Find an Oxygen Concentrator Review

Comprehensive reviews of Stationary and Portable Oxygen Concentrators by Oxygen Times.

Portable Oxygen Concentrator Reviews

AirSep Freestyle 5 (Pulse Flow)

AirSep Freestyle 5 Portable Oxygen Concentrator Airsep Freestyle 5 is the latest Pulse Flow Portable in AirSep’s product line. The 2.8kg POC can be carried on shoulder or back and provides flow upto 5 pulse setting.
What you would like about Airsep Freestyle 5: Most sensitive pulse trigger in market, Success of predecessor Freestyle 3…
What you won’t: Not so light to carry especially for old people, No continuous flow option available Read more…

Inogen One G3 System (Pulse Flow)

Inogen One G3 System Portable Oxygen Concentrator Another remarkable portable oxygen concentrator (POC) by Inogen, G3 System provides flow upto 4 pulse settings with exciting features like user replaceable sieve beds and text display…
What you would like about Inogen G3: LCD Screen to display important parameters like flow, estimated time remaining on the battery…
What you won’t: No continuous flow Read more…

AirSep Focus (Pulse Flow)

AirSep Focus Portable Oxygen Concentrator Airsep Focus is the smallest Portable Oxygen Concentrator (POC) in market. The product with certain flow limitations is smallest and lightest from all its competitors. It seems that the product is designed for active patients who need ‘little’ supplemental…
What you would like about Airsep Focus: Extremely light – 800 grams, Palm sized – Smallest POC in market …
What you won’t: Battery not inside the machine. Read more…

SeQual eQuinox (Pulse cum Continuous Flow)

SeQual eQuinox Portable Oxygen Concentrator Last year when SeQual launched Eclipse 5, it seemed like there could never be a better continuous flow POC but recently SeQual itself introduced a remarkable model eQuinox which is smaller…
What you would like about SeQual eQuinox: Multi language voice interface, Sensitivity Adjustment, 9 pulse …
What you won’t: Low Battery Duration with default battery. Read more…

Home Oxygen Concentrator Reviews

Inogen At Home (5LPM)

inogen at home thumbnailInogen has always astonished its customers and this time it is no different as its latest launch, Inogen At Home seems like the best home oxygen concentrator in market. With user replaceable…
What you would like about Inogen At Home: Light Weight - 18 lbs (8.16 kg) - 40% lighter than the competition, Small Size, Lowest power consumption in market - 100 W @ 2 LPM…
What you won’t: New in market - credibility yet to Read more…

AirSep VisionAire (5LPM)

AirSep Visionaire Oxygen ConcentratorFollowing the success of AirSep Newlife Elite; AirSep VisionAire was launched as one of the best continuous flow stationary oxygen concentrator with some major spec improvements like power consumption, weight, size and more.
What you would like about Airsep VisionAire: Light weight (13.6 kg) compared to other stationary competitors, Quiet operation …
What you won’t: Difficult to recognize alarms Read more…

AirSep NewLife Elite (5LPM)

AirSep Newlife Elite Oxygen ConcentratorOne of the earliest entries in Oxygen Concentrator industry; Airsep NewLife Elite has been a consistent performer known for its reliability.
What you would like about Airsep NewLife Elite: Outlet pressure of 8 psi as compared to 5.5 psi of Philips and Invacare, High quality compressor…
What you won’t: About 30% heavier and bulky than most than most of the new competitors, 48dB of sound Read more…

Caire Companion 5 (5LPM)

Caire Companion 5 Oxygen Concentrator thumbnailLaunched in 2014, Companion 5 is the 1st oxygen concentrator marketed under the brand name Caire (A Chart Industries Company). This product comes almost 2 years after acquisition of AirSep by Chart.
What you would like about Caire Companion 5: LCD Screen, Less number of parts inside the machine – Low breakdown …
What you won’t: About 20% heavier than the competition, Low Output Pressure Read more…

Philips Respironics Millenium M10 (10LPM)

