The Inogen One G3

The Inogen One G3

Top Selling Portable Oxygen Concentrators

Respironics SimplyGo

  • Lightest Weight Continuous Flow POC
  • CPAP & BiPAP Compatible
  • Pulse Flow Up to 6 LPM

SimplyGo by Respironics is the only POC to offer both continuous flow and pulse-dose delivery in a single device weighing only 10 lbs. The FAA approved SimplyGo delivers up to 2 LPM (liters per minute) of continuous flow, 6 LPM of pulse-dose delivery, and is CPAP and BiPAP compatible.

Inogen One G3

  • Best-Selling Travel POC
  • Battery Life Up to 10 Hrs
  • Pulse Flow Up to 5 LPM

The Inogen One G3 offers a sleek and lightweight design, that is FAA approved so you can go whereever, whenever. No more worrying about running out of oxygen or carrying your oxygen tank since you have a battery that lasts up to 10 hours and you can even charge the G3 in your car if the battery gets low!

Inogen One G4

  • Weighs Only 2.8 Pounds
  • Battery Life Up to 6 Hrs
  • Pulse Flow Up to 3 LPM

The Inogen One G4 is one of the smallest portable oxygen concentrators on the market, only weighing 2.8 pounds. The FAA approved G4 is perfect for getting out of the house for the day, or even going on vacation. The G4 has Intelligent Delivery Technology, so it delivers oxygen within 400 milliseconds of you taking a breath.

Airsep Focus

  • Smallest POC on the Market
  • Weighs Only 1.75 Pounds
  • Pulse Flow at 2 LPM

The AirSep Focus is a super light weight, travel oxygen concentrator offering a pulse dose setting of 2 to cover the most commonly prescribed setting. The Focus is small and light, weighing only 1.75 lbs. making it discrete to carry. This FAA approved portable oxygen concentrator operates with rechargeable batteries with a life up to 3 hours to maximize your time on the go.


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Liberty rents portable oxygen and home oxygen concentrators to make your life easier when traveling. Our POC's are all FAA approved.


Donate: Pulmonary Fibrosis Association

Who is The Pulmonary Fibrosis Association?

The Pulmonary Fibrosis Association, Inc. is a non-profit nationwide charity incorporated in Texas and supported by public donations and fundraising events. Their mission is to raise funds to provide assistance in obtaining necessary supplemental oxygen for pulmonary fibrosis patients with limited resources, educate the public about pulmonary fibrosis, and provide support groups to share information with and encourage patients and their loved ones.

How Can You Help?

If you have a portable oxygen concentrator or home oxygen concentrator that you no longer use, you can donate it to someone who is in need. Liberty Medical accepts donations of portable or home oxygen concentrators on behalf of the Pulmonary Fibrosis Association. We will send a box with packing materials and a prepaid shipping label right to your door and then ship your concentrator to the PFA free of charge, or you can drop it off at one of our two locations! If your concentrator is in need of repair, our certified technicians will repair it and send it to the PFA. The PFA accepts POC batteries, charging cables, and all other oxygen-related accessories.

You can visit the Pulmonary Fibrosis Association directly at

Contact us to donate

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