Inogen One G5: An Expert Review and Buying Advice

The Inogen One G5 is the latest addition to the family of Inogen’s user-friendly portable oxygen concentrators. With expanded features built on the foundations of the Inogen One G3 and the Inogen One G4, the Inogen One G5 is looking to be a "one-size-fits-all" portable oxygen concentrator that will do well for almost any person who requires supplemental oxygen on-the-go.

In this blog post, I will discuss what is new in the Inogen One G5 and provide my overall review. If you missed my latest review of the Inogen One family of portable oxygen concentrators (which includes the Inogen At Home 5L stationary concentrator), be sure to read that blog post to get a full scope of the differences between each device.

Why I’m An Expert

I am not affiliated in any way with Inogen, so my review of these products constitutes from publically-available information by Inogen and my experiences as a board-licensed respiratory therapist for 11 years, working primarily in acute care hospitals. My experience has exposed me the various challenges and situations that relate to oxygen therapy use, both in the hospital and home settings. Through my training and clinical experience, I have worked extensively with various Inogen product and providing my opinions in the post.

Finally, this post does not constitute medical advice in any way. It is advised to discuss the specifics of these oxygen concentrators with your doctor before ultimately purchasing a device to ensure you have the right equipment for your needs. This information is for educational purposes only.

What is New in the Inogen One G5

There are 2 primary updates with the Inogen One G5: the flow setting capacity and battery life.

It seems that Inogen focused the updates on this device to increase the user’s ability to get more oxygen if needed and to increase the overall life of the machine while on-the-go. Both of these additions will allow the user more flexibility in terms of being able to perform more activities of daily living without the need for constant equipment changes. These additions are consistent with Inogen’s mission to increase the independence of people who require supplemental oxygen.

Flow Setting Update

The pulse flow settings for the Inogen One G4 can reach a maximum flow setting of 3, while the Inogen One G3 can reach a maximum flow setting of 5. However, the Inogen One G5 is now capable of reaching a flow setting of 6, which makes it the most powerful oxygen concentrator available by Inogen, even surpassing their stationary concentrator.

Inogen One G5 6 Pulse Settings

While a higher flow setting might seem like a gimmick if you only need a low setting, there is a benefit to the higher liter flow setting for almost anyone requiring supplemental oxygen. Exercising with COPD can be a challenge because of the higher utilization of oxygen by your muscles, which means you will need to take in more oxygen during your exercise routine. However, if your device is not capable of reaching higher liter flows, you might be stuck limiting your exercise routine or only exercising at home where you can use your stationary oxygen device.

With 6 liter flow settings, the Inogen One G5 gives you even more capacity for getting the oxygen you need during exercise so you can go farther without needing to limit your routine.

Additionally, during emergencies, you might need more oxygen than you are typically prescribed with. Although the best strategy for dealing with an emergency is to call 911 or visit your local emergency room, there is greater peace of mind knowing that your portable oxygen device can go higher in liter flow until you can be seen and treated by a professional.

Battery Life Update

The Inogen One G5 has also increased the total battery life for the Inogen family. The Inogen One G3 previously held the highest battery capacity at 10 hours with a double battery, but the Inogen One G5 can now reach 13 hours with a double battery. The additional 3 hours is long enough to give you the freedom to run a few more errands or go a bit farther if you are traveling as well as the need to keep a second battery with you for the short local trips or outdoor activities.

Outdoor Activities with the Inogen One G5

Additional Updates

There are several more updates that, while smaller in scale, are an improvement over previous models.

The noise level for the Inogen One G5 has dropped to 38 decibels at setting 2, which is down from 39 decibels at setting 2 for the Inogen One G3. While not a very large drop, the Inogen family overall is already quieter than most devices on the market, so a slight decrease in noise level is just that much better.

Additionally, the Inogen One G5 is smaller in both height and length compared to the Inogen One G3, but the Inogen One G3 is still slightly smaller in width. Overall, the Inogen One G5 is smaller, but the Inogen One G4 still beats both the G3 and the G5 in terms of size and weight. However, the Inogen One G4 only reaches a maximum liter flow setting of 3, so the Inogen One G5 is still the overall most significant improvement.

My Overall Review of the Inogen One G5

In terms of updates, I think the Inogen One G5 is a significant improvement over previous models for those looking to do more and go farther in their daily lives. If you already have an earlier model, I wouldn’t say you need to retire the old for the new just yet, unless you know for sure you need the higher liter flow settings and longer battery life. However, if your current device is seeing its final days and you are looking for an upgrade, or if you are in the market for your first oxygen concentrator, the Inogen One G5 is a great "one-size-fits-all device" that will cover most of your supplemental oxygen needs.

