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Portable Oxygen Concentrator Reviews (Inogen)

Portable Oxygen Concentrator Reviews: Inogen is inspiring a new generation of portable oxygen users.

portable oxygen concentrator reviewsSuccess stories are a valuable piece of customer feedback at Inogen. They serve as a source of inspiration for other people, as well as validation for Inogen that freedom and mobility are being achieved. When it comes to hearing about testimonials and reviews from our customers, Inogen is all ears! If you’re not an Inogen customer, read on to learn about what others are saying about their experience with Inogen One portable oxygen concentrators.

Portable oxygen concentrator reviews from our customers are tremendously important to us, as they help us innovate and make our products even better. They also help others who are researching about portable oxygen concentrators to make the decision if the Inogen One is a good choice for them. A review of an oxygen concentrator or a story of your experience with Inogen helps other people find inspiration and motivation to improve their oxygen therapy lifestyle for the better.

How Inogen Helps Oxygen Therapy Patients

Inogen is dedicated to continuously improving the lives of oxygen therapy patients through innovative portable oxygen therapy. Here is a video of several Inogen customers and Inogen customer development representatives discussing their experience in helping patients reclaim their freedom with Inogen oxygen concentrators:

As you can see, Inogen’s users have great voices and unique experiences. Inogen loves to share customer success stories since they can help other patients in their portable oxygen concentrator buying journey. If you’re one of those trying to decide, hopefully the above video helped you get to know Inogen a little bit more.

We believe that if others see that oxygen therapy obstacles can be overcome, it will give them hope that they too can improve their life with portable oxygen therapy.

It’s important that new and prospective users know the truth from the most credible source: the people using the oxygen concentrators day in and day out.

Here are a few more testimonials and portable oxygen concentrator reviews that have helped others decide on whether or not Inogen is right for them:

“Switching from oxygen tanks to the Inogen portable unit has been immensely beneficial to our quality of life.” – Margaret M.

“I have been using mine now since March 2012. This is so wonderful!!! I used to have to lug 3 or 4 tanks to make it through an average day.” – Sharyn T.

“Dear Inogen, I want to thank you for your great product. It has allowed me to continue to pursue all my passions of life because I can travel and play golf, hunt and fish anywhere in the world that has power or a generator.” – Dr. Michael J. C.

And this review is one of our favorites:
“My first portable oxygen concentrator was not an Inogen, and it failed me once too often just weeks before a scheduled 8 ½ hour flight from Norfolk to San Diego. I had been told that Inogen made the best POC on the market… so I called to inquire about it. When I learned that the Inogen came with a lifetime warranty, I decided to buy it, and I am so happy now that I did. I found the Inogen One G2 to be easy to use, easy to care for and able to get me from coast to coast in an airplane without the need of changing batteries! And it was so quiet that I often checked to make sure the green light that signals that it is working was on! I needed oxygen 24 – 7 during my visit to the beautiful town of Ojai CA, and I pulled my G2 around with me both through the town and up on the top of Meditation Mount outside of Ojai where I went to take photos. Thanks to Inogen, I can now look forward to more visits to California and the Southwest without having to worry about where my next breath is coming from!” – Sarah G.

Want to hear more? Watch the video below to hear Claudia’s testimonial or go to our Customer Stories page!

Want to learn more about Inogen One oxygen concentrators?

Learn More 


48 thoughts on “Portable Oxygen Concentrator Reviews (Inogen)”

  1. Avatar Gary says:

    Can one secure your concentrator to their back so they can take full swings ( driver ) when golfing?


    1. Web Admin Web Admin says:

      Gary, yes we have backpacks available for purchase in the Inogen.com store, which can help you accomplish this.

      We have a backpack for the Inogen One G3 and a separate one for the Inogen One G2. Please see the links below:


  2. Avatar mozella worden says:

    Excellent analysis – I learned a lot from the information ! Does someone know if I would be able to acquire a sample a form document to work with ?

    1. Web Admin Web Admin says:

      Mozella, what exactly do you need a form for?

