Skip to content
Matched Price Guarantee - find lower, we match
Matched Price Guarantee - find lower, we match
Certified Pre-Owned Inogen One® G5® Portable Oxygen Concentrator
Customers rate us 4.8/5 based on 106 reviews.

Certified Pre-Owned Inogen One® G5® Portable Oxygen Concentrator

by Inogen
Save $300.00 Save $300.00
$1,995.00
$1,995.00 - $1,995.00
$1,995.00
$1,695.00
$1,695.00 - $1,695.00
$1,695.00
🚚 Next Day Delivery

Delivered by Tue, Oct 7

📦 Order by 3PM CDT for same-day shipping

In Stock & Ready to Ship

✓ Official Authorized Inogen Dealer
✓ Questions? Call us for expert help & special offers +1 712-435-1306
Talk to an Oxygen Expert

Note: This is a certified pre-owned unit. If you would like a new unit, please reference this page.

The Inogen One G5 isn’t just powerful—it’s remarkably compact. Measuring only 8.15” high, 7.19” wide, and 3.26” deep, it ranks among the smallest and lightest portable oxygen concentrators available today. Whether you’re traveling, taking a walk, or running daily errands, the G5 delivers dependable oxygen support wherever life takes you.

Why Choose Vital Care USA?

Best Price Guarantee

We guarantee the lowest price on all portable oxygen concentrators.

BBB A+ Accredited

We’re A+ rated by the Better Business Bureau and trusted by customers worldwide.

Inogen Authorized Dealer

We’re one of only two Inogen-authorized dealers—buying elsewhere risks inauthentic or used products.

Free Next Day Shipping

All portable oxygen systems include free next-day delivery.

Compact & Portable

Weighs less than a gallon of milk — easy to lift, carry, and take anywhere.

Pulse Dose Delivery

Delivers oxygen the moment you breathe in — automatically adjusts to your needs.”

Oxygen Flow

Strong, steady oxygen delivery for active lifestyles and peace of mind.

Long-Life Battery

Up to 13 hours of power with the extended battery — go all day without worrying about recharging.

Oxygen Therapy Elevated

Oxygen Therapy Elevated

From city streets to mountain trails, the Inogen One G5 keeps you moving with confidence. Weighing just 4.7 pounds and operating quietly at only 38 dBA, it delivers reliable oxygen even at higher elevations.

With six flow settings and up to 9 hours of runtime on a double battery, the G5 is designed for adventure—whether you’re traveling, running errands, or simply enjoying the outdoors. Compact, powerful, and built for mobility, it’s your all-day oxygen companion.

Designed with Patients in Mind

Designed with Patients in Mind

The Inogen One G5 combines powerful oxygen delivery with an intuitive, travel-ready design. Its simple interface and audible alerts make operation effortless and reliable, giving you confidence that your oxygen therapy is always on point. Engineered with Intelligent Delivery Technology®, the G5 automatically detects your breathing patterns and adjusts each pulse for consistent oxygen delivery—whether you’re resting, active, or asleep.

Lighter Than a Gallon of Milk — Built for Everyday Freedom

Lighter Than a Gallon of Milk — Built for Everyday Freedom

At just 4.7 lbs, the Inogen One G5 is among the lightest oxygen concentrators on the market. Its streamlined design makes it effortless to lift, carry, and travel with—giving you true freedom to move confidently throughout your day. Despite its small size, the G5 delivers powerful, reliable oxygen therapy wherever life takes you.

Take Charge of Your Everyday Routine

Take Charge of Your Everyday Routine

Say yes to longer days and spontaneous plans — the Inogen One G5 delivers up to 9 hours of battery life with the double battery at flow setting 1. Designed for comfort and dependability, it keeps your oxygen therapy consistent from morning to night. With flexible charging options and the ability to swap batteries on the go, you stay in control of your oxygen and your schedule — wherever the day takes you.

Getting Started with the Inogen One G5

What's in the Box?

Dimension 8.15 x 3.26 x 7.19 in (Height includes standard battery)
Net Weight 4.7 lbs with standard battery
Oxygen Flow Intelligent Delivery Technology® Six pulse-dose settings from 1-6
Compatibility Inogen® Connect Bluetooth Mobile App
Power Settings AC Power Supply 100-240V, 50-60Hz (auto sensing to allow worldwide use)
DC Power For mobile use in car/airplane
Battery Standard Battery: up to 6.5 hours @ Setting 1 Extended Battery: up to 13 hours @ Setting 1
Noise Level 39 dBA @ setting 2
Concentrator 3 Years or Lifetime
Concentrator Sieve Beds and Accessories: 1 year
Additional Note: When it comes to warranties we’ve put together two customer warranties to best suit your individual needs. Our first option is a standard Three-Year Warranty or our second option is a Lifetime Warranty.

Let customers speak for us

from 106 reviews
Michael Perez
Chariot II Standard Hemi Wheelchair

Its perfect. Thank you

Johnny Gates
Vital Care USA
Works like a charm

We bought the Joerns bed for my mother and it's been amazing. Easy to adjust and very sturdy.

Michelle Stephens
Vital Care USA
Highly recommend

It arrived quickly and the quality is top-notch. Appreciate the care in packaging too.

Jason Cordova
Vital Care USA
No complaints here

It arrived quickly and the quality is top-notch. Appreciate the care in packaging too.

Gloria Martin
Vital Care USA
I'm very satisfied

Easy to assemble and feels very secure. Instructions were clear as well.

Maria Kelley
Vital Care USA
No complaints here

My wife loves it. It's helped tremendously with her recovery.

Nicholas Cruz
Vital Care USA
Great quality and easy to use

We bought the Joerns bed for my mother and it's been amazing. Easy to adjust and very sturdy.

Ashley Harmon
Vital Care USA
Would buy again

We’ve tried others but this one finally met our needs. Happy with the purchase.

Johnathan Cook
Vital Care USA
Very pleased with the product

Sturdy, well-made and fits perfectly in our room. Definitely a smart purchase.

James Rivera
Vital Care USA
No complaints here

Customer service was helpful and the delivery was right on time.

Timothy Wise
Vital Care USA
Would buy again

We bought the Joerns bed for my mother and it's been amazing. Easy to adjust and very sturdy.

Andrew Adams
Vital Care USA
Fantastic product

We bought the Joerns bed for my mother and it's been amazing. Easy to adjust and very sturdy.

Donna Taylor
Vital Care USA
Very pleased with the product

The Hoyer lift has been a game changer for us. Makes transfers much safer and simpler.

Robin Strickland
Vital Care USA
I'm very satisfied

My dad uses the Proactive system daily and it's helped prevent pressure sores.

Robert Brown
Vital Care USA
Great quality and easy to use

This Prius mattress is extremely comfortable and supportive. Great for long-term use.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare