Inogen One G5 Portable Oxygen Concentrator Review

Inogen One G5 Portable Oxygen Concentrator Review

Are you looking for a reliable and convenient portable oxygen concentrator? One idea to consider is to check out all the essential details of the device before purchasing. This would help you spend your money on a worthy product that will surely benefit you and fit your needs.

Eager to identify more? Continue reading this article so you can explore more in this Inogen G5 review.

Bottom Line Up Front

The Inogen One G5 Portable Oxygen Concentrator is perfect for patients looking for a reliable oxygen therapy device with modern features. This is convenient because you can use it at home or even outside.

If you are a frequent traveler, this will be the best option. You can bring this anytime, anywhere — either in a plane, car, or even just walking.

There are also benefits you can get in purchasing the Inogen One G5. If you would like to identify these benefits, they are listed below:

  • This device is easy to use and operate
  • It is considered one of the lightest portable oxygen concentrators
  • It contains the highest oxygen output
  • It is handled using Lithium-Ion Batteries, which are considered powerful.
  • It is not distracting because it creates a low sound output
  • You can use this up to 24 hours each day
  • It is backed up and supported by a reputable and reliable brand.

What You’ll Like

  • It contains a high oxygen flow of 1-6
  • It is lightweight compared to the Inogen One G3
  • The battery life of Inogen One G5 is improved than the G3 for its mobility
  • It operates and delivers oxygen quietly
  • It is FAA-approved

What You Won’t

  • The Inogen One G5 is lightweight, but it is heavier than the Inogen One G4
  • Other accessories and upgrades for G5 will add to its price

A product will always have a positive and negative side, so it is better to make an effort in identifying the essential things that might help you. Now that we already know the Inogen One G5’s details, we can move forward to a much deeper topic. 

Go on and continue exploring this product by reading everything below.

What Is The Inogen One G5 Portable Oxygen Concentrator?

The Inogen One G5 Portable Oxygen Concentrator is one of the newest and most famous supplemental oxygen machines today. This product is helpful in both medical and non-medical aspects.

The G5 also contains two battery options; the 8-cell and 16-cell battery. The 8-cell battery weighs 4.7 pounds and is 8.15 inches high, while the 16-cell battery weighs 5.7 pounds and is 9.15 inches tall.

You may think that you might have a problem with the size, but you don’t have to worry at all. Despite its dimensions, this oxygen concentrator can still accommodate a lot of patients because it offers a 1-6 pulse setting.

How Does The Inogen One G5 Work?

The Inogen One G5 can be controlled and operated efficiently. You can always see the battery life and type of setting being applied on the indicator screen. If you want to change the settings, you can use the large + (positive) and - (negative) buttons to do it quickly.

If you are worried that your breathing goes slower over time, this product can easily save you. It contains an intelligent delivery system which is sometimes called “Sleep Mode”. The G5 will automatically feel this and immediately adjust the flow when your breathing changes.

The Inogen One G5 is indeed an advanced type of oxygen concentrator. It comes with an Inogen Connect app which is very useful, convenient, and can provide hassle-free experiences. If you want to know some advantages of this application, you can rely on the information below.

  • Once you connect the Inogen system to your mobile, you can get regular updates displaying the device’s information. This includes real-time battery life, reminders on maintenance, settings, and software updates.
  • You can also quickly check the purity status of the oxygen and life status.
  • This device can also help the patients live their lives as they want.
  • Instead of troubling yourself for checking POC, you can easily monitor your status by looking at the mobile application you have downloaded.

Inogen One G5 Features

Every product has its own features that make them unique and different from the others. It might be the product’s appearance, functions, controls, price, inner parts, and many more. This might take a lot of time, but it is better to check and study what Inogen offers so you would know what to purchase and what not.

Continue reading below to know the features you would look for in oxygen concentrators on the market. This may help you decide whether it is worth it to purchase or not.


The Inogen One G5 is a lightweight device that perfectly fits patients. You do not need to worry because it has a compact design that you can use for 24 hours.

Moreover, the interface of this portable oxygen concentrator contains LCDs and control functions that are easy to read and follow.

Size and Weight

The size and weight of Inogen One G5 are classified into two kinds. In this device, we have the 8 cell and the 16 cell. For clarification, below is the table presentation of its sizes and weights:



8 Cell

8.15”H x 7.19”W 3.26”D

4.7 lbs

16 Cell

9.15”H x 7.19”W 3.26”D

5.7 lbs


The Inogen One G5 is a lightweight and compact device, making it more convenient. This is especially useful when the device is needed for an emergency. 

LCD Screen

Patients can identify important details and information just by looking at the device’s screen. It features the setting they currently belong to and the battery life they still have. More than these, you can also identify the issues and problems being encountered at the moment.


The Inogen One G5 also has its own controls to operate properly. You can easily manipulate this device without any problems and inconveniences. Below is the list of the controls you can encounter on the machine:

  • On and Off button
  • Flow setting control buttons (- or +)
  • Volume control buttons
  • Audible alert button


This device has an alarm called High Priority Alerts. This is accompanied by a pattern of five continuous beeps, which will repeat every 10 seconds. If the battery of your Inogen G5 runs out, becomes too cold, or overheats, a flashing yellow light will appear that serves as an indication of your device’s current condition.

Sound Level

The Inogen One G5 is a light, small, and quiet device. This is a good factor if you prefer to use it outside or even while traveling because it does not create disturbing sounds while the oxygen flow is running.

To be specific, the sound level of this device is 37 dBA @ Setting 2.


The battery of the Inogen One G5 is composed of two types; it has a single and double battery. Each of them has its own specifications, but when the device detects that the battery life is low, there is an alarm for both of them.

Battery Life

The single battery of an Inogen One G5 will last up to 6.5 hours of operation. On the other hand the double battery will last until 13 hours. With this, charging the batteries will be your only option.

You can charge the single battery for at least 4 hours, and it takes 8 hours for the double battery. Take note that you can also consider the external battery charger.

Power Sources

The Inogen One G5 AC is the power source and supply of this portable oxygen concentrator. This power source helps achieve the exact voltage to correctly operate and power the Inogen One G5 device.

Power Consumption

The Inogen One G5’s power consumption depends on the cell battery. An 8-cell battery contains 18.7 watts, while a 16-cell battery has 18.4 watts.

Flow type

When it comes to the flow type or oxygen flow, it always follows the pulse dose delivery system or the six flow settings (1-6).

Sieve Beds

A sieve bed is referred to as a filter located in the inner part of the oxygen concentrator. This helps in separating the nitrogen from the oxygen in the air. Remember that a sieve bed can be replaced when needed to help operate the device smoothly.

Warm Up Time

The Inogen One G5’s warm-up period will take about 2 minutes. If you stored your device at a much colder temperature, you must consider putting in additional warm up time.

Oxygen Concentration

The Inogen One G5 is already close to oxygen therapy and an ideal concentrator that can be set for any setting. This device can operate from setting 1 to 6 with a 90% oxygen concentration level.


The Inogen One G5 is one of the most potent concentrators because it is a lightweight and compact model. However, if you still wonder about the Inogen One G5’s capacity, you will be impressed because it offers 1,260 mL per minute. This is actually a good factor because it adds to the value and quality of the device.


The Inogen One G5 has a replacement filter that is helpful for oxygen patients. It helps ensure that the oxygen is clean, meaning that there should be no airborne contaminants and allergens visible in the device.

Remember that a filter must be located at the device's intake ends while doing the operation to maintain cleanliness.

Available Accessories

The Inogen One G5 also has its own accessories that you can purchase, which might help you operate the device efficiently. To be familiar with these, you can check out the list below.


The Federal Aviation Administration or FAA allows the Inogen One G5 to be used and operated in various international airlines, including the United States. This ensures that people will follow the safety rules and regulations.

Please take note that oxygen devices are not allowed in aircrafts because they might bring some risks and incidents. However, you do not have to worry because the FAA has already approved the Inogen One G5. If you have travel plans with the device, you must call the airline first within 48 hours.

International Approvals 

The Inogen One G5 is already approved internationally. Similar to the FAA-Approval, the G5 is already accepted in the market, where guests can feel safe and comfortable with it. 


The Inogen G5 can perfectly operate up to 10,000 ft or 3,048 meters in altitude. Although, make sure to be observant because there are cases where you will be required to perform some replacements on-air.


If you are worried that something might happen to your Inogen One G5, don’t worry because the device has its own warranty. You can file for it and they will accommodate your concerns.

For your information, there are different warranties per classification, and you can identify them below.