  3. Avatar Hilary Davis says:

    I have the Inogen one G3 POC. Am I able to sleep with it? The South African supplier indicated that it was not suitable for sleeping?

    1. Web Admin Web Admin says:

      It is approved for nocturnal use as long as it is not used with a CPAP or BIPAP.

  4. Avatar Wanda says:

    How much does this weigh?

    1. Inogen Inogen says:

      Hi Wanda, It depends on which product and whether or not you're using a single or double battery. The G4, our newest unit, with a single battery is the lightest option, at 2.8 pounds. With a single battery, the weights for our products are as follows:
      Inogen One G2: 7 pounds
      Inogen One G3: 4.8 pounds
      Inogen One G4: 2.8 pounds

      For more information, please visit our comparison page: https://www.inogen.com/products/inogen-one-product-specs/

  5. Avatar Susan Moore says:

    Do you have a portable machine that puts out the same liters as the home machine. I am on 4 on the home machine I believe thats liters. I was told that the portable machines are milla liters. Is that true and is a milla liter a 100th of a liter? Please reply.

    1. Inogen Inogen says:

      Hi Susan, Thank you for your question! Our portable concentrators have settings rather than liters per minute (LPM). Because each unit is digitally calibrated, the settings translate to the same approximate LPM as a stationary machine. However, we do recommend that a medical professional titrates every patient to ensure they are using the correct setting. Our G2 portable concentrator has a maximum flow setting of 6, which is approximate 6 LPM. The G3 can go up to 5, and the G4 has a maximum flow setting of 3. Please give us a call at 1-800-678-5572 if you’d like more information!

  6. Avatar Nona pike says:

    Iam in need of oxygen but I don't pass my insurance so dr can't order it do I need a dr prescription for this

    1. Inogen Inogen says:

      Hi Nona, Yes you do need a doctor's prescription, however you do not need to go through insurance if you have a doctor's prescription. We offer patients the option to purchase and own a portable oxygen concentrator. For more information, please call an Oxygen Specialist at 1-800-678-5572.

  7. Avatar Herbert Tobin says:

    I purchased my first G4 from 1st Class Medical which is the company I bought my Evergo from. I had the first G4 just a short time, 3 months or so, before I reported my problem.
    My G4 Alarm went off and read Low Oxygen or sometimes Oxygen Error. They replaced my first one free of charge so that was ok.
    Now the 2nd one is saying Low Oxygen after a short while of using it. I have only had this unit about 3 to 4 weeks. I am very disappointed!

    1. Inogen Inogen says:

      Hi Herbert, We are sorry to hear you are having some issues with your unit. 1st Class Medical is a preferred provider and they will be able to assist you further.

  8. Avatar Janet Down says:

    Will there be a backpack with storage for extra batteries coming any time soon?

    1. Inogen Inogen says:

      Hi Janet, Thank you for suggestion. I will bring the idea to our product development team so that they can investigate further.

  9. Avatar Robert E Symons says:

    I purchased a G4 and from day one it has een making a loud clicking noise. I've called service a half dozen times and they say it is normal. I think they believe is the swishing noise get when breathing. I breath two or three times before I get the loud clicking. In a group situation the people comments on how it is making tha loud clicking noise. If this company doesn't back up their products I would not recomment them.

    1. Inogen Inogen says:

      Hi Robert, The air around us is 78% nitrogen, 20% oxygen, and 2% other gases. Our portable oxygen concentrators (POCs) filter out the nitrogen and other gases in the air to produce medical grade oxygen. The clicking noise you are hearing is the concentrator expelling nitrogen and other gases. All POCs make a clicking sound as they are mechanically converting normal air to medical grade oxygen. The Inogen One G3 is one of the quietest POCs on the market. On a flow setting of 2, the noise level is 39 dBA. Please visit our FAQ page for more information: https://www.inogen.com/support/faqs/

  10. Avatar Lesa Sikora says:

    I am a very light sleeper. I currently use an oxygen concentrator at night only, but I have a 50 ft hose so I can place it in another bedroom to sleep. The pulsing and whooshing noise keep me awake. How quiet are these? I need one for sleeping only, and I don't like to cope with my heavy unit. I'd like to get one to travel with, but if it's going to be noisy, I can't use it. Thank you for your response.

