Customer Reviews of the Inogen One G4

Reviews of the Inogen One G4 Concentrator
Inogen One G4 Concentrator
Manufacturer: Inogen
Sku: IS-400
Unit Overview:
  • Pulse Dose Settings of 1-5
  • 2.8 Pounds with 4 Cell Battery
  • 2.2 Hour Battery Life with 4 Cell Battery
  • Includes the G4 unit, 4 cell battery, AC power supply, DC power cable, carry bag, carry strap, cannula and manual.

Customer Ratings and Reviews of the Inogen G4 Portable Oxygen Concentrator

Inogen One G4 Portable Concentrator Inogen One G4 Mobile Oxygen Concentrator


44 reviews


75% (33)


14% (6)


7% (3)


2% (1)


2% (1)

See All Reviews
  • Sandra

    Concentrator arrived on time. 1 people found this helpful

    Concentrator arrived on time without any problems. I love that it is so light and the battery last for a long time.
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  • Cindy

    Great 0 people found this helpful

    Bret was wonderful to work with. I did most email communication because it was easier for me and he was very patient. Answered all my questions and I've got my G4 on its way! Thank you so much this is going to make my life so much easier!
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  • Donna

    G4 is awesome unit 3 people found this helpful

    I purchased my G4 in Nov 2023 After dealing with canister units since 2019 It is awesome to be able to go where I please when I please without the hassle of heavy equipment or bulky bundles hanging from my back I have xtra back up batteries which will allow me to take trips in my car or on a plane! Customer care team was very helpful too
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  • Marilyn

    Like it! 2 people found this helpful

    The gentleman I talked to on phone was very polite, easy to hear and understand, knew answers to the questions I asked and told me extra information which I was glad to get. I ordered what I thought I'd like and they had it delivered to me very soon and I have been getting acquainted with my new concentrator and like so many things about it--especially that it weighs less than another I had tried!
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  • Allen

    The G4 unit is great 7 people found this helpful

    The unit is great but there were no instructions and the carrying case is a little difficult to manage. The power supply plug-in doesn't line up with the cut out. Otherwise, we received the unit very quickly...much appreciated.
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