Inogen is great especially for travelers Customer Service/Sales was great to work with. I began using my Inogen in the USA and my night O2 levels improved. I was pleased with the machine's portability on my trip to Australia and my ability to use it while in a foreign country.

My disappointment with Inogen… My disappointment with Inogen continues. I can add another unit failure to my experience. I been thru a half dozen G5's that have failed and had to be replaced. The authorized seller I've bought from has been great and understanding. Every failure has been after less than 100 hours of use. I even had a brand new unit fail after only 4 hours of use. I don't trust these POC's. If you are considering purchasing an Imogen product I would recommend adding the cost of a lifetime warranty (about $500) to the cost of ownership. The one thing I can count on is the unit failing. Soon I will be past warranty and stuck with a $3000 paper weight and needing a POC. I would not recommend Inogen concentrators but if you do buy, get from a authorized dealer and not direct from Inogen. ------- I see I received the standard canned response from Inogen. Unless you would consider supplying a unit that will not fail or give me a free lifetime warranty, I see no reason to talk. Every time I return a unit, it costs me $89 to have a replacement shipped.

Easy Usage I enjoy my G4 and the freedom it gives me. I’m 93 years old and find it easy to operate. The questions I have asked of customer support have all been always been answered and the representatives have been courteous. Thank You.

I don't have to be weighted down with… I don't have to be weighted down with heavy tanks anymore and the battery operated package is great. I am concerned about getting in touch with someone in an emergency or need to know situation. It takes 25 minutes or more to reach someone. I am so far, a very satisfied customer.

This was the best company I have ever… This was the best company I have ever dealt with! My previous oxygen provider ignored three prescriptions for a portable oxygen concentrator from two pulmonologists. The Inogen team handled all of the insurance requirements. They are now my provider for all oxygen needs. The portable unit is simple and functions perfectly for my needs. Thank you to everyone at Inogen for the great experience.