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Inogen One G3 Portable Oxygen Concentrator

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Inogen One G2 & G3 Comparison
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Inogen One G3
Portable Weight
8 lbs 4.9 lbs
Size (in inches)
9.5 high
10.7 wide
3.9 deep
7.25 high
8.75 wide
3 deep
Flow Settings
Battery Duration Continuous Flow
Pulse Flow Only - No Continuous Flow
Battery Duration Pulse Settings 1-2-3
(with double battery)
1 = 8 hrs
2 = 7-8 hrs
3 = 6-7 hrs
(with double battery)
1 = 8 hrs
2 = 7-8 hrs
3 = 6-7 hrs
Sound Levels
38 dBA 42 dBA
Will the unit run in the car?
Yes, all
pulse settings
Yes, all
pulse settings
Will the battery charge in the car?
Yes Yes
FAA Airline Approved
Yes Yes
Factory Warranty
3 Years 3 years

Inogen One G3 Basic System

Inogen One G3 Basic Battery System

Inogen One G3 Freedom System

Inogen One G3 Freedom Battery System

Inogen One G3 Active System

Inogen One G3 Active Battery System

Inogen One G3 Traveler's System

Inogen One G3 Traveler's Battery System
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Visit Our Showrooms and See All Our Portables to Fit Your Oxygen Needs

3102 W. Thomas Rd, Suite 901
Phoenix, AZ 85017


4101 E. Wesley Ave, Suite #7
Denver, CO 80222


3357 W. Hospital Ave
Chamblee, GA 30341


Understanding Your Oxygen Order Before You Buy a POC

  • Oxygen is prescribed by a control of the flow rate, i.e., liter flow. The common 1-3 liters per minute continuous flow is not appropriate in all situations. This could be too much or not enough.
  • Precision in the use of the proper flow, or amount of oxygen, is necessary. The flow of oxygen should achieve the normal amount of oxygen in your blood, expressed as a saturation above 90%. *
    * This is a general statement. Your physician must prescribe your specific target saturation level

What to Know Before You Buy a POC

  • Portable Oxygen Concentrators manufacture oxygen, they do not store oxygen.
  • Portable concentrators produce enough oxygen per minute, which allows for an acceptable dose of oxygen every breath you take.
  • Portable concentrators that weigh 2 to 8 pounds only deliver oxygen on demand pulse flow.
  • Manufacturers of these devices place arbitrary numbers such as 1-3 or 1-6 to refer to the size of the pulse flow of oxygen and are not the same as liter flow. These settings are considered liter flow equivalents.
  • Also, these devices do not all produce the same amount of oxygen at a given setting.

Why Self-Monitor Before You Buy a POC

  • Many people commonly check their blood pressure, blood sugar or air flow rate (peak flow) at home.
  • We can measure temperature and weight whenever we have the need.
  • We can now measure our blood oxygen and pulse rate at home as well, using a simple pulse oximeter.
  • A common word used when measuring oxygen is titration .
  • Titrating is the measurement of what your oxygen equipment and setting is achieving in the arterial blood. It’s the blood that energizes the tissue.
  • By taking your own measurements, you can adjust your oxygen setting for any situation and with any portable oxygen concentrator.

Who to Ask Before You Buy a POC

  • Our respiratory team of licensed nurses and respiratory therapists will take the time necessary to choose the right portable for your respiratory needs.
  • Our 10-day trial with 100% Money Back Guarantee  on all portable oxygen concentrators assures your oxygen needs are met.
  • We understand that finding a portable oxygen concentrator that accommodates both lifestyle and oxygen needs can be a difficult process for both you and your loved one.
  About the Inogen One G3     Inogen One G3 FAQs
Inogen One G3 Brochure from
Inogen G3 Brochure
Inogen One G3 Manual from
Inogen One G3 Manual

It’s Oxygen Therapy On Your Terms.

What have you given up since you started oxygen therapy? Where would you like to go, what would you like to do? With an Inogen One portable oxygen concentrator, almost anything is possible. Each Inogen One oxygen concentrator is truly Oxygen. Anytime. Anywhere. Head home when you want to, not when your oxygen tank gauge says you have to.

