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


13 reviews


54% (7)


15% (2)


23% (3)


8% (1)


0% (0)

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  • Sandra

    Quick 3 day delivery as promised. 0 people found this helpful

    I received the G4 unit about 2 weeks ago. It arrived in 3 days as promised. I am very happy to be rid of bottles and already have service coming to pick them up. Keeping the rented large compactor for bedroom, but may buy a larger Inogen for that later. I am not worried about power outages because we have two excellent generators or can recharge the little G4 from cars also in that event. For me, it is working well on setting 2 and is all as advertised so far. Only time will tell if it continues to be reliable, but right now I love it.
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  • Tom C

    Great product 8 people found this helpful

    I checked out another small concentrator from a different company. Twice the weight. This unit is small and works fine. Very happy with this unit.
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  • Marty

    Noisy and tubing smells 10 people found this helpful

    The G-4 makes a noise that sounds exactly like popcorn popping. I was told by the customer service people that all G-4s make this sound. The tubing has a strong acrid odor which is unpleasant and smells very unhealthy and suspicious. There was no explanation offered for this problem.
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  • Richard O`Molony

    Great equipment. Perfect for travelling - car or plane. With Airline 150% battery requirement - time for the 7 hour, 12 cell battery, for those long haul international flights. 3 of these will cover those 13 - 16 hour long haul legs, if no on-board power 10 people found this helpful

    After only 2 years, of very occasional use - intermittent use on air and car travel only - one of my double batteries is completely dead and will not charge. I have two Inogen One-g4 POCs and three double and a single battery, to ensure that in remote areas to which I travel, I have a back-up machine and batteries. I require supplementary oxygen at level 2, intermittently, for about 6-10 hours a day. I have a constant flow machine at home in the bedroom and only use the G4 - as required, away from home - car, plane, etc.
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  • Marcia McGee

    GREAT EQUPMENT 7 people found this helpful

    It has been a full month for me and my G - 4 , it has made my 16 stairs a lot lighter I also just bought the Oxy - View Glasses so as not to have the tubing across my face. I also want to say Thank You to Eric my sales rep he was great to work with.
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