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Introducing the smallest portable oxygen concentrator from the most popular brand, Inogen. The Inogen One G4 is capable of providing oxygen delivery in an unbelievable small and quiet package. With flow settings from 1-3, the Inogen One G4 is designed to increase independence for most users 24/7. It can be charged at home or on the go - giving you the freedom you deserve.
The Inogen One G4 provides you with three separate oxygen flow settings. It also includes Inogen’s Intelligent Delivery technology, which sets it apart from the competition. This innovative system rapidly detects a breath and delivers oxygen in the first 400 milliseconds. This is critical because this period is when the most gas exchange occurs in the lungs. Delivering oxygen at the start of a breath ensures that the oxygen is used more efficiently by your body.
At only 40 decibels, the G4 produces less noise than a normal indoor conversation. This means you won’t disturb others when you use your oxygen concentrator and will feel more comfortable in social settings. It’s also great in quiet environments when you want to be unobtrusive.
Furthermore, Intelligent Delivery accurately detects your breathing rate and adjusts the oxygen level provided accordingly. If you’re exercising or physically active, the unit will provide smaller, quick bursts of oxygen to satisfy your energy needs. However, during rest or sleep, the system provides larger oxygen boluses more slowly to correspond with your decreased rate of respiration. This means the G4 can effectively be used during sleep at night, an area where many other portable oxygen concentrators fall short. With the G4, you won’t need separate oxygen systems for the day and night.
The Inogen One G4 comes with a 3-year warranty covering the concentrator. There’s also a 1-year warranty that covers the sieve beds and accessories, so your entire system is protected. The starter package comes with the Inogen G4 unit, single battery, AC power supply, DC power cable, carrying bag, cannula, and manual.
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.
Review by Marty on 12/22/2018
Noisy and tubing smells
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.
Review by Richard O`Molony on 8/22/2018
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
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.
Review by Marcia McGee on 8/12/2018
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.
Review by BC on 6/4/2018
Would love to get the Inogen but I need the setting to go up to at least 4
Need setting to go up to at least a 4. Love the fact it is only 2 lbs.
Review by James Shelton on 2/11/2018
Excellent Oxygen Equipment
I absolutely love my Inogen G4 concentrator in every way possible. I will be buying the Inogen GS-100 for home use very soon. Great on-line company to work with also...
Review by Larry Moody on 11/9/2017
Equipment and customer service review
Great machine. I've had my G4 for a few days over one year. It travels with me on the plane, in my car and runs non stop while I sleep. It gets a lot of use. Two days ago it started to make a knock/vibration when on level 1 or 2. I called the customer hot line yesterday, mid PM, a lovely lady named Emily, listened to my problem, listened to the machine sound and assured me a replacement G4 would be sent to my home. Today UPS was at my door, early AM with a replacement, waited for my machine to be packed for return, to complete the transaction. WOW!! Did not expect over night. Great service. Thank You.
Review by Max on 8/3/2017
Unit is great but the strap broke less than one year in service.
Review by Gil on 2/2/2017
I have been using this unit for 4 months now. I has not skipped a beat.... I bought the bigger battery but I have never even go close to using all of it.. I put it on charge when in my truck.. and on charge when home or in the office... I have gone 5 hours on a setting of 2 and still had 25% left.. I find it amazing how this little unit can do what it does and be so quiet at the same time.
Review by Marco Polo on 9/25/2016
Runs hot and 3L Pulse
This unit is great if you need 2L on pulse while mobile; easy to carry and quiet. Very warm as the exhaust is vented on both sides...so great in the winter, not so great around the house/office. Buying a lighter unit is great unless your situation gets worse, then you have to upgrade and upgrade again.