prices are cpap.com’s listed cash prices on 13 October 2026 (Micro 510, AirMini). ResMed’s own shop also listed the AirMini at $919. Micro 510 specs are from Transcend’s product page and its user manual. AirMini specs are as published by ResMed. HHZ didn’t measure either.
Transcend Micro 510: best for most travelers
Transcend’s comparison table lists “Universal Mask Compatibility” for the 510, so you can take your usual mask. The 510 also includes a hard-shell travel case, the AirMist waterless humidification adapter, a muffler, and standard and hypoallergenic filters. It is compatible with the PowerAway battery (Transcend). Its user manual gives a 5-year design life and says the device is for adults weighing over 66 lb (30 kg).
Trade-offs: an 8,000 ft maximum altitude, which matters for high mountain towns, and no water humidifier.
ResMed AirMini: best if you’re already on ResMed
The AirMini covers the same 4–20 cmH₂O range. Its catch is masks: ResMed sells AirMini-specific mask kits and setup packs for the P10, N20, N30 and F20 (ResMed shop). cpap.com notes the AirMini version of the P10 “is compatible with the AirMini AutoSet Travel CPAP Machine only” (cpap.com). If you already use one of those masks at home, a matching AirMini kit keeps the fit you know. ResMed listed the P10 kit at $165 and the F20 kit at $211 on 13 October 2026.
Flying with a CPAP
- Screening. TSA allows CPAPs, BiPAPs and APAPs in carry-on and checked bags. In standard screening, the machine, mask and tubing may stay in the carrying case for X-ray, but you may have to take them out of your carry-on. In PreCheck they can stay in the carry-on. Devices with lithium batteries should be carried in carry-on (TSA).
- Carry-on limits. Under 14 CFR 382.121, airlines must let passengers with a disability bring assistive devices into the cabin, and must not count them toward carry-on limits.
- In-flight use. Transcend’s manual says the 510 meets FAA requirements for in-flight use and asks you to put it in airplane mode (Bluetooth off). Compliance letters are on Transcend’s website. Check in-flight use and power with your airline before you fly.
- Oxygen users. If you also travel with oxygen, see FAA rules for portable oxygen concentrators.
Paying for a travel unit
Medicare and most insurers cover one machine. A travel CPAP is usually a cash purchase, and it’s a common HSA/FSA purchase (eligibility guide). Both machines need a prescription before they ship.
Verdict
Buy the Transcend Micro 510 if you want the lighter, cheaper machine that works with the mask you already own. Buy the AirMini if you already use a ResMed P10, N20, N30 or F20 and want the matching kit. Either way, keep your full-size machine with its heated humidifier for home. Our auto CPAP guide and DreamStation alternatives cover the home machine.
Power off the grid
For batteries, DC converters and FAA battery limits, see CPAP batteries and camping power.
Model reviews: ResMed AirMini, Transcend Micro 510.
See also: Flying with a CPAP: TSA rules.