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Inogen Portable Oxygen Concentrator Review

Editor's Rating:

4.8 / 5

Inogen, Inc. is a manufacturer of the Inogen One Family of Portable Oxygen Concentrators (POCs). The business name is derived from the phrase “innovative oxygen.” Their staff of oxygen specialists and tech designers aim to improve the quality of life for those who need portable oxygen, as effectively and elegantly as possible.

Besides offering among the most discreet and lightest-weight equipment in the industry, the founders of Inogen are determined to help their clientele experience an ever-more satisfying, “normal” lifestyle. The staff understand that a breathing issue should not and need not stand in the way of anyone living a full life.

The three systems (aka packages) are competitively priced and come with all the essential components. Optional accessories are available. All Inogen products are made in the USA.

Inogen Portable Concentrators – Pricing

Inogen One G3 System

Freedom Package 1 – Regularly $3,495. Current sale price: $3,195.
System includes: 3 Single Batteries, a Concentrator, a Lifetime Warranty, AC/DC Power Supply, a Carry bag, and User Manual.

Freedom Package 2 – Regularly $3,495. Current sale price: $3,195.
System includes: 1 Single Battery, 1 Double Battery, a Concentrator, a Lifetime Warranty, AC/DC Power Supply, a Carry bag, and User Manual.

Freedom Package 3 – Regularly $3,765. Current sale price: $3,465.
System includes: 2 Double Batteries, a Concentrator, a Lifetime Warranty, AC/DC Power Supply, a Carry bag, and User Manual.

Product Details: Weight: 4.8 lbs.; Dimensions: 7.25” high x 8.75” long x 3” wide; Flow Settings, 1 – 5; Battery duration: Single Battery up to 4.7 hours, Double Battery up to 10 hours. Inogen One G3 is not Bluetooth ready.
Accessories: Replacements available for items in system package, plus a G3 External Battery Charger, a G3 Backpack, G3 Particle Filters, and G3 Replacement Column Pairs.

Inogen One G4 System

Freedom Package 1 – $3,495.00 (Current sale price: $3,195)
System includes: 3 Single Batteries; AC Power Supply; DC Power Cable; Carry Strap; Carry bag; User Manual.

Freedom Package 2 – $3,495.00 (Current sale price: $3,195)
System includes: 1 Single Battery, 1 Double Battery; AC Power Supply; DC Power Cable; Carry Strap; Carry bag; User Manual.

Freedom package 3 – $3,765.00 (Current sale price: $3,465)
System includes: 2 Double Batteries; AC Power Supply; DC Power Cable; Carry Strap; Carry bag; User Manual.

Product Details: Weight: 2.8 lbs.; Dimensions: 7.2” high x 5.91” long x 2.68” wide; Sound level: 4.2 dBA at level 2; Flow Settings: 1 – 3; Battery Duration: Single Battery up to 2.7 hours, Double Battery up to 5 hours; Inogen Connect: Bluetooth Mobile App.
Accessories: Replacements available for items in system package, plus a G4 External Battery Charger, G4 Replacement Column Pair, G4 Backpack, G4 Hip Bag, and a G4 Particle Filter.

Inogen One G5 System

Freedom Package 1 – $3,895 (Current sale Price: $3,295)
System includes: 3 Single Batteries; AC/DC Power Supplies; Carry Strap; Carry bag, User Manual; Bluetooth System; Inogen Connect App.

Freedom Package 2 – $3,895 (Current sale Price: $3,295)
System includes: 1 Single Battery, 1 Double Battery; AC/DC Power Supplies; Carry Strap; Carry bag, User Manual; Bluetooth System; Inogen Connect App.

Freedom package 3 – $4,165 (Current sale price: $3,565)
System includes: 2 Double Batteries; AC/DC Power Supplies; Carry Strap; Carry bag, User Manual; Bluetooth System; Inogen Connect App.

Product Details: Weight: 4.7 lbs.; Dimensions: 8.15” high x 7.19” long x 3.26” wide; Sound Level 38 dBA at setting 2; Flow Settings 1 – 6; Battery Duration: Single Battery up to 6.5 hours, Double Battery up to 13 hours; Inogen Connect: Bluetooth Mobile App.
Accessories: Replacements available for items in system package, plus a G5 External Battery Charger, G5 Replacement Column Pair, G5 Backpack, and a G5 Particle Filter.

