Travel and power
Traveling Abroad with a CPAP: Voltage, Plugs and Water
Most modern CPAP power supplies accept 100 to 240 volts at 50 or 60 Hz, so abroad you usually need only a plug adapter, not a voltage converter. Check the label on your power supply, plan for distilled or drinking quality water, and know that your machine's data may not upload until you return home.
Check your power supply
Look at the input rating on your power supply brick or in the specs. ResMed lists the AirSense 11 power supply as 100 to 240 V, 50 to 60 Hz. Philips lists the DreamStation 2 AC power consumption as 100 to 240 VAC, 50/60 Hz.
If your supply says 100 to 240 V, a simple plug adapter for the country's outlet shape is enough. Do not use a cheap travel voltage converter with a CPAP unless the manufacturer says it is safe.
Plugs and power cords
Pack a plug adapter for each country you visit. ResMed says to make sure you have the appropriate power cord for the region you are traveling to and to ask your care provider about buying one.
Bring a short extension cord or power strip that works at the destination voltage if outlets are far from the bed.
Water abroad
Distilled water can be hard to find in some countries. Look for it in pharmacies or supermarkets, sometimes labeled demineralized or for irons and car batteries; check that the label lists no additives.
If your tub requires distilled water and you cannot find it, running without humidification is an option on many machines. A waterless HME is another option on machines that support it.
Altitude
ResMed lists the AirSense 11 operating altitude as sea level to 3,010 m (about 9,875 ft). Very high destinations can be outside the operating range of some devices, so check your manual.
Breathing problems at high altitude are a medical issue. If you have lung or heart disease, talk to your clinician before traveling high.
Data and connectivity
Cellular modems may not work abroad. ResMed's support FAQ for its AirSense 10 and AirCurve 10 notes that if data cannot be transmitted, the device stores it and transmits it when you return to an area with coverage.
If you are in a compliance period, tell your supplier before you go.
Supplies that can help
A padded bag that protects the machine, mask, tubing and power supply in transit.
Distilled water is what most CPAP humidifier chambers are meant to be filled with, because it leaves little or no mineral scale behind.
A heat and moisture exchanger (HME) that captures warmth and moisture from your breath and returns it on the next breath, used mostly with travel CPAPs …
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Frequently asked questions
Do I need a voltage converter for my CPAP in Europe?
Usually not. If your power supply is rated 100 to 240 V, as the AirSense 11 and DreamStation 2 supplies are, you only need a plug adapter.
Will my CPAP work in the UK or Australia?
If the power supply is rated 100 to 240 V, yes with the right plug adapter or a regional power cord from the manufacturer.
What if I cannot find distilled water abroad?
Check your manual. Some tubs allow drinking quality water; otherwise you can turn humidification off. Clean the tub more often if you use non distilled water.
Will my CPAP data upload while I am overseas?
Possibly not. Machines generally store data and upload it when back in coverage, so warn your supplier if you are in an insurance compliance window.
Sources
Last reviewed October 11, 2026. How we research · Report an error