Refurbished Oxygen Concentrators for Sale - Used Inogen

Refurbished oxygen concentrators for sale here are used portable units from Inogen, Philips Respironics, OxyGo and Rhythm that have been inspected, cleaned and tested. Each one carries a 1-year warranty, and you need a prescription to buy a concentrator.

Buying a refurbished oxygen concentrator

Refurbished Inogen One G5 portable oxygen concentrator

A refurbished portable oxygen concentrator does the same job as a new one for less money. The price depends on the model and on the battery size you choose.

Used oxygen concentrator prices

Model	Oxygen delivery	Price
Philips Respironics SimplyGo Mini	Pulse dose	$788
Inogen One G3	Pulse dose	from $995
OxyGo Next	Pulse dose	from $995
Inogen One G5	Pulse dose	from $1,099
Inogen One G4	Pulse dose	from $1,275
Philips Respironics SimplyGo	Pulse dose and continuous flow	$1,399
Rhythm P2	Pulse dose	$1,999

Prices checked October 2026. The listings above show the current price and stock.

What refurbished means here

Each unit is inspected, cleaned and function-tested, and worn parts are replaced before it goes on sale. It then carries a 1-year warranty.

Pulse dose or continuous flow

Pulse dose units release oxygen when you inhale. Continuous flow units deliver a steady stream. Most concentrators on this page are pulse dose only; the SimplyGo offers both. Your prescription says which one you need, so check it before you choose.

More oxygen equipment

What you get with Order Your Supplies

Free shipping on US orders over $99.
Refurbished concentrators are inspected, cleaned and tested, and carry a 1-year warranty.
30-day returns on unused products in sealed original packaging.
Questions before you order? Call 307-423-0000.

Ordering with a prescription

Oxygen concentrators are sold by prescription. Place your order, then email a copy of your prescription to info@orderyoursupplies.com.

Questions & answers

How much does a used oxygen concentrator cost?

Refurbished portable concentrators here start at $788 for the Philips Respironics SimplyGo Mini. The Inogen One G3 and OxyGo Next start at $995, the Inogen One G5 at $1,099, and the Rhythm P2 is $1,999. The listing shows the price for each battery option.

What does refurbished mean for an oxygen concentrator?

It is a used unit that has been inspected, cleaned and function-tested, with worn parts replaced. Every refurbished concentrator we sell carries a 1-year warranty.

Do I need a prescription to buy a refurbished oxygen concentrator?

Yes. Oxygen concentrators are sold by prescription, new or refurbished. Place your order, then email a copy of your prescription to info@orderyoursupplies.com and include your order number.

What is the difference between pulse dose and continuous flow?

A pulse dose concentrator releases a measured amount of oxygen each time you breathe in. A continuous flow concentrator delivers oxygen at a steady rate. Your prescription specifies the type and the setting, so match the unit to it.

Can I return a refurbished oxygen concentrator?

Yes, within 30 days of delivery if it is unused and in its sealed original packaging. Approved returns are refunded minus a 20% restocking fee, or you can take store credit. Email returns@orderyoursupplies.com to start a return.

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