Best Value: The Freedom Bundle, which covers the user both at home and on the road. Combines the Inogen At Home Concentrator with either the Inogen G4 or the G5 for excursions. Overall savings of $395. The G4 or G5 has a lifetime warranty; the At-home Concentrator has a 3-year warranty.

System includes: Items listed for G3, G4 or G5 above plus the Inogen At Home Concentrator; AC Power Cord; User Manual; 3-Year Warranty.
Product Details: Weight: 18 lbs.; Dimensions: 16.5” high x 7” deep x 13” wide; Flow Settings 1 – 5; Power Settings: AC Power Supply 100-240V, 275W, 50-60Hz. Only 100W on Flow Setting 2.

The Stuff We Liked

Lightweight and unobtrusive, the portable concentrators refill themselves. No more keeping an eye on the dial or planning your excursions around how much oxygen you have and where you would have to be to refill. Here are some of the other desirable features of Inogen concentrators.

  • No long-term contracts
  • A 30-day free trial period
  • Free overnight shipping
  • All Inogen product is made in the USA
  • Allows the user to shop, dine out, travel, to live life to the full
  • Each POC package comes with all that will be needed: batteries, power cords, a carrying case and whatever else is appropriate
  • The in-home concentrator may be unnecessary because the Portable Oxygen Concentrators can be used both when traveling as well as in the home.
  • Each POC package has a lifetime warranty. The in-home concentrator comes with a 3-year warranty.
  • The highly educated staff of oxygen specialists are available to assist the client in selecting the appropriate equipment, in maintaining that equipment, and to answer any questions the client may have.
  • All Inogen products are FAA approved
  • There are three POC packages (G3, G4, and the recently released G5), each suitable for the specific health needs as defined by the user’s physician.
  • The differences in price per package are largely related to the battery or batteries involved.
  • The POCs are designed to run 24/7 so can be used even while one is sleeping.
  • The heaviest of the three POC packages weighs 4.8 pounds.
  • The portable units dispense with the need for a separate tank because they are self-filling. The Inogen system simultaneously draws oxygen from the surrounding atmosphere while also purifying that oxygen.
  • Pulse flow is easy to set
  • For G-3, battery duration of up to 4 hours. Charging time: 1 battery, 2-4 hours; double battery, 4-8 hours.
  • Can charge machine while in it is in use or wait to charge when not needed
  • The POCs require only light maintenance. The sieve beds, unlike other brands, can be easily replaced by user.
  • The rechargeable batteries are both ecologically sound and highly cost-effective
  • Accessories include a backpack (with or without wheels) for those who prefer this to a shoulder-bag style
  • The large, visible LCD screen not only allows the user to set functions but also alerts (via digital message and sound alarm) the user to issues including whether the unit needs charging, or is overheating, among other possible issues
    Inogen provides full manuals, plus instructive videos at the website, to illustrate use and maintenance of the equipment

The Stuff We Didn’t

  • Does not have continuous flow functionality, offering only pulse flow. Technology has not yet devised a way to permit such a small, portable machine to emit continuous flow oxygen.
  • Inogen offers a variety of battery choices as just one of their batteries lasts only about 2.7 hours while other companies provide single batteries that endure for 3, 5, and in at least one case, 10 hours.
  • Though generally quiet, the highest setting may be distractingly noisy

What Customers Are Saying about Inogen Portable Concentrators: Pros and Cons

Inogen G-3

Pros:

  • Large, easy to read settings and on/off button
  • There are five pulse flow settings
  • Suitable for home, road or boat trips, and air travel
  • Though somewhat bigger and heavier than the G-4, the G-3 does have five pulse flow settings instead of three, providing more oxygen and longer-lasting batteries
  • No oxygen tank needed as the unit replenishes itself from the surrounding atmosphere
  • The battery can last up to 5 hours with the 8-cell battery or up to 9.5 with the 16-cell
  • Built-in safety features like breath detection light and various alarms in case of overheating, etc.
  • At 4.9 pounds (with the 8-cell battery), this is one of the smallest concentrators available that delivers this level of airflow
  • User-replaceable sieve columns and easy maintenance in general
  • The pulse flow vs. continuous flow extends battery life.
  • Comes with carrying bag, but the backpack is well-designed to hold concentrator and accessories, keeps concentrator cool.
  • Further frees up the user.
  • Shipping was fast. Overnight delivery was common.

