AirSep Freestyle 3 Portable Oxygen Concentrator

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FreeStyle 3 unit

Internal battery

Universal power supply

AC power supply,

DC power cable

Shoulder strap

User Manual

Original AirSep 3 was discontinued and replaced by the new AirSep 3 oxygen concentrator .

Lightweight Small Stature Big Performance Portable Oxygen Concentrator

With a weight less than five pounds, the AirSep Freestyle 3 is a light weight portable oxygen concentrator that allows for you to get out and explore during oxygen therapy without having to lug around similar bulky and heavier machines. The AirSep Freestyle 3 can be powered by a rechargeable battery, a power supply for in home use, and through a cars DC power adapter making it an excellent machine for on the go oxygen users. An air belt can be purchased as an additional power source to help lengthen the life of the Freestyle oxygen concentrator for longer day trips.

Multiple power options

The rechargeable battery will last upwards of three and a half hours on the first level setting, allowing for you to adventure for hours at a time during oxygen use. The AirSep oxygen concentrator can also run off of a cars DC power adapter for longer road trips. During at home use, the Freestyle has a power supply that will run consistently. An optional air belt can be purchased which will extend the battery life and allow you to go on all day trips with consistent oxygen. On setting one you can expect three and a half hours of battery power with an additional six and a half hours from the air belt allowing for ten hours of consistent oxygen during use. Higher settings will result in a shorter battery life, with a combined six hours on setting two and five hours on setting three if you have both the battery and air belt.

FAA Approved

The AirSep Freestyle 3 Portable Oxygen Concentrator has been approved for air travel by the FAA and can be used during the flight with the battery. The altitude may affect the oxygen delivered so you should consult with your healthcare provider before traveling to see if a setting change is needed during a flight.


Weighing at just under four and a half pounds, this AirSep oxygen concentrator is the ultimate portable oxygen concentrator on the market. While other machines in its class are bulky and tend to be on the heavier side, the Freestyle will not weight you down. The AirSep Freestyle 3 comes with a carrying bag but can also be worn around any belt during use.

Carrying bag

The AirSep Freestyle 3 comes with a travel bag that can be carried over your shoulder or as a backpack, allowing you to carry your portable oxygen concentrator around easily during use. The harness that allows you to turn the carrying case into a backpack is available separately and not included in the purchase.

Key Features

  • Long lasting single battery charge - Up to three and a half hours of use per charge for on the go oxygen
  • FAA approved - Allows for on board use while in flight
  • Light weight - Four and a half pounds making it light weight and easy to carry

Reviewers Tip:

Consult with your doctor before you decide to change the pressure settings. The Freestyle 3 Portable Oxygen Concentrator has three different settings, and your physician will recommend the appropriate one for you. If you feel like the therapy is ineffective you should work with your doctor to make the correct decision for you to receive the optimal amount of pressure for your oxygen therapy.

Battery Life with and without Optional Air Belt

Battery Duration

  1. Setting 1 - Up to three and a half hours of use
  2. Setting 2 - Up to two and a half hours of use
  3. Setting 3 - Up to two hours of use

Air Belt Duration

  1. Setting 1 - Up to six and a half hours of use
  2. Setting 2 - Up to three and a half hours of use
  3. Setting 3 - Up to three hours of use

Total Combined Duration

  1. Setting 1 - Up to a total of ten hours of use
  2. Setting 2 - Up to a total of six hours of use
  3. Setting 3 - Up to a total of five hours of use


Do I need to tell my airline that I will be bringing an oxygen concentrator on board?

We recommend that you always let your airline know ahead of time that you will carrying and using your Freestyle 3 Portable Oxygen Concentrator during flight. You should also let Amtrak or any other travel companies know if you are using alternative methods to travel than flying.

Does the air belt come with my purchase?

No, the air belt is purchased separately. If you are planning to take longer trips during the day without having access to a power source, you should look into purchasing the air belt so you can extend the usage time.


Available Accessories

Also see these items:

HCPCS CodeE1392
Basic Features
WarrantyThree-year Warranty on the unit and One-year Warranty on battery and accessories

Questions? Ask here. We typically respond within 12-24 hours, often sooner. You'll receive email notifications once answered.

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1–2 of 2 Reviews
5 of 5 Stars!
Ariel P
it is very small and lightweight portable oxygen concentrator, while plug in the battery charge and the charge are good enough for me to do shopping and grocery, battery last up to 3 hours on 1.5 pulse setting, so quite and i can tell durable, 2 years warranty so i don't need to worry, and even not worry now because i do have this machine.
10 years ago
4 of 5 Stars!
Raila B
Good equipment.
Unit supplies oxygen on demand.
One has to remember to breath through the nose. If a sleep and one suddenly starts breathing through the mouth the alarm will go off (No demand for some time). This will wake you up and your partner if in the room. Switching the alarm off one has to open the plastic protection lid and press the numbered button twice to reset. Not easy and quick when very sleepy.

Noise level is acceptable.

Power transformer is somewhat under rated, when the power gets warm/hot it does not function fully and the unit switches to battery mode, i.e. one starts draining the battery while still on power supply. (Room for improvement)

Unit works well in airplane (I had power supply) but as mentioned with the alarm, other passengers and service staff can get nervous.
7 years ago
Showing 1 to 2 (of 2 reviews)