  • A 3-year warranty is given to the unit
  • A 1-year warranty is dedicated to batteries
  • A 90-days warranty is granted for other accessories related to the device

Manufacturer Country

The Inogen One G5’s manufacturer country is located in Goleta, California.


The price of the Inogen One G5 still depends on where you will buy the product. Some may sell it at a higher price, and some do not. With this, a buyer or a patient should prepare at least $2,000 to $3,000. 

Available Inogen One G5 Discount

You can get your own Inogen One G5 at 25% off at our shop.

Inogen One G5 Alternatives

At this point, you may have concluded that the Inogen One G5 is either an amazing or insufficient device for your needs. If you are looking for alternatives, below are some of the suggested products you can rely on:

1. Invacare Platinum Portable Oxygen Concentrator

This product is ideal for short and long-term conditions. It is also lightweight, just like the Inogen G5, making it comfortable and travel-friendly. Do not worry about the battery because you can immediately recharge it as long as you have the appropriate power source.

Moreover, this product also has a mobile app where they can monitor the patient's status. It is also water-resistant, indicating that it is safe to use.

2. Philips Everflo

The remarkable thing about the Philips Everflo is that it is a low-maintenance oxygen concentrator. It has a small design, allowing a person to roam around the house while using it. 

3. AirSep Focus

AirSep Focus is one of the smallest portable oxygen concentrators in the market. This product is best for patients who need a supplemental oxygen level to achieve daily activities. 

FAQs About Inogen One G5

How reliable is Inogen?

If we are talking about an oxygen concentrator, Inogen offers are very reliable. They keep on inventing and introducing reliable, trusted, and innovative products that can deliver good quality oxygen levels.

How many liters of oxygen does the Inogen G5 produce?

The Inogen One G5 can continuously provide 5-10 liters of oxygen.

Does Inogen 5 have continuous flow?

Yes. The Inogen One G5 provides a continuous flow, addressing all the needs of the patients. This is a way for you to get enough oxygen or the exact amount of oxygen you will need.

How quiet is the Inogen G5?

The Inogen G5 is so quiet to the extent that it is recommended for traveling. The average volume or sound of this device is said to be 39 decibels, similar to how quiet a library is.

How long do Inogen G5 columns last?  

A G5 column lasts for about 18 or 24 months in some cases. If the columns already lasted, you must replace them to operate the device smoothly. However, it would be best if you remembered that it should only be changed when needed, so make sure to be observant.

Is The Inogen One G5 The Right Portable Oxygen Concentrator For You?

Before you purchase a product like the Inogen One G5, you have to identify all the essential details so you would know if it is worth it to buy or not. You can do your research or base it on Inogen G5 oxygen concentrator reviews to know whether this device is already suitable for you.

Upon knowing all the features, advantages, and functions of this device, do you want to purchase the Inogen One G5 right now? Don’t worry because you can check out the product in SpryLyfe without experiencing any difficulties.

If you have questions, concerns, and inquiries, the team will be ready to accommodate you. You can also visit and explore our portable oxygen concentrator collections, or you may call us at (800) 314-8225, so we can assist you.
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Naeem Khan - April 9, 2023

Dear representative
My mother having copd. PF..Doctors recommended to use oxygen at home especially while sleep and if after the normal walk saturation go down below for the time being we are using Philips ever flow once the level goes down.. I want your suggestions to buy inogen 5 note my mother current oxygen dose is 2LPM…SO PLEASE suggest that inogen 5 will be the right product for my mom.
00973 33644528 whatsup

Melvin K Jackson - December 26, 2022

I’m interested in an Inogen G5.
Is it continuous flow or pulse flow? I am wanting continuous flow. I understand it includes oxygen delivery up to and including 6 liters.
What is the warranty, price, and delivery?

Bruce Exum - December 2, 2022

What is the warranty on this machine?

Maary D. Nelson - September 15, 2022

I will be completing my pulmonary rehab program at St. Mary’s Reg. Med Cent. and am looking for a portable concentrator; The Inogen G5 appears to be the most appropriate one.
Question, with the the extended batteries, can I use it at night in place of my “monster”, heavy duty concentrator? Does it charge itself while also in use? It would be more convenient than hauling a big time concentrator to a hotel, etc. Also, please provide cost. I’m an 89 yr old, running around in worn out Nike’s, and need financial breaks.
D. Nelson

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