Each generation of the Inogen One family is designed to provide active oxygen users unparalleled freedom and independence and an ability to live life without the restraints imposed by traditional oxygen therapy devices. It’s approved for stationary, portable, and travel use, for daytime and nighttime. You can now eliminate all of the cumbersome oxygen tanks because the Inogen One is a portable oxygen concentrator that makes its own oxygen from the air around you. That means the Inogen One will never run out of oxygen. The concentrator is made to make your life easier. There are no regulators to switch or portable tanks to refill or replace, just a couple of buttons. That’s it.

The new Inogen One G3 delivers the independence of Inogen's original oxygen concentrators, but it’s smaller, lighter, and makes more oxygen per pound with a longer battery life. Once you try it, you’ll wonder why anyone would use something else.

If you haven’t seen an oxygen concentrator from Inogen, then you haven’t seen anything like it. Embrace the simplicity of Inogen’s portable concentrators and eliminate the worry of running out of oxygen.

Meet the Inogen One family of medical oxygen concentrators – Welcome to Oxygen Therapy On Your Terms.

Can I take the Inogen One G3 onboard commercial aircraft?
Yes. The Inogen One G3 is approved for use onboard many commercial aircraft.  To see a list of airlines that accept the Inogen One onboard, please click here
How long does the Inogen One battery last?
A fully charged Inogen One G3 8-cell battery will last up to four hours. If the Inogen One G3 is being used at a higher flow setting, such as 4 or 5, the battery would last closer to 3 hours and if used at a lower setting of 1 or 2, it would last closer to 4 hours. By plugging into a power source, whether that be an electrical outlet or the cigarette lighter in a car (using the mobile power charger), the Inogen One G3 battery will charge.
Is the Inogen One G3 pulse dose? Can I use it at night?
Yes, the Inogen One G3 is pulse dose, but we have developed new pulse dose technology. The Inogen One G3 is designed to be used 24 hours a day, 7 days a week, even during the night. The Inogen One is clinically proven to provide the necessary oxygen for most ambulatory patients during all phases of daily activity and during sleep.
What is included in the Inogen One G3 system?
The Inogen One G3 system includes the Inogen One G3 Portable Oxygen Concentrator, Inogen One G3 8- or 16-Cell Lithium Ion Battery, AC and DC Power Supplies, and Carry Bag, a nasal cannula, and instruction materials.  The Inogen One G3 System includes everything you need to achieve independence.
  Inogen One G3 Product Specifications     Related Products

Length: 8.75"
Width: 3"
Height: 7.25"

Weight 4.9 pounds
(includes 8 -cell battery)
Oxygen Concentration 90% ± 3% at all settings
Oxygen Flow Pulse dose delivery system
Four flow settings from 1- 4

Amount of oxygen per breath at 20 breaths/minute:
Setting 1 = 10.5 mL
Setting 2 = 21 mL
Setting 3 = 31.5 mL
Setting 4 = 42 mL
OCD Trigger Sensitivity

0.12 cm water (12 Pa)

Power Sensing AC Power Supply 100-240V, 50-60Hz
(auto sensing to allow world wide use)
DC Power: for mobile use in car/airplane
Battery Duration ( 8 -cell battery): 3.5 to 4 hours at setting 2
Recharge approximately 2-4 hours with AC or DC power

Duration ( 16 -cell battery): 7 to 8 hours at setting 2
Recharge approximately 4-8 hours with AC or DC power
Noise 42 Decibels (at Setting 2)
Environmental Ranges Temperature: 41° to 104° F 
                   (5° to 40° C)
Humidity: 0% to 95%, non-condensing
Environment Ranges
Intended for Storage
Temperature: -4° to 104° F (-20° to 60° C)
Humidity: 0% to 95%, non-condensing
Store in a dry environment
Warranty 3 year limited warranty
Transportation Keep dry, Handle With Care
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