Inogen One G5 Complete Package

About Ryan Anthony: Ryan Anthony, BS, RRT is a registered respiratory therapist and content writer and medical blogger currently located in Los Angeles, California. As a Respiratory Therapist, he performs a wide range of hospital duties including adult and neonatal intensive care, nitric oxide therapy, high-frequency oscillatory ventilation, conventional mechanical ventilation, noninvasive ventilation, BiPAP, CPAP, intubation assistance, bronchoscopy assistance, cardiopulmonary resuscitation, chest physiotherapy, and nebulizer therapy.

30 thoughts on “Inogen One G5: An Expert Review and Buying Advice”

  • Greg Snyder

    I'm on 6 liters and this may be what I need to leave the tanks behind. What's realistic bat time using 6? I had an earlier Inogen back when I just needed 2liters. It didn't hold up too well, so Im a little leery along with my excitement about getting truly mobile again.

    Reply
    • Ed Rodgers

      Hello Greg,
      The output of the G5 on the setting of 6 is not liters per minute but increases the volume of the pulse or bolus of oxygen. I do recognize it can be confusing with the setting usage and the Liters per minute needed by continuous flow machines. Also the battery chart that Inogen provides shows the battery run time for a standard battery at a setting of 6 to be 1:26 and with an extended battery to be 2:58. As with any machine that uses batteries, the run time and battery can be slightly better or less the run times are an average. I do hope this helps you Greg. All the Best.

      Reply
  • Edward R Knisley
    Edward R Knisley July 12, 2019 at 10:52 am

    Are we ever going to be able to do continuous flow as opposed to that nuisance pulse dose?
    Is Medicare finally covering the cost of these units?

    Reply
    • Ed Rodgers

      Hi Edward, The technology required for continuous flow is unable to be achieved in a smaller machine yet. As for Medicare covering units, this has not seen any changes and will still need people to work directly with their provider and coverage if the machine is covered or not. I do hope this helps. All the best!

      Reply
  • Ray Metlicke

    We have been researching various machines for some time now and we checked with our Pulmonologist. My wife is currently on 4 liters continuous flow at home and the same on our portable C tanks on the go. You can see that our time is very limited by the C tank capacity at the current flow rate. Is there a reason why none of the portable units on the market do not have a contnuous flow setting feature besides the battery life issue? Our Pulmonologists states we do not qualify for a potable unit because I require a continuous flow setting of 4. Pulse settings will not keep up with my demand. The concentrator companies are very reluctant to advise you that these devices are not capable of fulfilling your needs when on continuous flow. Our Pulmonologists is not. We just want a little more freedom to function outside the home. Thank you for your anticipated response in this matter.
    Ray & Mary Catherine

    Reply
    • Ed Rodgers

      Hi Ray, I do emphasize with you and many others who have conditions that are beyond the concentrator's functionality. Needing a portable continuous 4 LPM option is more than any machine on the market are able to get. The one that comes to mind is the Eclipse 5 which can deliver upto 3 LPM. You are correct that it comes down to power and the technology to create and deliver the amount of oxygen and a smaller size. To continue to shrink and make a portable option to what a home continuous concentrator does would be a great advance and benefit many. Like you, I hope that those who work on such problems will be able to create this solution soon. I do wish you and Mary Catherine the best.

      Reply
  • George

    What is the max constant flow stetting of G5

    Reply
    • Ed Rodgers

      Hi George the G5 is a pulse dose machine with a setting of 6 but this is not a continuous flow machine. Sorry if there confusion in the review that it provides this feature.

      Reply
  • Eugenia Robinson
    Eugenia Robinson July 12, 2019 at 12:20 pm

    I need 6 liters dose this go up to 6 if so how much does it cost

    Reply
    • Ed Rodgers

      Hi Eugenia, The Inogen G5 does have a setting of 6 but this is not a liters of oxygen setting but a setting on the volume and frequency the machine can deliver. So the Inogen G5 does not provide 6 liters per minute which I apologize for the confusion.

      Reply
  • Waide Cooper

    when will there be a portable model with constant air flow to 5 or 6 levels?

    Reply
    • Ed Rodgers

      Hi Waide, I wish I had that answer as well! Knowing that home machines can deliver this, it comes down to portability of the technology and the ability for a battery source to maintain the output. If you have seen the eclipse 5 and the size that it is to deliver 3 liters per minute, this is where the current technology has gotten us. We can only hope that the smart minds at the companies like Phillips and Inogen are working on that very thing. But currently, I am unaware of any timeline for this innovation. Hope all is well with you. All the Best.

