Inogen One G4 System

(3 reviews) Write a Review
(You save $478.00 )
Item #
In Stock
Free Shipping
Delivery Estimate:
3 - 4 Weeks*

Product Overview

Product Description

Introducing the next innovation to portable oxygen delivery: the Inogen One G4, capable of full 24/7 oxygen delivery in an unbelievably small package! Offering 1-3 flow settings, the Inogen One G4 is one of the smallest, lightest and quietest units available to the oxygen user today.

With the Inogen One you can jump in the car to run errands, take a weekend trip to see family, or even take it on vacation! The Inogen One G4 is one solution for oxygen at home, away, and for travel, 24/7. It's oxygen therapy on your terms.The Inogen One G4 is proudly Made in America.

System Includes

  • Single Battery
  • Concentrator
  • AC/DC power supplies
  • Carry Strap
  • Carry Bag
  • 3 Year Warranty
  • Intelligent Delivery Technology


  • FAA Approved
  • USB Port for Data Download
  • LCD Display
  • Air Intake through Gross Particle Filter
  • Dual Intake Filter Avoids Blockage
  • Smallest Lightest Model to date!
  • Conserver - Night Enabled
  • Duration Times

    4 Cell Battery:
  • 1 lpm= 2 hrs 40 min
  • 2 lpm= 2 hrs 15 min
  • 3 lpm= 1 hrs 20 min
  • 8 Cell Battery:
  • 1 lpm= 5 hrs
  • 2 lpm= 4 hrs 30 min
  • 3 lpm= 2 hrs 30 min
  • Specifications

  • Weight : 2.8 lbs. (includes single battery)
  • Length : 5.91"
  • Width : 2.68"
  • Height : 7.2" (Height includes single battery)
  • Oxygen Flow : Intelligent Delivery Technology: 3 Flow settings 1-3
  • Power Sensing : AC Power Supply 100-240V, 50-60Hz (auto sensing to allow worldwide use)
  • DC Power Cable : for mobile use in car/airplane
  • Recharge for 4 Cell Battery: Approximately 3 hours with AC or DC power
  • Recharge for 8 Cell Battery: Approximately 5 hours with AC or DC power
  • Noise Level : 40 Decibels at setting 2
  • Warranty : 3 year or lifetime limited warranty**
  • Operation : Simple control functions and easy-to-read LCD display
  • Use : Designed for 24/7 use
  • Warranty

  • Inogen One G4 Concentrator warranty: 3 year
  • All accessories, including batteries: 1 year
  • Sieve beds have one year warranty and may be changed easily - no tools required!
  • Accessories

    Please click on the accessories below if you are interested in adding any of the following items to your order. If you click on any of the accessories below a new tab will open with the accessory information. If you have any questions or concerns adding the following accessories to your order you can reach us at 877-480-3028.

  • 4 Cell Battery or 8 Cell Battery for additional usage time or if replacement is needed
  • External Battery Charger with Power Supply
  • Inogen One G4 Carry Bag

  • Part Number(s):
    • IS-400-NA - Inogen One G4 System with 4 Cell Battery
    • IS-400-NA8 - Inogen One G4 System with 8 Cell Battery


    (3 reviews) Write a Review

    3 Reviews Hide Reviews Show Reviews

    • 5
      Haven't received the product yet but I am sure to

      Posted by Randall Beard on Feb 1st 2020

    • 4
      Inogen One G4 system

      Posted by Beverly Allen on Jun 1st 2019

      Inogen oxygen concentrator is a step up from the AirSep Focus I was using. Better user interface, broader capabilities such as sleep functionality, and adjustable oxygen delivery. One the down side, the carrying case and shoulder strap are poorly engineered and flimsy. (I'm using the much sturdier AirSep Focus shoulder strap). Inogen's carry bag doesn't sit upright on your shoulder as the connectors are midway down the back of the case and not at the top as the Focus case is.

    • 5
      Super service

      Posted by Carol on May 28th 2019

      A bit of a snap noise, but doesn't interfere with results I was hoping for. Kurt was especially helpful and extra fast at solving my problem with shipping. Thanks for the great service.

    Get deals in your inbox

    100% Secure Shopping

    mcafee norton bbb-img

    Stay Connected