Cons:

  • Many, while praising the design of the backpack, complained about the cost
  • Some customers complain about the difficulty in contacting customer service
  • Some customers found the backpack, though well designed, was uncomfortable because of the weight of the concentrator

The bottom line: Though somewhat heavier and larger than the G-4, the increased size means this concentrator offers higher oxygen settings, suitable for those with more severe breathing issues. Overall, there seems to be a high level of satisfaction not only with the equipment but also with the customer service.

Inogen G-4

Pros:

  • The variety of battery and power options
  • No oxygen tank needed
  • The two battery options. The one-battery unit is a mere 2.8 pounds. The two-battery version (providing just over five hours of use before recharging is necessary) is only 3.5 pounds.
  • The G-4 is a smaller unit than the G-3, which is why it provides only three pulse flow settings vs. the G-3’s five
  • Can be recharged (from a regular outlet or a car charger) while in use
  • Noise level is not intrusive
  • User-replaceable sieve columns and easy maintenance
  • The pulse flow vs. continuous flow extends battery life
  • A backpack is available

Cons:

  • That it is pulse flow only, with three settings. Though Inogen claims that it supplies a specific amount of oxygen with each breath taken, not all customers or health care professionals agree that that information is strictly accurate.
  • G-3 has a separate carrying case while G-4 has a very snug-fitting sleeve with both a snap and a zip closure. Note that recharging the battery/ies requires removing the concentrator from the sleeve, but the sleeve fits so tightly it can be difficult for some people to remove it, replace it, or close it.
  • The concentrator has a vent on both sides to release heat. As some customers have said, this is great in winter, but can get uncomfortable for the customer in warmer weather
  • Batteries may not last as long as manufacturer claims

The bottom line: Customers by and large regard this as a great portable unit, lightweight and easy to use. Customer service was generally rated highly. Best for those needing only low oxygen settings. The G-3 or G-5 would be more suitable for those with advanced respiratory conditions.

Inogen G-5

Pros:

  • The G-5 offers increased airflow with six pulse flow settings vs. 5 for the G-3 and three for the G-4. This renders it even more powerful than the stationary, in-home concentrator.
  • It also has longer battery life. The double battery can last as long as 13 hours.
  • The noise level is even lower (if only by a decibel) that the earlier models but is a decrease.

Cons: Nothing to report.

The bottom line: Only just recently released, there are no customer reviews available.

Inogen 5-L At-home Concentrator

Pros:

  • Only weighs 18 pounds, 13 pounds lighter than the nearest equivalent. The smallest unit of its kind on the market, it’s easier to place in an out of the way spot.
  • Low maintenance
  • Most customers reported it as being quiet enough to not be a distraction
  • Excellent source of continuous flow oxygen, particularly at night
  • Most customers praised the customer support

Cons:

  • Some customers reported dissatisfaction with customer service. Parts, or replacement machines, that were expected to arrive either overnight or within two days took substantially longer.
  • Some complain that when shifting to higher flow settings, the sound increases dramatically. Also, a “popping” noise may occur.

Inogen Portable Oxygen Concentrators Review: Final Verdict

Inogen, Inc. products are, overall, rated highly by customers and health care professionals for the quality of the equipment as well as customer support. For nearly 20 years, Inogen has striven to promote a sense of freedom and ease for those who experience COPD and other respiratory issues. Judging by the improvements they made in the G-5, they are paying attention to their customer reviews.

Though there are many companies producing such equipment, Inogen Portable Oxygen Concentrators stand out. Their lightweight and compact equipment, at competitive prices, combined with the staff’s continued efforts to improve on their already progressive designs, sets Inogen apart from the rest.

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