Philips Respironics Millenium M10 Oxygen ConcentratorPhilips Respironics Millennium M10 is a high flow stationary concentrator that provides continuous flow upto 10LPM. The concentrator has a unique feature of filling oxygen cylinders…
What you would like about Philips Respironics Millennium M10: Separate visual indicator for each type of alarm,
What you won’t: Operational altitude is just upto 1,368 feet (417m) which is too low as compared to 10,000 feet (3,048m) Read more…


Posted from India on: 2017-12-21 at 05:58:16
Oxygen Times
Replied on: 2017-12-21 at 06:09:38
Hi Viswanatham, the Airsep intensity 10 will be much better than any two 5 LPM concentrator combined due to its high psi.
Posted from India on: 2017-12-06 at 03:34:27
I have invacare platinum 9 OC in my clinic. it goes off if the flow rate is more than 4 L/min.. where is the problem ? i use for nebulising children with asthma along with a nebuliser.
Oxygen Times
Replied on: 2017-12-06 at 03:50:51
Hi Mahender, what type of alarm is the machine giving?
Mauriel Carla
Posted from Indonesia on: 2017-06-14 at 22:05:38
Hi, we are currently in need of your parts of Airsep Oxygen Generator. My question do you have an agen in Indonesia? or should we ask for a quotation from India?
Oxygen Times
Replied on: 2017-06-14 at 23:00:56
Hi Mauriel, Oxygen times is an informational website where we provided reviews and comparison of different oxygen concentrator. We don't sell oxygen concentrators.
Margaret Beauchamp
Posted from USA on: 2017-05-22 at 00:06:01
My concentrator also has white powder coming from somewhere, it's on the floor on the black filter, the cord and inside the machine, what is the powder and will it harm a person, I have a headache and am stating at 87 on 2 liters and a pulse rate of 120. My normal is 96 (02) 86 (pulse) I am worried the white will reduce my FEVl etc. and my health period
Oxygen Times
Replied on: 2017-05-22 at 23:41:42
Hi Margaret, the white powder is coming from the sieve beds. You will have to take the oxygen concentrator to your equipment provider to get the sieve beds checked. Most likely, they will be replaced.
Shaik Khaleel
Posted from india on: 2017-03-21 at 21:09:57
Hi , i am confused on what to choose between invacare
Oxygen Times
Replied on: 2017-03-22 at 05:58:59
Hi Shaik, you can compare the oxygen concentrators by following this link. Also, you can check the Oxygen Times ratings for different concentrators. Hope this helps!
Arpan M pednekar
Posted from india on: 2017-03-17 at 06:29:56
which oxygen concentrator is good as per warranty.
Oxygen Times
Replied on: 2017-03-24 at 07:20:00
Hi Arpan, Philips repironics and Invacare provide 3 years of warranty on their stationary models whereas the other major manufacturers provide 2 years of warranty.
Posted from Usa on: 2017-02-06 at 22:21:07
They said my friend needed a 15 lpn do they make a machine that will produce this
Oxygen Times
Replied on: 2017-02-16 at 01:42:34
Hi Kevin, as of now, there are no oxygen concentrator that provides more than 10 LPM of oxygen.
Posted on: 2016-12-12 at 02:59:23
Which portable battery operated oxygen concentrator should I buy for my father for air travel. He is COPD patient using continuous flow Airsep Visionare upto 5LPM at home.
Oxygen Times
Replied on: 2016-12-28 at 22:20:12
Hi Javed, this link has the list of all FAA approved portable oxygen concentrators. If your father is already using AirSep VisionAire, then AirSep Freestyle 5 would be a good option to choose. If his requirement is less than 3 LPM, then you can go for Freestyle 3 POC.
Posted on: 2016-10-22 at 12:58:57
Wich stationaary concentrator is better devilibis or everfloo, thanks!
Oxygen Times
Replied on: 2016-10-23 at 23:00:22
Hi Luis, as per our latest rating for stationary oxygen concentrators, DeVilbiss 5LPM Concentrator is slightly better than Everflo.
Debasis Ray
Posted from India on: 2016-09-25 at 11:42:23
I wish to buy a Philips Respironics Everflo for my mother. Can it be used 24X7 continuously without rest? Thanks.
Oxygen Times
