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ResMed AirSense 11 AutoSet CPAP with HumidAir
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Key Features

  • Refurbished Inogen One G3 portable oxygen concentrator with pulse‑dose settings 1–5 for flexible portable therapy.
  • Weighs about 4.8 lb with single battery, designed for everyday carry and travel.
  • Published runtime when new: up to 4.7 hours (single) and up to 10 hours (double) on setting 1; actual runtime on used units varies with battery condition.
  • Quiet operation around 39 dBA at setting 2, helping it blend into home and social environments.
  • FAA‑accepted portable oxygen concentrator, commonly used for flights and long trips when airlines’ battery and documentation rules are followed.
Description

Enjoy proven portable oxygen at a lower cost with this refurbished Inogen One G3 portable oxygen concentrator. Weighing about 4.8 lb with a single battery, the G3 is built for everyday mobility at home, during errands, and for travel.

The Inogen One G3 is a pulse-dose concentrator with five settings (1–5), delivering oxygen only when it detects your inhalation. It is designed for people whose prescriptions allow pulse-dose therapy rather than continuous flow, so your clinician should confirm that a portable pulse-dose device fits your needs before you choose this model.

This unit is pre-owned and professionally reconditioned. It has been tested, inspected, cleaned, and sanitized for safe use; as a refurbished device, it may show normal cosmetic wear, but the focus is reliable performance and battery function.

Actual runtime on this refurbished G3 will depend on setting, breathing rate, and especially battery age and condition. Many users add a spare or newer battery, or a DC power option for the car, if they want more predictable runtime for busy days.

The Inogen One G3 meets FAA acceptance criteria for portable oxygen concentrators, and is commonly used for air travel. Airline rules vary, so always confirm your carrier’s requirements and bring enough charged batteries to cover your entire travel day.

Specifications
Manufacturer Inogen
Model BA-300, BA-316
Warranty 1-Year Warranty
HCPCS Codes E1392
Tube Connection Cannula
Operating Modes Pulse dose delivery
Altitude Adjustment Up to 10,000 ft
Sound Level ~39 dBA at flow setting 2
Carrying Case Yes
Included items
  • Oxygen Concentrator G3 refurbished
  • Battery (Single or Double)
  • AC and DC power supplies
  • DC power cable
  • Carry bag
  • Nasal cannula
Customer reviews (17)

Product questions & answers

Is this Inogen One G3 new, open box, or used?
This listing is for a used, pre‑owned Inogen One G3 portable oxygen concentrator, not a new or unused open‑box unit. Each device is tested, inspected, cleaned, and sanitized for safe operation, but normal cosmetic wear from prior use should be expected.

What kind of oxygen delivery does the G3 provide? Is it continuous flow?
The Inogen One G3 is a pulse‑dose portable oxygen concentrator, with settings 1–5 that deliver oxygen in pulses when inhalation is detected. It does not provide continuous flow. If your prescription requires continuous‑flow oxygen, you should use a device designed for continuous flow instead.

How long will the battery last on this used G3?
When new, a G3 with a single battery can provide up to about 4.7 hours on setting 1, and a double battery can provide up to about 10 hours on setting 1. On a used unit, actual runtime will depend on battery age, flow setting, breathing rate, and environmental conditions. Many users keep a spare or newer battery available if they need more predictable runtime for long outings.

Can I use the Inogen One G3 for air travel?
Yes. The Inogen One G3 meets FAA acceptance criteria for portable oxygen concentrators and appears on FAA and DOT lists of approved models. Airlines may require advance notice, a physician’s statement, and enough charged batteries for at least 150% of the flight duration, so always check your airline’s policy before traveling.

Who is this used Inogen One G3 best for?
A used G3 is a strong option for value‑focused buyers who want an Inogen POC with settings 1–5 and solid portability, including many seniors, caregivers, and COPD/respiratory patients whose prescriptions fit pulse‑dose therapy and who want a lighter alternative to tanks. It can work as a primary POC or as a backup to a home concentrator.

How do I choose between the G3, G4, and G5?
Choose G3 if you want a budget‑friendly Inogen with settings 1–5 and a good balance of weight and runtime.

Choose G4 if your top priority is minimum weight and your prescription fits settings 1–3.

Choose G5 if you want the widest range (1–6) and longest listed battery options.

If you tell us your prescribed setting and when you plan to use your concentrator (home, walking, travel), we can help you select the best fit.
Is this product covered by Medicare or my insurance?
Most of our products are sold as cash‑pay purchases. However, you can request an insurance‑ready receipt from us after your purchase. This detailed receipt includes the information many insurers ask for (such as item description, cost, and HCPCS code), so you can submit a claim yourself and ask your plan about partial or full reimbursement if out‑of‑network or self‑purchase benefits are available.

Need help with a different question? Contact our team or call 307-423-0000.

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