    1. Inogen Inogen says:

      Hi Lesa, The higher the flow setting, the more noise a concentrator will make. However, our portable oxygen concentrators are some of the quietest POCs on the market. On a flow setting of 2, the Inogen One G3 the noise level is 39 dB. To hear an amplified recording of the characteristics of its sound, please visit: https://www.inogen.com/support/faqs/

  11. Avatar Bruce Adams says:

    What is the lowest temperature that the Inogen one G4 can operate? Can I walk outside using it when the temperature is below 0 centigrade?

    1. Inogen Inogen says:

      Hi Bruce,
      Our POC’s can be used in low temperatures. Basically, if the user can tolerate the temperature for a certain period of time, most likely the device will also tolerate. Our POC’s are built with smart technology and will advise the user (on the display screen) if the device gets to a temperature too hot/cold and give enough warning to get the device to a more comfortable environment.
      I hope this helps answer your question.
      Thank you.

  12. Avatar Heather Preston says:

    I have an Inogen G2 and have had nothing but problems….my first machine Ihad after about a year stopped giving me oxygen…I would inhale but no oxygen would come out and it got to a point where I would inhale 10 times and finally a very long burst of oxygen would come out and it did this continuously. I was finally sent a different machine (don't think it was a new one) and it started out doing the very same thing but didn't get too bad until a month later and it is now doing the exact same thing…this is a serious problem for me as I'm not getting enough oxygen while I'm out and I'm not sure what to do about this.

    1. Inogen Inogen says:

      Hi Heather, Please call our Customer Care department at 1-877-466-4364 so we can help you troubleshoot.

  13. Avatar Yvonne Enticott says:

    My husband uses the Inogen g3 can he use it overnight please

    1. Inogen Inogen says:

      Hi Yvonne, Yes the Inogen One G3 can be used day or night, and should be used as prescribed. Most doctors prescribe 24/7 oxygen and if that is your husband's case, he should use his Inogen One G3 at night.

  14. Avatar Laura Bauer says:

    Hello. I use the Inogen One. The largest concentrator that goes up to 5lpm. I currently use it on setting 3 as needed. Yesterday my display alarmed with a readout of "low oxygen". I no longer have my manual for reference. What does it indicate? It was on #2 setting at the time. I turned the machine off for a while. Now it appears to be ok.

    1. Inogen Inogen says:

      Hi Laura, When you say that you have, "the largest concentrator that goes up to 5 lpm" are you referring to the Inogen One G3? If so, according to page 25 of the Inogen One G3 User Manual an Oxygen Low message alert means that the concentrator is producing oxygen at a slightly low level (<82%) for a period of 10 minutes. If this condition persists, please contact us at 1-877-466-4364.

  15. Avatar Sue says:

    Every time I inhale there's quick a sucking noise in my cannula. Is this normal? I have a One G3

    1. Inogen Inogen says:

      Hi Sue, How long have you had your Inogen One G3? If you are new to portable oxygen concentrators, you may just be hearing your own breath coupled with the "puff" sound of the bolus. If you have had your Inogen One G3 for a while and this issue just started, you should contact our Customer Care Department at 1-877-466-4364.

  16. Avatar Marie says:

    Above, Robert Symons complained of the distracting loud clicking the G4 makes. You replied with stats on the G3? I also am interested in whether the G4 is noisier than other units – whether Inogen or not – because I actually sent my first back and got a replacement because of the noise… Unfortunately, the replacement unit is ever MORE noisy! I can't find any information about the G4…

    1. Inogen Inogen says:

      Hi Marie & Robert – My apologies! The Inogen One G4 is 40 dBA* – 1 dBA higher than the Inogen One G3.