      Reply
  • Sister Anne Marie Holden
    Sister Anne Marie Holden July 12, 2019 at 1:29 pm

    I have used both the G3 for 5 years and the G4 for 3 years. It is nice to have the smaller G4 but I have always found the G4 to be very fragile and it gets overheated easily and only getting about 2 hours per battery on 2 liters does not take me too far. The G3 has been my go to machine but it is heavy. What is the weight of the G5 with the 13 hour battery and what is the cost? Sincerely, Sr. Anne Marie Holden

    Reply
    • Ed Rodgers

      Hi Sister Anne Marie, Glad the G3 works well for you. It is a reliable machine. As to your questions regarding the new G5, the information from the manual indicate the battery run time for an extended battery on a setting of 2 is 10:22 which is an average time for the batter. The weight of the G5 with a standard batter is listed at 4.7 pounds. So with an extended battery it would be a few pounds more. The price of a G5 with a standard battery is listed at $2395. I do hope this helps you. All the Best.

      Reply
  • gerald shearer
    gerald shearer July 12, 2019 at 3:48 pm

    wow

    Reply
  • ARCHIE LEE

    HOW MUCH IS THE COST

    Reply
  • april j plummer
    april j plummer July 12, 2019 at 4:13 pm

    i the g5 airline approved are any of the batt from g3 interchangeable how heavy is the g5 and is it medicare approved and how expensive is it do you take trade ins

    Reply
    • Ed Rodgers

      Hi April, The G5 is FAA approved. but the question about the batteries, the G5 has their own battery pack design which will require new batteries. I am unaware of what Medicare has done regarding the G5. And yes we do take trade-ins! Give our BuyBack team a call at 844-327-2154 and they can help you facilitate the trade-in. Hope this helps!

      Reply
  • Nancy Ogan

    I need oxygen 24, 7. Will this machine handle it week after week?

    Reply
    • Ed Rodgers

      Hi Nancy, If you are on a continuous oxygen prescription, then the G5 will be unable to meet your needs. If you are on a Pulse prescription then yes the machine is made to help you and can be used for oxygen on a pulse setting. It can be used both with a battery or plugged into a wall (or car charger). I hope this helps!

      Reply
  • Karen E. Dunne
    Karen E. Dunne July 13, 2019 at 2:27 am

    Does a 4 battery work with the 5? Do you do trade-ins? My 4 has been used for 4mo.

    Reply
    • Ed Rodgers

      Hi Karen, the G4 batteries will not work with the G5 which requires there own battery design. Yes! we do take trade-ins. If you want to do this contact our BuyBack team at 844-327-2154 and they can explain the process and help you with trading in you G4. Hope this helps.

      Reply
  • G. Bassler

    Please identify the capabilities of the G5 for pulse and continuous flow. I found the review very confusing. It is always critical to know when you are referring to pulse vs continuous flow. I'm only interested in finding a powerful continuous flow portable concentrator.

    Reply
    • Ed Rodgers

      Hello, The G5 is a pulse only concentrator. I am sorry the review was confusing. Here is a link to our product page that may help better explain and outline the capabilities. Hope this helps. https://www.oxygenconcentratorstore.com/inogen-one-g5/

      Reply
  • Alan sederis

    Does the iogen 5 use different batteries than t he iogen 3

    Reply
  • Jean M. Rommes
    Jean M. Rommes July 14, 2019 at 8:14 am

    I understand that there have been a lot of problems with the G5 right out of the box and that many have had to be returned. What do you know about the return rate? I know my provider won't handle them until the bugs are worked out.......

    Reply
    • Ed Rodgers

      As a new product, the working out of problems can occur. As the G5 is new to the market, stories related to needing to return some is going to be posted. I have not received any information on the return rate on the G5 at this time so can not provide you with any different information that you may have. But as Inogen is a leader in oxygen concentrators, I trust they are being diligent in addressing the returns that have happened. Hope this helps.

      Reply
  • Gudrun E HAFNER
    Gudrun E HAFNER July 14, 2019 at 9:17 am

    Any portable number such as 5 is not liters. Stationary concentrators deliver in liters; portables say 5 but that is just a number, not liters.

    Reply
  • Alana Forsyth
    Alana Forsyth July 17, 2019 at 1:48 pm

    There is nothing on Inogen's website comparing the G5 to the G2, which I am using now. I understand that the G2 has been discontinued, and I have read that the G5 is an improved G2. Do you know how setting 6 on the G5 differs from setting 6 on the G2?

    Reply

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