Appliances › Medical & CPAP

What size power station runs an oxygen concentrator?

A continuous, non-negotiable medical load — size with real headroom and a step-up unit.

350 Wrunning watts

600 Wstartup surge

100%duty cycle

3,111 Whfor 8.0 h

Need to run it alongside other things? Add it to the full sizing tool with the rest of your load.

What size you need for 8.0 h

You need about 3,111 Wh — and 4 units fit. The smallest sufficient is the EcoFlow DELTA Pro; we never push more capacity than your load can use. Surge to clear: 600 W.

The math
Running watts (everything on at once) = 350 W
Surge watts (worst single startup + the rest running) = 600 W
Average draw (cyclic loads counted by their duty cycle) = 350 W
Watt-hours = 350 W × 8.0 h ÷ 90% usable reserve = 3,111 Wh

EcoFlow DELTA Prosmallest that fits

3,600 Wh 3,600 W cont · 7,200 W surge expandable ~9.3 h on this load $$$

The whole-home contender on wheels — 3,600 W, expandable to 25 kWh, panel-ready with a transfer switch.

LiFePO4 · AC + EV charging; expandable to 25 kWh · 99 lb

Check price at EcoFlow → Full specs

Anker SOLIX F3800

3,840 Wh 6,000 W cont · 9,000 W surge expandable ~9.9 h on this load $$$

A 6,000 W, 240 V system for whole-home backup including a well pump and electric range, expandable to ~27 kWh.

LiFePO4 · 120/240 V; expandable to 26.9 kWh · 132 lb

Check price at Anker SOLIX → Full specs

Goal Zero Yeti PRO 4000

3,993 Wh 3,600 W cont · 7,200 W surge expandable ~10 h on this load $$$

Goal Zero’s LiFePO4 flagship — 4 kWh, 3,600 W, whole-home with the transfer switch and tanks.

LiFePO4 · Fast AC; expandable to ~27 kWh · 104 lb

Check price at Goal Zero → Full specs

EcoFlow DELTA Pro 3

4,096 Wh 4,000 W cont · 8,000 W surge expandable ~11 h on this load $$$

A 4 kWh, 4,000 W (120/240 V) system built specifically for whole-home backup.

LiFePO4 · AC/solar/EV; expandable to 48 kWh · 113 lb

Check price at EcoFlow → Full specs

🔗 The "Check price" buttons are brand-direct affiliate links. Once our brand affiliate programs are approved these will earn a commission — at no extra cost to you, and it never changes which unit we recommend. Disclosure.

Can a specific unit run an oxygen concentrator?

28 of the units we track deliver enough watts to run an oxygen concentrator. Check a specific one for the runtime and the full verdict:

677 Wh · 1,000 W cont

768 Wh · 1,000 W cont

runs it

Anker SOLIX C800

768 Wh · 1,200 W cont

runs it

Goal Zero Yeti 1000 Core

983 Wh · 1,200 W cont

runs it

EcoFlow DELTA 2

1,024 Wh · 1,800 W cont

runs it

Anker SOLIX C1000

1,056 Wh · 1,800 W cont

runs it

Jackery Explorer 1000 v2

1,070 Wh · 1,500 W cont

runs it

Common questions

What size power station do I need to run an oxygen concentrator?

An oxygen concentrator draws about 350 W running, with a startup surge near 600 W. So you want a unit with at least 350 W continuous output and 600 W+ surge. For 8.0 h of runtime that's roughly 3,111 Wh of capacity — the EcoFlow DELTA Pro is the smallest unit that clears all of it.

How many watts does an oxygen concentrator use?

About 350 W while running, spiking to roughly 600 W on startup.

Sources: Oxygen Concentrator wattage — Standard appliance-wattage / generator-sizing charts (representative values; verify your nameplate); station specs — manufacturer published specifications (compiled 2026-06-15; approximate). Informational only — a computed sizing estimate from published appliance-wattage charts and manufacturer station specs. It is not an electrical guarantee. For hardwired or whole-home backup, transfer switches, or any permanent install, consult a licensed electrician.