Replied on: 2016-10-04 at 01:31:59
Yes you can use it 24x7. But it is recommended to give your machine rest of about 20-30 minutes after every 8 hours of use.
Posted from México on: 2016-09-21 at 02:49:35
Hello im from México, I have a question. My father needs a stationary concentrator, he only needs 2lpm at night so that he oxygen levels stay at 92,95 , i was looking at everflow philips, is this a good brand, and how much is the purity of the oxygen it produces. Sorry for me english:(
Oxygen Times
Replied on: 2016-09-23 at 00:19:21
Hi Ricardo, Philips Everflo is a good stationary oxygen concentrator. Its oxygen purity is normally 90-95%.
Deepak Natekar
Posted from India on: 2016-09-09 at 06:08:39
My sister suffering from Non tuberculosis mycobatarium. I am thinking oxygen therapy for her. Which doctor should I consult?
Oxygen Times
Replied on: 2016-09-23 at 00:30:40
Hi Deepak, we don't have database of Doctors with us. You can find a good doctor for your sister on Practo.
Risa Silverman
Posted from USA on: 2016-09-07 at 08:44:30
We purchased the newest Inogen one - G4 model 2 weeks ago. I was concerned that there might be issues with a brand new product , but the size and light weight makes it much easier for my husband to get around. Within the first week- 2 machines gave us a "system error" message which indicates machine is totally not producing oxygen. We are currently on the third machine which yesterday, after 2-3 days of use gave us a "system hot" high priority message. After 1/2 hour my husband turned it back on and it was working- which is exactly what happened with the first machine after 3 days, until it gave us "system error" message 2 days later. I really do not know what we should do at this point. The G4 with all its advantages seems to have some major design flaw. One of the several Inogen people on the 24 hour hot line admitted that they had been receiving numerous complaints about "system hot" messages on the G4. My husband is at a 2 lpm pulse dose , but we need a machine that we can rely on. Should we opt instead for the Inogen 3, despite the fact that it is twice as heavy, or stay with the G4 and expect that Inogen will work out the design flaw ASAP. We purchased the machine with a lifetime warrantee. But, as you can imagine , the last thing we want is to have an unreliable piece of life support equipment and to be waiting for UPS to arrive every few days with a new machine. I would greatly appreciate your advice and suggestions on this matter.
Oxygen Times
Replied on: 2016-09-23 at 00:34:00
You can try AirSep Freestyle 3. It is in market for quite some time now and its users seem to be happy with the machine.
Dr San Prasad
Posted on: 2016-09-06 at 14:29:48
Best oxygen concentrator for hospital use
Oxygen Times
Replied on: 2016-09-23 at 00:22:12
Dear Dr Prasad, AirSep Newlife Intensity 10 with 2 oxygen outlets is the best high flow stationary oxygen concentrator for hospital use.
Rhoda Fish
Posted from USA on: 2016-08-24 at 17:00:02
My mother retains CO2 and needs to set O2 flow to maintain PaO2 between 88 and 92 and not greater. Her flow rate is between 1-2lpm and when close to 1 her current concentrator alarms for ? low flow. Are there any which will deliver less than 1lpm?
Oxygen Times
Replied on: 2016-08-29 at 00:17:38
Hi Rhoda, we never came across any concentrator that delivers less than 1 LPM oxygen. May be a paediatric flowmeter would work for her.
Arnab Roy
Posted from India on: 2016-08-08 at 00:12:47
Hi, what do you recommend me to check at the minimum if I go for a used O2 concentrator?
Oxygen Times
Replied on: 2016-08-10 at 01:48:44
Hi Arnab, firstly, make sure the machine is not giving any visual or audible alarms. Secondly, try to get a purity check using oxygen analyser from a service centre. We have a pre-delivery inspection checklist which people use before buying a new oxygen concentrator, some points can be useful for you too.
Lila Bahadur Raut
Posted from Nepal on: 2016-08-04 at 06:35:28
