Airsep Freestyle 5 - POC Review

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:

  • FAA approved – Can be used in airplane
  • User friendly power panel
  • Massive battery backup - upto 7 hours along with the optional airbelt (battery belt)
  • Backpack harness
  • 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
  • Alarm type is difficult to recognize


10.7” H x 6.6” W x 4.4” D

Much smaller than the POCs which have continuous flow option available but quite similar in size to other Pulse Flow only Portable Oxygen Concentrators (POCs).

Oxygen Concentrator Flow-meter

AirSep Freestyle 5’ size relative to iPhone 5s.


Unit: 2.8 kg.

Optional AirBelt: 800 grams.

The POC is wearable and can be carried like a sling bag – some heavier concentrators are comparatively easy to carry because of the cart they come with.

Oxygen Concentrator types

Oxygen Purity

Company claims: 90% (-3% / +5.5%) in operating range.

Power Panel

Freestyle 5 has a very user friendly power panel especially for not-so tech savvy old patients.

The POC starts just by pressing the desired flow button and turns off by pressing the same button again.

Oxygen Concentrator types


2 options:

  • Internal Battery
  • AirBelt (Optional Battery Belt)
Airsep Freestyle 5 Battery Duration Chart
Pulse Setting Internal Battery Battery Belt (Optional) Total Duration
1 Pulse Setting 3 hours 4 hours 7 hours
2 Pulse Setting 2.5 hours 2 hours 4.5 hours
3 Pulse Setting 2 hours 1.5 hours 3.5 hours
4 Pulse Setting 1.75 hours 1.25 hours 3 hours
5 Pulse Setting 1 hour 1 hour 2 hours

Internal Battery

AirSep Freestyle 5 has a non-removable internal battery. The battery duration varies from 1 hour to 3 hours depending on the pulse setting chosen.

The POC has a built in charge indicator which shows the battery status, the 4 LEDs flash to display the status of battery in 25% increments.

The battery keeps on charging simultaneously while the unit is running on AC/DC power.

Internal Battery’s duration: upto 3 hours

AirBelt (Optional Battery belt)

Provides additional 4 hours of battery which makes it total duration of upto 7 hours (4 hours of belt + 3 hours of internal battery). The airbelt has a battery status indicator which displays battery power in 25% increments like the machine.

AirSep Freestyle 5 Airbelt

Recharge time from fully depleted state

  • Internal Battery: 3 hours
  • Optional Airbelt: 3.5 hours
Freestyle 5 charger connector pin

Power Sources

The machine works on 4 sources:

  • AC Mains
  • DC Source (like car charger)
  • Rechargeable Internal Battery
  • AirBelt (Additional Battery belt)


Provides pulse flow upto 5 setting (equivalent of 5 LPM continuous flow) with increments of 1. The machine is a powerhouse for the people who require pulse flow.

The POC doesn’t have continuous flow, therefore, not suitable for use with PAP devices.

Trigger Sensitivity

AirSep Freestyle 5 has the most sensitive pulse delivery system than any of the Portable Oxygen Concentrators in market with trigger sensitivity of -0.054 cm H2O. The only close competition to Freestyle in terms of sensitivity is Focus by AirSep itself followed by sister company’s SeQual Eclipse.

Ultra Sense technology makes Freestyle 5 so sensitive that you would rarely find this machine missing a breath. The machine works very well with nasal cannula upto 25ft.

Related: AirSep - About the Company


Wide range of safety alarms, but not very easy to identify the type.

Alarms in Airsep Freestyle 5
Alarm Type Visual Audible
Start Up Green Light 1 beep
Pulse Flow Intermittent Green Light on every pulse None
Low Battery 25% Battery indicator illuminates intermittently in yellow color Intermittent Beep
Breath Rate Exceeded Yellow light illuminates intermittently ½ second intermittent beep every 5 seconds
General malfunction Red light illuminates continuously Two ½ second intermittent beeps every 5 seconds
Service Required Yellow Light - continuous None
Cannula Disconnect Yellow Light – continuous Continuous beep

A non-labelled yellow LED on top-left of the panel illuminates after 5,000 hours of use to indicate thorough service requirement.

