Is Phoenix too hot for a CPAP machine?

Indoors with air conditioning, no. But ResMed rates the AirSense 11 and AirCurve 11 for operating temperatures up to 95°F, and Phoenix's normal daily high is above that from June through September (104.2°F in June, 106.5°F in July), per NOAA's 1991–2020 normals.

Can I leave my oxygen concentrator in a hot car in Phoenix?

Storage and operating ranges differ. Inogen's Rove 6 manual lists −13 to 158°F for shipping and storage, but operation only up to 104°F, so let a hot device cool into its operating range before using it.

What temperature can portable oxygen concentrators run at?

The manuals we've read list up to 104°F for the Inogen Rove 4 and Rove 6, CAIRE FreeStyle Comfort and Oxlife Independence. Phoenix averages 21 days a year at or above 110°F (1991–2020), per the National Weather Service.

How many 100-degree days does Phoenix get?

An average of 111 days a year at or above 100°F in 1991–2020, per NWS Phoenix. NWS also lists an average of 21 days at or above 110°F, with the average first 110°F day on June 11 and the last on August 26.

What should I do in a summer power outage?

Have a plan for power-dependent medical devices and go to a community location with power if the heat is extreme, per Ready.gov. See our power outage guide.

CPAP and oxygen in Phoenix heat (2026)

Published October 13, 2026 Reviewed October 13, 2026 3 min read By HHZ Editorial Next review April 13, 2027

Phoenix's normal daily high is above 95°F from June through September (106.5°F in July), and the city averages 111 days a year at or above 100°F. That exceeds the 95°F operating limit ResMed lists for the AirSense 11 and AirCurve 11, and the 104°F limit in the portable oxygen concentrator manuals we've read. Run equipment in an air-conditioned room, don't operate it in a hot car, and let it return to its operating range before use. Sources: NOAA, NWS Phoenix and manufacturers' manuals.

Sources: NOAA NCEI 1991–2020 monthly normals for Phoenix Sky Harbor; NWS Phoenix historical extreme temperatures; manufacturers’ manuals linked below. HHZ didn’t test devices in heat.

Phoenix temperatures (Sky Harbor, 1991–2020)

Month	Normal high	Normal low
May	94.5°F	69.5°F
June	104.2°F	78.6°F
July	106.5°F	84.5°F
August	105.1°F	83.6°F
September	100.4°F	78.1°F
October	89.2°F	65.6°F

NWS Phoenix (1991–2020): an average of 111 days a year at or above 100°F and 21 days at or above 110°F. Sky Harbor’s station elevation is 337.4 m (about 1,107 ft), so altitude isn’t a concern here.

Device operating limits vs Phoenix

Device	Max operating temperature	Source
ResMed AirSense 11	95°F	User guide
ResMed AirCurve 11	95°F	User guide
ResMed AirMini	95°F	User guide
React Health G3 X	95°F	Manual
Inogen Rove 4 / Rove 6	104°F	Rove 4, Rove 6
CAIRE FreeStyle Comfort	104°F	Manual
Oxlife Independence	104°F	Manual
CAIRE Companion 5	104°F	Manual
DeVilbiss 1025DS	95°F	Manual

Every month from June to September has a normal high above the CPAP limit, and July and August normals exceed the POC limit too.

Practical steps

Situation	What the documents support
Using CPAP at night	Indoors in air conditioning; Phoenix’s normal summer lows (78–85°F) are within the 95°F limit
Using a POC outdoors in summer	Above 104°F you’re outside the manuals’ operating range; plan shade, air-conditioned stops and your clinician’s advice
Leaving devices in a car	The Rove 6 and AirSense 11 manuals list storage to 158°F, but operation only to 104°F and 95°F; let the device cool before use
Rainout from cold air conditioning	Heated tubing and Climate Control (ClimateLineAir explained, CPAP rainout)
Summer outages	Ready.gov advises a plan for power-dependent medical devices (power outage plan)

Verdict

Phoenix heat is mainly a problem for equipment used outdoors or in vehicles. Keep CPAP and home concentrators in air-conditioned rooms, treat 104°F as the outer limit for most portable concentrators and 95°F for CPAP machines, and have an outage plan for the summer.

Frequently asked questions

Is Phoenix too hot for a CPAP machine?: Indoors with air conditioning, no. But ResMed rates the AirSense 11 and AirCurve 11 for operating temperatures up to 95°F, and Phoenix's normal daily high is above that from June through September (104.2°F in June, 106.5°F in July), per NOAA's 1991–2020 normals.
Can I leave my oxygen concentrator in a hot car in Phoenix?: Storage and operating ranges differ. Inogen's Rove 6 manual lists −13 to 158°F for shipping and storage, but operation only up to 104°F, so let a hot device cool into its operating range before using it.
What temperature can portable oxygen concentrators run at?: The manuals we've read list up to 104°F for the Inogen Rove 4 and Rove 6, CAIRE FreeStyle Comfort and Oxlife Independence. Phoenix averages 21 days a year at or above 110°F (1991–2020), per the National Weather Service.
How many 100-degree days does Phoenix get?: An average of 111 days a year at or above 100°F in 1991–2020, per NWS Phoenix. NWS also lists an average of 21 days at or above 110°F, with the average first 110°F day on June 11 and the last on August 26.
What should I do in a summer power outage?: Have a plan for power-dependent medical devices and go to a community location with power if the heat is extreme, per Ready.gov. See our power outage guide.

CPAP and oxygen in Phoenix heat (2026)

Phoenix temperatures (Sky Harbor, 1991–2020)

Device operating limits vs Phoenix

Practical steps

Verdict

Frequently asked questions

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Phoenix temperatures (Sky Harbor, 1991–2020)

Device operating limits vs Phoenix

Practical steps

Verdict

Frequently asked questions

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