Inogen One: Where to Buy
The Inogen One is a portable oxygen concentrator (POC), a compact, battery-powered device that pulls oxygen from the surrounding air and delivers it through a cannula, the thin nasal tube used in most oxygen therapy systems. It replaces the heavy tanks that once tied patients to a chair or a refill schedule.
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Roughly 1.5 million Americans use supplemental oxygen every day, according to the American Lung Association, the leading nonprofit for lung health in the United States. Many still haul stationary systems or refillable tanks that weigh 15 pounds or more. The G4 model weighs under three pounds; the larger G5 stays below five. Both are FAA-approved for air travel, fit in a carry bag or backpack, and run on rechargeable electric battery cartridges that last three to thirteen hours depending on the setting.
The brand reached most buyers through direct-response television, the same infomercial channel where plenty of gadgets overpromise. This one is a real FDA-cleared medical device. Here is what each model does and where to buy it without voiding the warranty.
Inogen One models compared: G4, G5, and Rove 6
Three configurations cover most needs. The Inogen One G4 is the featherweight for low flow settings, the Inogen One G5 is the versatile workhorse, and the newer Inogen Rove 6 pushes battery life and delivery further. All use pulse dose delivery, which sends a measured burst of oxygen on each inhalation instead of a continuous stream measured in liters per minute.
| Feature | G4 | G5 |
|---|---|---|
| Weight (single battery) | 2.8 lbs | 4.7 lbs |
| Flow settings | 1 to 3 | 1 to 6 |
| Battery life range | Up to 3 hrs (setting 3) | Up to 13 hrs (setting 1, double) |
| FAA approved | Yes | Yes |
| Noise level | ~40 dB | 38 to 42 dB |
The Rove 6 refines breath detection and stretches runtime past the G5, aimed at people who travel often or stay active. Pricing generally starts around $3,000 to $3,500. The lighter Rove 4 fills the budget-conscious slot if you do not need peak output.
How to choose the right concentrator
Match the machine to your prescription first, then to your lifestyle. Four factors decide it:
- Flow setting. The G4 tops out at setting 3. If your physician prescribes 4 or higher, only the G5 (settings 1 to 6) or Rove 6 can deliver it. Confirm your number before you shop.
- Battery life and cartridges. Both accept a single (8-cell) or double (16-cell) battery. A G5 on a double battery reaches past 13 hours at setting 1. An external battery charger lets you rotate cartridges without powering down.
- Weight and portability. At 2.8 pounds, the G4 is one of the smallest units sold. The G5, at 4.7 pounds, trades a little heft for higher flow and longer runtime.
- Power supply. Every unit ships with an AC power supply for home use. A DC power cable charges from a vehicle’s 12-volt outlet, so you stay powered on the road.
In our experience comparing portable oxygen concentrators, buyers overbuy on battery packs and underthink flow. Get the flow setting right first. Everything else is convenience.
Mistakes to avoid when buying a portable oxygen concentrator
The costliest error is buying from an unauthorized seller. That one choice can void the entire warranty and leave you paying full price to repair a machine that runs into the thousands.
Skipping prescription verification. Every medical-grade concentrator requires a valid prescription. A legitimate retailer checks it before shipping. A seller that ships without asking is a red flag, because the unit may be refurbished, stolen, or gray-market stock the manufacturer will not service.
Chasing the lowest price. Used units on eBay can run 40% to 60% cheaper, but the sieve beds, the internal columns that separate oxygen from ambient air, wear out. A tired unit can deliver below its rated oxygen concentration, and replacement sieve beds cost $300 to $500. Factor that into any secondhand deal.
Where to buy the Inogen One
These concentrators rarely sit on a store shelf. Most sales run through authorized medical channels, online and in person. Pricing below reflects common package ranges; verify seller authorization before you check out.
The official site (Inogen.com). Buying from the manufacturer guarantees a genuine product with full warranty coverage and phone access to an oxygen specialist for setup. Prices run higher than resellers, but you avoid coverage disputes.
Amazon. Fast shipping, verified reviews, and easy returns, with several configurations in 8-cell and double-battery trims. The catch: not every Amazon seller is an authorized dealer, which can void coverage if something breaks. Check the seller name first. Check price on Amazon.