  17. Avatar Robert hicks says:

    I have seen you product on the internet, and I am tired of not being able to leave my room without dragging A tank along.

    1. Inogen Inogen says:

      Hi Robert, We totally understand how you're feeling! Heavy tanks are a burden. Let us talk you through our different portable oxygen concentrators. Please call 1-800-374-9038, to speak to an Oxygen Specialist today.

  18. Avatar Mark Emden says:

    Little is said about batteries. What type are used? Are they rechargeable?
    Where do I get them? That is their cost?

    1. Inogen Inogen says:

      Hi Mark, Our batteries are rechargeable lithium-ion batteries. There are two different types of batteries (a single and a double) available for the Inogen One G4 and the Inogen One G3 portable oxygen concentrators (POCs). Double batteries give the user about twice the battery life of a single battery. On a flow setting of 2, the Inogen One G4 single battery gives up to 2.7 hours of battery life. On the same setting, the Inogen One G4 double battery gives up to 5 hours of battery life. On a flow setting of 2 on the Inogen One G3 POC, the single battery gives up to 4.7 hours of battery life, and the double battery gives up to 10 hours.

      For more information, including recharging times and purchasing, please visit our batteries here:

  19. Avatar Deb says:

    I currently bleed in 1.5liters continuous flow oxygen from an Everflo Q into the line for my Res Med VPAP machine at night. But the Everflo is too heavy to travel with.

    I also use a Inogen G3 to fly. Can I use my G3 for overnight oxygen with the VPAP machine?

    1. Inogen Inogen says:

      Hi Deb, Unfortunately, you cannot use the Inogen One G3 with a CPAP or VPAP device. However, our Inogen At Home stationary concentrator is compatible and was designed to fit under airline seats for this very purpose. For more information about the Inogen At Home stationary concentrator, please visit: https://www.inogen.com/product/inogen-at-home-oxygen-concentrator/

  20. Avatar Lois C Raynes says:

    Can a portable machine be used for night when on a trip? That is my primary need for one at this time.

    1. Inogen Inogen says:

      Hi Lois,
      Thank you for writing us. Depending on your required flow settings, the portable oxygen concentrator could possibly be used overnight with a double battery and/or when connected to a power source. It is best to call us and discuss the specifics with an oxygen specialist. 800-374-9038. Thank you!

  21. Avatar Rob says:

    The one I have now they put a thing where the air goes through water, because the air was dry when I breathed in. Does yours have that option

    1. Inogen Inogen says:

      Hi Rob, You can attach a humidifier bottle.

  22. Avatar Roger L. Freeman says:

    I absolutely LOVE my Inogen but one of the reasons I decided to purchase it sight unseen was the weight. It is advertised as weighing 2.8 lbs. which it does but that's without the battery. Altogether, it is not quite light to play tennis or ride a bike as advertised on TV. I did purchase the belt which is much more comfortable but it's impossible to wear while driving.

  23. Avatar Bill Williams says:

    We are in Butte County and just went through the Camp Fire. Can the Inogen be used with a fase mask as a particulate scrubber? If not I highly recomend to your Research & Developement Department to find a way to do this. There are 60,000 people left homeless from the fire that are breathing contaminated air. This would be an excellent idea for a new product.

    1. Inogen Inogen says:

      Hi Bill,
      The Inogen One G4 has a particle filter already attached to filter out impurities. The filter is recommended to be washed every week, but can be washed more frequently if there is a noticeable build up. If the quality of oxygen falls below medical grade the will be alerted. No additional filter is recommended to be attached since we have not tested the unit with additional filters. Thank you!

  24. Avatar Rhonda Sherwood says:

    I love my G5. My cord for the car messed up and they had me a new one in less than 24 hours.

  25. Avatar Dawn says:

    Is it possible to get an actual copy of the lifetime warranty for the G5? I am interested but want to see the warranty before spending the additional monies.

    1. Inogen Inogen says:

      Hi Dawn,
      Please visit the limited warranty information on our website. The invoice will also have the warranty information on it for you (printed out). Thank you

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