Oxygen Concentrators

Inogen One G4 next to a coffee cup

Inogen provides oxygen concentrator solutions for both portable and stationary use.

Our Inogen One portable oxygen concentrators were developed to be small, light, quiet, energy-efficient and for use at home or while traveling. This innovative product family has been thoughtfully designed for patients who prefer to move about more freely. With two models available - the lower flow setting G4 and higher flow setting G5 - we've got a portable oxygen concentrator to fit your needs.

For stationary oxygen therapy, the Inogen At Home provides a 5 liter per minute continuous flow home oxygen concentrator in a small, compact and light design. Learn more about the Inogen At Home below.

Inogen One G4 System
Inogen One

G4 System

  • Smallest Inogen One system
  • 3 flow settings
  • 3.3 pounds
  • Battery life up to 5 hours on flow setting 1
  • Meets FAA requirements

The Inogen One G4 is our lightest and smallest portable oxygen concentrator. The Inogen One G4 is a 3-setting-device designed for patients who are on a lower oxygen prescription. With its reliable, pulse-dose based Intelligent Delivery Technology, the G4 is powered to provide medical grade oxygen delivery all day, every day.

Inogen One G4 Systems   
Inogen One G5 oxygen concentrator for sale
Inogen One

G5 System

  • 6 flow settings
  • 5.7 pounds
  • Battery life up to 13 hours on flow setting 1
  • Meets FAA requirements
Inogen One G5 Systems   
Inogen One G5 Accessories  

Home Oxygen Concentrator

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Inogen At Home oxygen concentrator for sale
Inogen At Home Logo

Inogen at Home System

  • 5 liters per minute, continuous flow
  • 18 pounds
  • Quiet
  • Energy-efficient
  • 100W on Flow Setting 2
Inogen At Home System   
Inogen At Home Accessories  


There are a variety of options available to meet your supplemental oxygen needs, so why choose an Inogen Oxygen Concentrator rather than a competitor's product? At Inogen, we are passionate about improving the lives of those on oxygen therapy. Inspired by a beloved grandmother named Mae, Inogen was founded to create portable oxygen solution for long term oxygen therapy users. Mae was convinced that there had to be a better option for oxygen therapy when she was diagnosed with COPD in the summer of 2000. After Inogen developed the very first Inogen One, Mae told us that it was better than anything she could have ever hoped for. We have continued to strive for that level of success year after year with innovative solutions for oxygen users.

In one qualitative study, patients expressed that they valued that portable oxygen allowed them to leave home experiencing less breathlessness. It also gave them peace of mind to leave home or move about their house.^ Our mission in developing the Inogen One was to provide portable oxygen solutions that empower you to participate in your daily activities and do things you love.

^Mayoralas Alises S, Caneiras C, Diaz-Lobato SA telephone-based survey of current trends, habits and beliefs in patients receiving portable oxygen therapy in Madrid, Spain, ERJ Open Res 2019; 5: 00059-2018 (https://doi.org/10.1183/23120541.00059-2018).

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