<img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=1701643246719572&amp;ev=PageView&amp;noscript=1">


Get Your Freedom Back Today With
the Inogen One G4 Portable Oxygen Concentrator From 1st Class Medical!

Fill Out The Form To Get A Free Demo Video For The Inogen One G4!

The Inogen One G4 is the newest concentrator from Inogen. Weighing just 2.8 pounds and offering up to 4.5 hours of battery life the G4 is ideal for everyday use. Whether you're traveling or spending time with your loved ones, the G4 will never weigh you down!

Fill out the form on the right to receive a FREE demo of the Inogen One G4!

Fill Out The Form To Watch A Free Demo of the Inogen One G4!

Why Buy From 1st Class Medical?
hqaaWe Are The Only HQAA Licensed Online Retailer

We are no fly by night company. When you purchase from us, you can count on us to be there to service all your needs.

Group of Concentrators.jpg
We Offer Used And Refurbished Oxygen Concentrators As Low As $795

Save money today by purchasing a used or factory refurbished oxygen concentrator.


We Offer The EXCLUSIVE 1st Class Medical SwapIT Program

Our exclusive SwapIT program guarantees you peace of mind. If your machine ever needs to be sent in for repair, we will ship you out a replacement to keep at no additional cost to you!

Regain your freedom and guarantee your peace of mind with the EXCLUSIVE 1st Class Medical SwapIT program! 


We strive to provide all of our patients with the best service and care possible. With the addition of our brand new SwapIT program, we wanted to find a way to make the repair process as convenient as possible and to make your life easier. 


Benefits of the 1st Class Medical SwapIT Program:

  • No need to worry about your unit being repaired
  • We cover all of the shipping costs^
  • We schedule UPS to come pick up your unit at your current location^
  • You have no down time waiting for your unit to come back to you
  • The replacement unit is yours to keep
  • The SwapIt program lasts for the entire manufacturer's warranty
  • Simple one call process to swap concentrators


How SwapIT Works:

  1. You buy your portable oxygen concentrator from us
  2. If at any point you have an issue with your unit and it needs to be sent in for repair, we will SwapIT out with another concentrator** for you to keep (we cover the shipping costs^)
  3. Your replacement unit will be shipped out that same day* via UPS Ground (expedited shipping is available for an additional cost)
  4. We include a return shipping label in the box so you can easily return the faulty machine back to us

To take advantage of 1st Class Medical's exclusive SwapIT program, or if you have any questions, call 1-800-520-5726 and speak with a respiratory specialist today! 

You can also e-mail us at info@1stclassmedical.net




^Expedited shipping is not included in the SwapIt program. If you want or need expedited shipping, you are responsible for the shipping fees.
^Free ground shipping is only included for residents in the 48 contiguous states
*Same day shipping is only available if your SwapIt request is processed before 3:00pm MST.
**Replacement concentrator will have comparable hours to that of your current portable oxygen concentrator 
Worlds Largest Distributor Of Home And Portable Oxygen Concentrators

We have been in business for over 35 years! We carry every make and model of oxygen concentrators.



The Inogen One G4 is extremely portable and lightweight coming in at 2.8 pounds.


Oxygen Output:

The Inogen One G4 is a pulse flow oxygen concentrator, offering pulse flow settings 1-3. It is also equipped with sleep mode technology allowing you to use this machine for nighttime oxygen delivery.


Multiple Battery Options:

The Inogen One G4 has two battery options available; the single battery and the double battery. The single battery gets up to 2.25 hours of use on a single charge and the double battery gets up to 4.5 hours of use on a single charge.


3 Year Warranty:

The standard warranty for the Inogen One G4 is 3 years on the concentrator. 

"I purchased my Inogen One G3 and it was a great investment. I use oxygen at night and a few times during the day. As I travel quite a bit for my job, The Inogen One G3 has made flying much more comfortable as I can use the machine on all airlines.”
NANA- Lynn

Unit Specs:
Dimensions:                   7.2” H x 2.68” W x 5.91” L
Weight:                            2.8 Pounds
Pulse or Continous:      Pulse Flow Only
Oxygen Output:            Pulse Settings 1-3
Expected Battery Life:  Up to 4.5 Hours w/ Double Battery
Power:                             100-240 VAC, 50/60Hz; 11-16 VDC
FAA Approved:             Yes
Warranty:                        3 Years on Concentrator

Inogen One G3 Package Includes:
  • Inogen One G4 Concentrator
  • Single Battery
  • AC Power Supply
  • DC Power Supply
  • Custom Carrying Case
  • Shouler Strap
  • Tubing
  • Filter
  • Manual
  • 3 Year Warranty

PRICE: $2,495.00


See how 1st Class Medical truly helps those in need!


Authorized Dealer Of:

Screen_Shot_2014-10-22_at_4.19.10_PM      CAIRE.jpg         AirSep.jpg         DeVilbiss.jpg         Inogen.jpg          InovaLabs.jpg         O2Concepts.jpg         Respironics-1.jpg          SeQual.jpg