My daughter is suffering from ILD for 15 years and now need 24 x 7 Oxygen when she catches some infection. We purchase one Portable Oxygen Concentrator of Chinese brand it just work for about 15 days , Now she is on Oxygen Cylinder supplement . Which of the Portable Concentrator we should buy to make her more comfortable, useful in Car travelling and also by Air travelling ? Be kind to reply me as soon as possible.
Oxygen Times
Replied on: 2016-08-10 at 01:41:14
How much oxygen (in LPM) has been prescribed to your daughter?
Varun Mittal
Posted from India on: 2016-05-12 at 03:04:11
We need an OC for my father with the flow requirement of 2-3 LPM. Should we buy a machine of upto 3 LPM machine (e.g. Philips K3B) or should go for 5 LPM machine.
Oxygen Times
Replied on: 2016-05-12 at 04:20:49
Hi Varun, you can definitely go for Philips K3B but we would strongly recommend you to buy a 5LPM concentrator so that if the oxygen requirement increases in future you dont have to buy a new one.
Replied from India on: 2016-05-16 at 01:33:58
Hello Mr Mittal, 5 LPM machine is recommended, you can get from us being the distributor of Philips at a very reasonable rates.
Replied on: 2016-07-12 at 01:17:31
Varun u should go for 5 LPM . And for any need of equipment u can drop a mail to me. We can provide solution to your need if u require to purchase it or rent it. Let me know
Posted from India on: 2016-04-21 at 05:22:28
I want to buy Oxygen concentrator. Which is better among these have a long life time and warranty? Can u please tell me?
Oxygen Times
Replied on: 2016-04-24 at 01:56:04
Hi ReddypoguPriya, you can refer to our oxygen concentrator ratings and ranking for 2015. Almost all concentrators by top manufacturers are equally good in terms of life.
Posted from India on: 2016-04-18 at 03:47:19
Can you give information about EverFlo Oxygen concentrator from Philips Respironics. How much Flow rate and how many years warranty?
Oxygen Times
Replied on: 2016-04-24 at 01:51:39
Everflo is a good 5LPM home oxygen concentrator. The warranty that most dealers provide on this machine is 3 years.
Stuart Inglis
Posted from Australia on: 2016-04-17 at 21:53:18
Any chance you have reviewed oxygen concentrators in terms of cost?
Oxygen Times
Replied on: 2016-04-24 at 01:46:18
Hi Stuart, the reviews are not in terms of cost.
Sue Frisch
Posted on: 2016-03-24 at 14:25:14
You do not mention the OxLife continuous flow machine in your review. Why?
Oxygen Times
Replied on: 2016-03-30 at 03:57:33
Hi Sue, there are a lot of concentrators available in market that we have not reviewed yet. We will be writing more reviews soon. Stay tuned.
Posted from India on: 2016-03-07 at 09:01:34
My baby was born in 6.5 month, he is in nursery for past 2.5 months, his oxygen problem is not solving. Now doctors want to leave him but are suggesting to buy an oxygen concentrator. So what type of concentrator should I buy - continuous or pulse and if pulse then of what LPM?
Oxygen Times
Replied on: 2016-03-30 at 03:45:51
Hi Anjali, you can go for a continuous flow oxygen concentrator which provides oxygen less than or equal to 5LPM. Consult your doctor to know about your baby's oxygen requirement in LPM. The requirement should be less than 1 LPM for such a small baby and there are special flow meters for neonates that can be used to deliver flow less than 1 LPM.
Replied from India on: 2016-06-15 at 06:54:48
Hi Anjali, you can go for Continuous flow oxygen concentrator . The Flow should be conformed by your doctor.
Posted on: 2016-02-12 at 19:17:38
Which is better Philips everflo or devbliss . Also does the difference in psi matter ?
Oxygen Times
Replied on: 2016-02-14 at 05:12:44
Hi Tara, as per our ratings for 2015, DeVilbiss is slightly higher in rank as compared to Philips Respironics Everflo. Even though output pressure does not make much of a difference in most cases, it is helpful when a person needs a strong throw of oxygen to reach deep inside the lungs like in case of ILD. Also, higher pressure helps in sustaining a good throw of oxygen when using longer oxygen tubes or when tubes have kinks in them.
