For the estimated 1 billion people worldwide living with sleep apnea, a CPAP or BiPAP machine is essential — including on vacation. The good news for international travelers: virtually all modern CPAP machines are designed with global travel in mind. Most are dual voltage, compact, and airline-approved. With the right preparation, using your CPAP anywhere in the world is straightforward. This guide covers everything you need to know.
Is My CPAP Machine Dual Voltage?
Most modern CPAP and BiPAP machines — from ResMed, Philips Respironics, Fisher & Paykel, and DeVilbiss — are dual voltage rated 100–240V at 50/60Hz. This means they work automatically in any country worldwide with only a plug adapter for the local socket. No voltage converter needed.
To confirm your machine's voltage rating, check the power supply label (often on the underside of the machine or on the external power brick). Look for "INPUT: 100–240V". If you see only "120V" or "110–120V", your machine is single-voltage and requires a step-up/step-down converter for use in 220–240V countries like Europe, the UK, and Australia.
✓ How to check in 10 seconds: Look at the bottom or back of your CPAP machine or its power supply. If the label reads "100–240V", it's dual voltage and works anywhere with just a plug adapter. If it reads "120V only", you need a converter for international use.
Popular CPAP Models: Voltage Reference
⚠ Humidifier water internationally: Do not use tap water in your CPAP humidifier abroad. Use bottled distilled water, or order distilled water at your accommodation. Tap water mineral content can damage the humidifier. Alternatively, disable the humidifier while traveling — most CPAP users adapt without it for short trips.
Airlines and CPAP: What to Know
CPAP machines have special status with most airlines:
- Extra carry-on allowance — Most major airlines (including United, Delta, American, British Airways, Lufthansa, Emirates) allow a CPAP machine as a free additional carry-on item beyond your standard allowance. Confirm with your airline before travel.
- Never check a CPAP — Always carry your CPAP in the cabin. Checked luggage can experience extreme temperatures and rough handling that damage sensitive electronics.
- TSA / security screening — CPAP machines must be removed from bags and screened separately at US TSA checkpoints. Keep the machine in an accessible bag.
- Humidifier water restrictions — Water in the humidifier is subject to the standard 100ml liquid limit. Empty the humidifier before passing through security.
- In-flight use — Permitted on most long-haul flights with advance notice. Ask your airline about in-seat power availability for your route.
Powering Your CPAP Off-Grid: Camping & Remote Travel
For camping trips, liveaboard boats, remote lodges, or any situation without standard wall power, a CPAP battery pack is essential:
- CPAP-specific battery packs (Medistrom Pilot-24, ResMed Power Station II) — Designed for overnight CPAP use. Typically provides 1–2 nights of use depending on pressure settings and humidifier use.
- Portable power stations (Jackery, EcoFlow, Anker SOLIX) — Larger capacity lithium battery units with AC outlets. Can power CPAP for multiple nights. Heavier but rechargeable from solar panels.
- DC power cables — Many CPAP machines (particularly ResMed and Transcend models) support 12V/24V DC power directly from car batteries, boat power, or DC adapters, bypassing the AC/DC converter for improved efficiency.
- Disable the humidifier — Running a CPAP without the humidifier reduces power consumption by 30–50%, significantly extending battery run time.
CPAP Travel Checklist
For full plug type and voltage information for your destination, use our interactive voltage checker. If you're also traveling with a laptop or phone and want to simplify your charging kit, see our USB-C travel charging guide. For general device compatibility, see our electronics compatibility guide.