Sell Oxygen Concentrator Machines. We buy used Inogen One machines.

by Fran Fox

We buy Inogen One Oxygen Machines!

5-20-2021 –  Not only are we paying the “Top Dollar” for used Inogen machines.  For a limited time, we will also pay the FedEx Shipping.  FedEx will come to you with a prepaid label, stick it on and ship it to us.  Immediately upon receipt, we mail your check!  No Hassle Cash!

Want to know where to sell your portable oxygen concentrator for the best price or what to expect when you sell your portable oxygen machine? Learn the basics below.

Determining how much your portable oxygen concentrator is worth.

Three variables affect the amount a seller might receive.

• The brand, type, model and weight.
• The hours of use.
• The number of batteries, power supplies and additional accessories.

Quick Form – Quote To Sell Used Oxygen Machine

Complete form below and we will email you a price to buy.

Brand Name & Model of Machine (required)

Hours on machine (required)
Click Here - How to get hours.

Serial Number, on the back or bottom of the machine. Starts with SN (required)

If you accept a quote what name should the check be made out to? (required)

If you accept a quote what address should the check be mailed to? (required)

How many batteries? (required)

Original Purchase Date?

What company sold this machine when new?

Your phone number: (required)

Email address to send quote to: (required)

Any additional information you would like to mention?:

Caution! Make sure you sell your oxygen machine legally.

 A sale of a portable oxygen machine in the USA requires a valid physician’s prescription. Portable oxygen concentrators are controlled by the US Federal Drug Association (FDA).  Selling portable oxygen concentrators on Ebay and Craigslist is a violation of their terms of agreements.


“prescription drugs, medical devices; controlled substances and related items”


The list of prohibited and restricted items below covers items you can list under certain conditions, and items that we don’t allow at all. In our medical drugs and devices policy, for example, while we don’t allow many items (such as contact lenses), we do allow other items under certain conditions (including certain types of medical instruments).

When We Buy Your Used Portable Concentrator:

  • We pay the shipping cost.

  • We will pay you by company check.

All machines purchased by Main Clinic Supply must be in good working order, unless agreed to differently as part of the purchase. 

In all cases it is absolutely essential that the machine comes from a smoke-free environment.  Any indication or smell of tobacco smoke on these machines will be returned.