Sue Irvine
Posted from USA on: 2016-02-02 at 18:16:15
I was told the Invacare Perfect 02 had a high failure rate? I need a good machine.
Oxygen Times
Replied on: 2016-02-14 at 05:01:57
Hi Sue, AirSep VisionAire, AirSep Newlife Elite, Philips Respironics Everflo and Nidek Nuvo Lite are some of the reliable oxygen concentrators available in market.
Posted from United States on: 2016-01-31 at 21:13:48
For EWOT what oxygen concentrator is the best 10LPM and quite
Oxygen Times
Replied on: 2016-02-14 at 04:58:35
Hi John, as per our ratings AirSep Intensity 10 is the best high flow oxygen concentrator available in market.
Saverio Salvi
Posted from Italy on: 2016-01-30 at 09:01:30
I have to buy oxygen concentartor(s) for my mother. She wants to continue to make long travel so I'm thinking about a portable an home concentrator. Could you give me a suggestion about a good combination of the two concentrators (weight, power consumption, possibility to be used on flights ...)? Many thanks in advance and best regards. Saverio
Saverio Salvi
Replied on: 2016-01-30 at 09:08:02
Sorry, in my previuos comment I forgot the most important information: pulse flow at 2 LPM for the portable concentrator. Have a nice day. Saverio
Posted from USA on: 2016-01-05 at 10:14:22
Can you give me any information on the Everflo stationary oxygen concentrator 5L? In particular the quality of the machine. I don't seem to be getting adequate oxygen.
Oxygen Times
Replied on: 2016-01-19 at 23:27:23
Hi Teresa, Philips Respironics Everflo is a reliable machine. If you feel you are not getting sufficient oxygen then either your oxygen requirement has increased or your machine requires a service. Contact your physician 1st and then the equipment provider. Also check if you are getting any alarms in the machine. Hope this helps.
Salem Swayah
Posted from Libya on: 2015-11-24 at 14:47:06
What are the factory prices for Inogen One G3 and Airsep Freestyle 5?
Oxygen Times
Replied on: 2015-11-24 at 14:48:54
Dear Swayah, we dont sell oxygen concentrators. Oxygen Times is a review and comparison website only.
Christina Smith
Posted from Bahamas on: 2015-10-02 at 11:38:15
Need a small battery powered oxygen concentrator which doesn't cost an arm and a leg. Already have an excellent philips plug in for home use, perhaps three or four times a day. Need the small one for occasional travel.
Oxygen Times
Replied on: 2015-10-06 at 10:19:44
Hi Christina, Portable Oxygen Concentrators (POCs) are mainly of 2 types:
1. Pulse Flow Only
2. Pulse and Continuous Flow
The Pulse flow POCs are quite reasonable in price and may fulfill your oxygen requirement if you don't use it during sleep or with a PAP device. Some of the popular Pulse flow POCs are: AirSep Freestyle, AirSep Focus, Inogen One G2, Inogen One G3 and Invacare XPO2. Hope this helps.
Posted from United States on: 2015-04-30 at 06:58:29
I have to purchase an oxygen concentrator for my father. He has been prescribed oxygen at 4 LPM continuous for 24x7. Which home or portable oxygen concentrator will suit him the best? Also, what is the annual maintenance for these oxygen concentrators?
Oxygen Times
Replied on: 2015-04-30 at 07:12:52

Hi Jeremy, the flow prescribed to your father can only be delivered through a home oxygen concentrator as there is no portable oxygen concentrator in the market that provides 4 LPM continuous flow.

You require a 5 LPM machine to fulfill his flow requirements. Some of the most common 5 LPM Oxygen Concentrators in market are:

  • AirSep VisionAire 5
  • Invacare Perfect O2 V
  • Philips Respironics Everflo
As far as maintenance is concerned, the external dust filter needs to be washed once a week and internal filter should be replaced as per the instructions by the manufacturer which is usually 6 months or 1500 hours of use. For more details on maintenance, read How to Maintain an Oxygen Concentrator?
Replied from United States on: 2015-04-30 at 07:33:36
Thanks for the reply. The reviews are great!

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