Refurb AirSep FreeStyle 3 Portable Oxygen Concentrator Sale

AirSep is one of the top manufacturers in the industry. They make small, lightweight, and reliable portable oxygen concentrators and the FreeStyle 3 was one of the first portable concentrators under 5 pounds. 

Small, Sleek, and Stylish

Weighing just 4.4 pounds and standing just  8.6” H x 6.1” W x 3.6 L the AirSep FreeStyle 3 is the perfect size for everyday use.  It is light enough to be carried on your walks, to the store, or through the airport and you won’t feel like you’re wasting energy carrying your FreeStyle 3 with you.

The custom carrying case gives you two comfortable and convenient ways to carry your FreeStyle 3; over your shoulder or like a briefcase. Both the shoulder strap and the handle strap are padded for extra comfort. This means you won’t have to deal with the strap digging into your shoulder and you won’t have to constantly adjust your concentrator to be comfortable.

Dual Battery System

The AirSep FreeStyle 3 has a unique dual battery system. It operates using the included internal battery and it has an optional external 8-cell battery that you can use to extend your battery life.

The dual battery system also gets pretty good battery life! If you plan on using an external battery, you can double the expected battery life in the chart below. Here is a chart with the expected battery life for the FreeStyle 3:

Flow Rate Expected Internal Battery Life
1 Up to 3.5 Hours
2 Up to 2.5 Hours
3 Up to 2.0 Hours

The FreeStyle 3 carrying case has a special side pocket designed to carry an extra battery. So if you ever need extra battery life or if you want to play it safe you can keep a fully charge battery with you at all times.

Simple Operation

The AirSep FreeStyle 3 has been one of the most user-friendly portable oxygen concentrators since it was released years ago. 

The FreeStyle 3 control panel is about as simple as they come. It’s equipped with 4 push buttons; one for each flow rate and one to check your remaining battery life.

All you have to do to turn your FreeStyle 3 on is push your desired flow rate and voila, you will begin to receive your oxygen. If you need to change your flow rate, simply push the button with the corresponding flow rate and the FreeStyle will increase or decrease the flow rate.

To check your remaining battery life simply press the battery button. There will be an LED indication system with 4 lights to tell you your remaining battery life.

  • 1 Light = 0-25%
  • 2 Lights = 26-50%
  • 3 Lights = 51-75%
  • 4 Lights = 76-100%

And don’t worry, when your FreeStyle 3 is in the custom carrying case you will be able to access your control panel to change flow rates and check your remaining battery life.

Minimal Maintenance

Keeping your FreeStyle 3 in working order is not a difficult task. You only have two pieces or required maintenance and they will take you 5 minutes a piece… 10 minutes a week is all it will take for you to maintain your FreeStyle 3.

The most important regular maintenance you will need to do is wash and/or replace your filters once every week or two depending on usage. Even if you don’t use it, you will need to wash the filter to keep your FreeStyle 3 in top shape. Here are step-by-step instructions on how to wash your filter:

  • Turn your FreeStyle 3 off
  • Remove the oval filter cover on the front of the concentrator to expose your filter
  • Remove your sponge filter from your concentrator
  • Thoroughly wash filter with warm water and mild soap
  • Let your filter air dry
  • Inspect your filter for any rips or tears (replace your filter if you find any)
  • Put filter back in your FreeStyle 3 and replace the filter cover

The only other maintenance you will be required to do is cleaning your concentrator. Now this isn’t really mandatory, but it will protect you from falling ill, experiencing a COPD exacerbation, and it will keep your machine looking great!

Washing your concentrator is simple, here are step-by-step instructions:

  • Turn your FreeStyle 3 off and remove it from the carrying case
  • Dampen a cloth with warm water and mild soap (emphasis on damp to prevent water damage)
  • Take dampened cloth and wipe down the exterior of your FreeStyle 3
  • Wipe it down with a dry towel after you are done
  • Take a Q-Tip and wipe down the vents on the front of the concentrator

What Comes With Your Refurbished FreeStyle 3?

  • Refurbished AirSep FreeStyle 3 Portable Oxygen Concentrator
  • AC Power Supply
  • DC Power Supply
  • Internal Battery Battery
  • Custom Carrying Case
  • Shoulder and Handle Straps
  • Accessory Bag
  • Tubing
  • Filter
  • Manual
  • 6 Month Warranty

AirSep FreeStyle Accessories:

  • 8-Cell External Battery
  • 2-Bay External Battery Charger
  • 8-Cell Battery Kit (1 Battery with 2-Bay Desktop Charger)
  • Universal Power Supply (AC/DC)
  • Black Carrying Bag
  • Backpack Harness System
  • Accessory Bag
  • Filter

AirSep FreeStyle Specs


6.1"W x 3.6" D x 8.6"H


4.4 Pounds

Flow Rate

Pulse Flow Settings 1-3

Battery Life

Up to 3.5 Hours


100-240 VAC, 50/60Hz; 11-16VDC

FAA Approved



6 Months

Availability: Instock

Call 1-888-416-3855 to Talk to One of Our Respiratory Specialist