Inogen One Portable Oxygen Concentrator: Models, Costs and Where to Buy
The Inogen One is a portable oxygen concentrator (POC), a battery-powered medical device that pulls oxygen from room air and delivers it through a cannula, the thin nasal tube used in most oxygen therapy setups. Sold by prescription only, it replaces the heavy tanks that once tied patients to a chair or a refill schedule.
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About 1.5 million people in the U.S. rely on supplemental oxygen, a figure cited by the American Lung Association, the leading nonprofit for lung health in the United States.
The brand leans on direct consumer advertising, the same infomercial territory where plenty of gadgets overpromise. Unlike most entries on our best infomercials of all time list, this is an FDA-cleared medical device. The company began selling direct to patients in 2009, and direct sales and rentals made up about 62% of its 2024 U.S. revenue, per its 2024 annual report (Form 10-K).
What the Inogen One name covers in 2026
“Inogen One” is the family name for the company’s G-series oxygen concentrators: the G3, G4 and G5. Newer models carry the Rove name. The manufacturer’s site says the Rove 6 replaces the Inogen One G5, and the Rove 4, a four-setting unit under 3 pounds, was FDA-cleared in December 2022 and launched in 2024. The Inogen One G3 is gone from the current lineup; the G4 still has an active product page.
So a listing titled with the family name may be a new G4, leftover G5 stock, a certified pre-owned unit, or a Rove. Check the model number before comparing prices.
How pulse dose oxygen delivery works, and when it falls short
Pulse dose is a delivery method that releases a measured burst of oxygen only when a sensor detects you inhaling, instead of a steady stream measured in liters per minute (LPM). A compressor pushes room air through sieve beds, zeolite columns that trap nitrogen, so oxygen delivery continues without a tank.
A flow setting is not a liter number. Setting 2 on this brand does not deliver the same bolus as setting 2 on another maker’s unit. Every model in the family is pulse-only, so if your respiratory plan calls for continuous flow (for example overnight alongside a CPAP), ask your prescriber about home oxygen concentrators or a dual-mode unit such as the Philips Respironics SimplyGo.
Inogen One G4 vs G5 vs Rove 6: specs side by side
| Spec | G4 | G5 | Rove 6 |
|---|---|---|---|
| Weight (standard battery) | 2.8 lbs | 4.7 lbs | 4.8 lbs |
| Pulse settings | 1 to 3 | 1 to 6 | 1 to 6 |
| Battery life, setting 1 | 2.7 hrs single, 5 hrs double | 6.5 hrs single, 13 hrs double | 6.25 hrs standard, 12.75 hrs extended |
| Noise at setting 2 | 40 dBA | 38 dBA | 39 dBA |
| Status (Oct 2026) | Still listed | Replaced by Rove 6 | Current |
Per the manufacturer’s spec sheets, the Rove 6 is not a runtime upgrade: its extended battery is rated slightly below the G5 double battery. The 2025 annual report says the Rove 6 and Inogen One G5 are built to run up to 96 months at up to eight hours a day, a yardstick for judging a used unit.
Matching a model to your prescribed flow setting
- Setting 3 or lower. The Inogen One G4 is the lightest G-series model and tops out at setting 3. The Rove 4 adds a fourth setting at a similar weight.
- Setting 4 to 6. Only the Inogen One G5 portable oxygen concentrator or the Rove 6 reaches these settings, trading about two extra pounds for higher oxygen output.
- All-day outings. The G5 takes a single battery (8-cell) or a double battery (16-cell). The 16-cell battery is rated for up to 13 hours at setting 1.
- Sleep. Shallow or mouth breathing can miss the pulse trigger, so ask your physician whether a portable oxygen concentrator fits your overnight needs.
Battery life, charging and the Inogen Connect app
Battery life is rated at setting 1, so a patient on setting 4 gets far less than the headline number. An AC power supply runs and charges the unit at home, and a DC power cable charges it from a car’s 12-volt outlet. As of October 2026, the official store lists the G5/Rove 6 extended battery at $618 and an external charger at $342, so a spare is a real line item. The Inogen Connect mobile app shows battery status and alerts on a phone.
Flying with an Inogen One: FAA rules and airline steps
The manufacturer states its portables are approved for use on airplanes, and the Federal Aviation Administration rule for POCs requires enough battery power for the trip. FAA acceptance does not get you on board by itself, because each airline sets its own procedure:
- Call the airline at least 48 hours before departure; some carriers still ask for a physician statement.
- Carry enough battery for 150% of the expected flight time, a common airline policy that covers delays.
- Pack spare lithium-ion batteries in your carry-on with terminals protected, never in checked bags.
Medicare, warranty and upkeep
Medicare Part B covers oxygen equipment as a 36-month rental from an enrolled supplier, and you pay 20% of the Medicare-approved amount after the Part B deductible (see Medicare’s oxygen equipment rules). Your doctor must document the need for oxygen therapy, usually with blood gas results.
The manufacturer lists a 3-year or lifetime warranty on the concentrator, with sieve beds and accessories covered for 1 year. Sieve columns wear with use; a G5/Rove 6 column kit is $118 on the official store.
Where to buy a new or certified pre-owned unit
Buy from an authorized seller. Units from unauthorized sellers may not qualify for warranty service, and a seller that skips prescription checks may be moving gray-market stock. As of October 2026, the official site lists the Rove 6 from $2,795 and the Rove 4 from $2,995.
- Official site (Inogen.com): full warranty, a 30-day trial offer and financing.
- Amazon: fast shipping, but not every seller is an authorized dealer, so check the seller name. Check price on Amazon.
- Specialty dealers: LPT Medical, Main Clinic Supply and Portable Oxygen Solutions sell bundles and certified pre-owned stock.
- Local HME providers: handle insurance paperwork and in-person setup.
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- G5: Check price on Amazon
- G4: Check price on Amazon
- Rove 6: Check price on Amazon
Start by confirming your prescribed pulse setting with your doctor. Then match the Inogen One portable concentrator to it: the G4 or Rove 4 if weight matters most, the G5 or Rove 6 for settings above 3. If you fly often, call your airline before buying extra batteries.
Frequently asked questions
Do I need a prescription for an Inogen One?
Yes. Every Inogen One portable oxygen concentrator is a prescription device, and the manufacturer requires a qualifying prescription before a unit ships. Authorized dealers ask for one too.
How long does the battery last on an Inogen One?
At setting 1, the G4 is rated for up to 5 hours and the G5 for up to 13 hours, both on a double battery. Higher settings shorten every figure.
Is the Inogen One covered by Medicare?
Medicare Part B can cover a portable unit as rented oxygen equipment when you meet its medical criteria. It runs as a 36-month rental from an enrolled supplier, with 20% coinsurance after the deductible.
What is the lawsuit against Inogen?
In 2019, shareholders filed a securities class action against the company and two executives in federal court in California over statements made to investors. The court dismissed the case in 2021, according to the company’s SEC filings.
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Written and fact-checked by the allfromtv.com editorial team. Last updated: October 2026.