Last November I had Double Pneumonia for 4 days and didn't know I had it. I was out of breath and could hardly move, this brought on a heart attack, and so I spent 8 days in the hospital. The Pneumonia damaged the lungs to extent that I'm now on oxygen 24/7. I have a Millennium M10 oxygen concentrator that I got through my insurance that I use in my house. I also bought an Inogen One G5 that I use when I leave my house. I'm thinking of going on a vacation in a few months (Lord Willing) and I will need to buy an oxygen concentrator to use in a motel/hotel room. Has anyone done this and if so, do you have any recommendations?