INOGEN G4 CONCENTRATOR

Inogen One G4 Portable Concentrator

The Inogen G4 Package includes the G4 unit, single battery, AC power supply, DC power cable, carry strap, carry bag, cannula and manual.

If you’re looking for a portable oxygen concentrator that’s easy to carry, lightweight, and user friendly, but still delivers oxygen efficiently? Well… you’re in luck! The Inogen One G4 offers unmatched portability with excellent oxygen availability and includes a host of accessories, making it perfect for an unrestricted, active lifestyle.

At only 2.8 pounds the G4 redefines lightweight. It’s also tiny – under 7.5 inches in all dimensions. The included accessories consist of an AC power supply, DC power cable, battery, carrying case with shoulder strap, and accessory carrying bag. You’ll have everything you need right from the start.


The G4 offers even more than excellent portability and a ton of included accessories. It’s also incredibly quiet. In fact, it’s softer than a normal conversation, allowing you to use it discreetly practically anywhere, even in quiet environments. When at home, the volume is so low it won’t interrupt conversations or television programs.

The G4 also provides unmatched ease of use with a large, easy to read screen and oversized buttons that are simple to use and interact with. The average battery life is 3 hours, and the included DC car charger makes it convenient to use on the go. You won’t have to worry about battery life while you run your daily errands.

Of course, you’ll also benefit from top of the line oxygen delivery when using the G4. Not only can you choose from 3 different flow settings, but the G4 also features Inogen’s Intelligent Delivery technology. This system makes the concentrator ideal for use during sleep by automatically adjusting the amount of oxygen provided to compensate for your reduced breathing rate. Similarly, it will deliver oxygen faster when you’re active or exercising. This innovative feature eliminates the need for a separate oxygen delivery system for nighttime use. Instead, you have it all in one!

Studies have shown that the first part of an inhalation is when oxygen is used most efficiently. The oxygen moves into the lungs during this phase where it is exchanged for carbon dioxide. The G4 is designed to make the most of this fact by supplying oxygen during the initial 400 milliseconds of a breath. This gives you greater oxygen efficiency to fit your unique needs no matter your activity level.

You want to make sure your investment in this innovative and efficient oxygen concentrator is protected. Fortunately, an included 3 year warranty covers the Inogen One G4 itself. There’s also an additional 1 year warranty included that covers the sieve beds and accessories to give you complete peace of mind.

Inogen G4 Product Highlights

  • One of the smallest and lightest oxygen concentrator units available – just 2.8 pounds!
  • Intelligent Delivery Technology ensures oxygen is provided when you need it most – both while active and asleep
  • Extra large LCD screen and buttons make operation a breeze
  • 3 Year Warranty

G4 Product Specifications

Sku: IS-400
Manufacturer: Inogen
Weight: 2.8 pounds for the unit
Size: 2.68 inches X 5.9 inches X 7.2 inches
Warranty: 3 Year Warranty on the Unit; 1 Year Warranty on Accessories
Battery Charging: 3.25 hours (single), 6 hours (double)
Battery Duration: Up to 3 hours (single), Up 6 hours (double)
Noise Level: Around 40 decibels, depending on setting
Rating: 4.7


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