Specialty dealers. LPT Medical, Main Clinic Supply, and Portable Oxygen Solutions carry the full lineup with bundled accessories, free shipping, and financing. Compare total package value, not base price, since a carry bag, shoulder strap, DC adapter, and external battery charger can add $500 or more bought separately.
Local HME providers. Home medical equipment stores employ oxygen specialists who handle insurance paperwork, demo the device in person, and coordinate with your doctor. Call ahead, since some carry competing brands exclusively.
On price, a G4 starter kit with an 8-cell battery and AC power supply typically runs $2,200 to $2,800. A loaded G5 travel system with carry bag, external battery charger, and every cable ranges from $2,800 to $3,695. The discontinued G3 still turns up used for $1,200 to $1,800, a reasonable backup if you verify the serial number and sieve bed condition with the manufacturer first.
Warranty, insurance, and ownership costs
Coverage depends on where you buy. Units from an authorized dealer usually carry a 3-year manufacturer warranty on the concentrator plus a lifetime guarantee on certain structural parts. Purchases from unauthorized or secondary sellers may not qualify for any service, so confirm what is covered, how to file a claim, and the return window (most authorized sellers allow 30 days) before you pay.
Medicare and private insurance sometimes cover a portable concentrator when a physician prescribes it and an HME provider coordinates the paperwork, though coverage often applies to rental rather than purchase. Call your insurer before ordering.
Budget for upkeep too: replacement particle filters ($15 to $25 every few months), cannulas ($10 to $20), sieve bed replacement ($300 to $500 every 18 to 24 months), and spare batteries ($395 to $575 each). Heavy travelers should plan on an extra battery and an external charger ($275 to $325). Expect $200 to $500 a year in supplies overall.
Confirm your prescribed flow setting with your doctor, then compare at least three authorized dealers for the Inogen One that fits your needs: the G4 if every ounce counts, the G5 or Rove 6 for higher flow or longer runtime. Buy from an authorized source, and you protect the warranty that makes this device worth the price.
Where to Buy the Inogen One
The Inogen One is sold on Amazon and through major retailers. Compare current prices on the most popular options below. As an Amazon Associate, allfromtv.com earns from qualifying purchases.
- Inogen One G5: Check price on Amazon
- Inogen One G4: Check price on Amazon
- Inogen Rove 6: Check price on Amazon
Frequently asked questions
Do I need a prescription for an Inogen One?
Yes. A valid prescription from a licensed physician is required for every medical-grade portable oxygen concentrator. Authorized retailers verify it before shipping, and some coordinate directly with your doctor to handle the documentation.
How much does an Inogen One cost without insurance?
Prices range from about $2,200 for a basic G4 starter kit to $3,695 for a fully loaded G5 travel bundle with double battery, backpack, external charger, and cables. The discontinued G3 appears on secondary markets for $1,200 to $1,800. Verify warranty status and seller authorization before buying used.
What is the lawsuit against Inogen?
Inogen has faced shareholder lawsuits tied to accounting practices and revenue reporting, not product defects. These are corporate governance matters within the United States, not safety concerns about the concentrators. The devices keep their FDA clearance and still sell through the same authorized channels.
Can it be purchased directly, or do I need a dealer?
Both. You can buy from the manufacturer website or through any authorized dealer, online or in person. Direct purchases usually include guaranteed coverage and setup help from an oxygen specialist, while third-party authorized dealers often offer stronger bundle pricing.
What is the newest Inogen model?
The Rove 6 is the newest high-performance portable oxygen concentrator, with refined breath detection and better battery life than the G5. The lighter Rove 4 is its more affordable companion. Both are FAA-approved and sold through authorized dealers.
Can I use the G4 while sleeping?
Many users run the G4 at night, but consult your physician first. Pulse dose delivery works differently from continuous flow, and breathing patterns during sleep can affect intake. Some prescriptions specify continuous flow at night, which calls for a home oxygen concentrator rather than a portable unit.
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Reviewed by the allfromtv.com editorial team. Medically reviewed with guidance from respiratory therapy and pulmonary medicine sources. Last updated: April 2026.