I am not sure why you are using the portable concentrator at home, I would recommend using a regular concentrator at home. You can get tubing that reaches all around your home. I use a concentrator at home. I use to use a portable when out but it couldn't keep up with me, so I went to tanks. I have a home refill station so I don't have to worry about running out of tanks. The portable kept malfunctioning because it couldn't keep up with my breathing. If you don't have a regular concentrator I would discuss it with your doctor so that he could prescribe one for you.

Linda those portable oxygen concentrators have parts that need to be replaced google it and see what you need

I use my large concentrator at home they are better then the portable they have continuous air while a portable is pulse only makes a big difference I don’t like the portable if I’m going out shopping I take the small tanks I have the other day my portable over heated and shut down that was very scary glad I was just pulling into my driveway

While I have not had any issues since moving to the country, I have aways made sure it is turned up to my pressure which is 2.5. Maybe you could have it raised some for you? I will take my inogen for a real romp in June-July-Aug when we hit the vacation routine. That will be a big work out for both my machine and I so I will be getting back to everyone on that score once I make it home. Nothing quite like a cross country jaunt to check how frail you are, or have become in the past 6 months! But even back north I did not go far, nor fast with my machine. I may not be the best person to be asking. But certainly turn it up or have it set higher, and be sure you change out the tubing too. If it even is the tiniest bit dirty, it makes a difference!

Why r u not using the large concentrator I use mine exclusively at home only use small one when out. Prayers