Exactly why I asked about liters needed. My wife needs at least a setting of six liters for daytime use at ~5000 feet, so we got her the InogenOne G2, which maxes at a setting of 6. Nice, small, battery powered, etc. Of course, the G2 is also heavier at 7 pounds. Other models provide for less oxygen and are, of course, not as heavy.
Inogen machines are great, but they're not that cheap. We paid around $3.5K for the unit with all bells and whistles; it had to come out of our pockets as the insurance wouldn't pay for it. It was still well worth the investment!
:)
Lynn
Fish 'n ' Grits wrote:
Check out the Inogen One.It's a small battery-operated concentrator. I've been using mine over two years with no problems at all. I don't leave pilot lights on anyway (too many years on boats), so I never give the propane a thought. I have Medicare and a supplement, so there was no cost to me. Get the double batteries, it comes with 12Vdc and 115vac chargers. I think you'll be pleased. Except as a satisfied user, I have no connection with this company. BTW, the flame for your frig is outside.