Warm Up Time

2 minutes


Low maintenance - Requires weekly cleaning of air intake filter and a thorough servicing after 5,000 hours of use.

Carrying Case

AirSep Freestyle 5 with carrying case


The machine has an optional backpack harness which makes it very easy to carry. A major advantage than many other competitors.

Freestyle 5 backpack harness

Outstation Carrying Bag

The POC comes packed in this carrying bag which contains all the required accessories that come with the machine.

Freestyle 5 carrying bag


12000 ft (3,657 m) – Highest in the league

International Approvals

US Food & Drug Administration (FDA); CE 0459; ISO 9001:2008; ISO 13485:2003; Federal Aviation Administration (FAA)

Top 5 Wearable POCs in Freestyle 5' competition

  1. Invacare XPO2
  2. Inogen One G2
  3. Inogen One G3
  4. AirSep Focus
  5. AirSep Freestyle 3

Top 3 comparison with AirSep Freestyle 5

  1. AirSep Freestyle 5 v/s Invacare XPO2
  2. AirSep Freestyle 5 v/s Inogen One G2 v/s Inogen One G3
  3. AirSep Freestyle 3 v/s AirSep Focus v/s AirSep Freestyle 5

Country of Manufacture

United States of America (USA)

Following the success of Freestyle 3, this 5 setting variant of Freestyle is expected to be a big hit worldwide.

Freestyle 5 has AirSep’s brilliantly designed Ultra-sense Technology which makes it the most sensitive pulse flow Oxygen Concentrator in market.

The POC is a highly recommended if you just need pulse flow of Oxygen less than 5 Pulse setting.

AirSep Freestyle 5 in bag

Want to Buy or Rent an Oxygen Concentrator?


