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Inogen One G4
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Carry Bag for Inogen One G4

Inogen One G4 Portable Oxygen Concentrator

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The Inogen One® G4 System (IS-400):

  • Highest Capacity at or Below 5 Pounds
  • Library-Quiet, Reliable Operation
  • Clinically Proven for 24/7 Use
  • Unique Field-Changeable Sieve Beds
  • Inogen Connect Bluetooth App

The Inogen One G4 is one of the smallest, lightest and quietest portable oxygen concentrators available today. Weighing in at just 1.5kg (3.3lbs), the Inogen One G4 Portable Oxygen Concentrator is designed to allow you to utilize portable oxygen therapy anytime, day or night. 

Includes AC Power Supply, DC Power Cable and Carry Bag.

Available in 4-cell single battery or 8-cell double battery.

Inogen One G4 Brochure



5-year warranty on the POC

1-year warranty on the battery, sieve-beds, and accessories ie; power supplies, carry case.   


Prescription Policy

The purchase an oxygen concentrator through this website requires that you have a valid oxygen prescription from your physician.  A valid oxygen prescription must be signed by a medical physician licensed in Canada and includes flowrate setting, patient name, prescribing physician’s name & signature, and date of prescription. The prescription must not be expired.

If you have placed an order for an oxygen concentrator through this website we require that you provide to us a copy of your prescription as follows:

By email to our secure email address: (or via the upload button when adding to cart).

Include on your prescription your order confirmation number that we send to you.

*All items offered for sale on this website excluding Oxygen Concentrators and PAP devices, do not require a prescription.

Click here to view policy.