First check with the insurance company. My insurance company worked with
Lincare. They have offices all across the country. We called ahead for availability, and exchanged tanks. They also deliver to camp sites. And is the best company I have ever worked with.
If my insurance would of covered it, I would of like to have this
concentrator.
Try to get a portable bottle regulator that has both continuous flow, and oxygen saving. The average use, is 2 liters per minute. Based on that, the really small tanks are good for 1.5 hrs. Next is 3.5 hrs. and the big ones are 6 hrs. On continuous flow.
Canula's come in different sizes also. The oximizer pendent has a large nose piece, but will save oxygen. And is used with a continuous flow regulator. And they have a new one out that has a really tiny nose piece, which is comfortable.
I also recommend a oximeter. Probably not covered my insurance. Runs around $100. It's a finger meter, that measures your oxygen level and heart rate.
My oxygen concentrator was portable. And was on wheels. But very large. And had a humidifier. I stowed it under the dinette table. Just fit. It worked on shore, and generator power.
Hope this helps