Dhiru Khoosal
Posted from South Africa on: 2021-01-31 at 17:30:21
I need a agent for Airsep Feestyle PW012 for 3 settings. The red light comes on and it starts to beep continually i checked the nasal cannula which is fine. And the internal battery & external battery does not charge this machine was given to me by my late cousin looks like Channels Medical Solutions do not have Airsep in their catalogue
Posted from United Dtates on: 2018-02-14 at 06:20:07
How much does it cost? Do you have delivery to New York. Thanks .
Posted from South Africa on: 2017-12-13 at 00:37:02
Whom can I contact to get a battery for an Airsep Freestyle 5 POC in South Africa?
Oxygen Times
Replied on: 2017-12-13 at 01:13:53
Hi Johan, you should contact your equipment provider from whom you have purchased the concentrator. If that is not possible then you should contact Airsep directly.
Arun Somani
Posted from India on: 2017-10-23 at 05:10:57
Pl.send me the price
Oxygen Times
Replied on: 2017-10-23 at 23:07:03
Hi Arun, Oxygen Times is an informational website which provides unbiased reviews, comparisons and contact information of dealers who deal in oxygen concentrator. We don't sell oxygen concentrators.
Sreedhar Vellamena
Posted from India on: 2017-07-31 at 11:50:36
Do you have any distributor in India for portable model 5L, good battery capacity?
Oxygen Times
Replied on: 2017-08-01 at 05:12:50
Hi Sreedhar, Oxygen Times is an informational website which provides unbiased reviews, comparisons and contact information of dealers who deal in oxygen concentrator. We don't sell oxygen concentrators. However, you can use our Dealer Finder Tool to find oxygen concentrator dealers in your city.
Dana Mansuri
Posted from USA on: 2017-05-05 at 22:00:44
I am looking for a freestyle replacement battery MFR# BT015-1 Do you know from where I can order one?
Oxygen Times
Replied on: 2017-05-07 at 23:56:23
Hi Dana, you can contact your equipment provider for the battery or you can contact Caire directly by calling them on 877-704-0878.
Posted from Lithuania/UK on: 2017-02-28 at 20:30:45
Hello could you please tell me price to Lithuania or U.K.?
Oxygen Times
Replied on: 2017-03-17 at 00:11:53
Hi Guoda, we don't sell oxygen concentrators. Oxygen Times is an informative website.
best hospitals in delhi
Posted from India on: 2017-02-16 at 03:00:46
Very nice post. You really give a new thing for us. Thank you so much for sharing with us. We provide best hospitals in delhi for any kind of surgeries.
Devki Nandan Panwar
Posted from India on: 2017-01-28 at 02:57:26
Sir my wife using airsep focus since 1.5years when she walks. At home continues flow 1.5lpm from oxygen cylinder mentain 90 where as focus mentain 84 level. Now I purchased freestyle 5 last week. Its pulse flow level 4-5 lpm mentained 84 level. I want to know that freestyle 5 in why not mentaining oxygen level 90 Highly appreciated ur suggestion.
Oxygen Times
Replied on: 2017-03-17 at 00:15:16
Hi Devki, there could be 2 reasons for this: either your wife's oxygen requirement has increased or there is some problem with the machine. Is the machine giving any alarms?
Shikha Joshi
Posted from India on: 2016-06-04 at 06:17:37
Can i get it on rent for a trial of 1 month in New Delhi?
Oxygen Times
Replied on: 2016-06-15 at 00:00:14
Hi Shikha, there are dealers in New Delhi who provide this machine on rent. That is the only way you can try it.
Ronell Terblanche
Posted from South Africa on: 2016-04-27 at 12:59:28
My husband is having an Airsep freestyle 5. The battery needs to be replaced. Can you direct me to distributors in South Africa.
Oxygen Times
Replied on: 2016-04-29 at 22:09:11
Hi Ronell, we have only one distributor in our database for South Africa. Here are the contact details:
Channels Medical Solutions
Located in: Pretoria, Gauteng
Contact no. 2786 111 4028 / 27129411533
Arshitha Basavaraj
Posted from India on: 2016-02-20 at 05:35:13
Where can I find this in Bangalore and what are it's rates?
Oxygen Times
Replied on: 2016-02-20 at 12:50:55
Hi Arshitha, here is a list of AirSep oxygen concentrator dealers in Bangalore. This machine may cost you around 2.5 lakh in Indian Rupees (INR).
Replied on: 2017-11-22 at 11:02:05
Can you please provide the contact detail of portable Airsep oxygen concentrator
Leona Venter
Posted from South Africa on: 2015-10-28 at 11:25:26
Good day
You please send me all the details of above machine and the price please. Urgently please.
Oxygen Times
Replied on: 2015-10-28 at 14:42:36
Hi Leona, Oxygen Times is a review and comparison website for oxygen concentrators. You can gather all the information by reading our articles. We don't sell.
Ajay Tripathi
Posted from India on: 2015-09-12 at 12:25:47
I would like to know the price in Mumbai, India. Also let me know about continuous flow model as well.
Oxygen Times
Replied on: 2015-09-12 at 12:59:30
Hi Ajay, you can expect price of AirSep Freestyle 5 to be around INR 2.5 lakh in Mumbai. Continuous flow Oxygen Concentrators cost around INR 50,000. You can call Mumbai based AirSep Oxygen Concentrator dealers and ask the prices from them. Read our 8 step Oxygen concentrator buying guide for India to learn more.
Posted from South Africa on: 2015-05-29 at 09:07:08
I would like to know what is the price of the unit and if it's available in South Africa
Oxygen Times
Replied on: 2015-05-30 at 01:20:12
Dear Francois, unfortunately, we don't have the database of POC dealers in South Africa so it would be difficult for us to tell you about the price and availability of the unit.
Posted from London on: 2015-04-21 at 03:10:48
My mother will be flying next month from South Africa to London. We have purchased Freestyle 5 last month and it is working well. Since it is FAA approved, I wanted to ask whether we will be required to carry any certificate or not to show to the airlines. We have not received any certificate with the machine. This is an urgent matter as my mother requires oxygen 24X7.
Oxygen Times
Replied on: 2015-04-21 at 03:37:00
Hello Ayanda, in most cases the crew allows the use of FAA approved POCs but still it is advisable to carry the FAA certificate because you never know in which airport or connecting flight you face restrictions for carrying the machine.
You can ask your equipment provider to provide the certificate to you or you can download it from the FAA website.
Apart from this, you must also carry prescription by a certified physician and give 48 hours prior notice to the airlines that you will be carrying a POC with you.

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