Does anybody know if there is a filter or something that increases oxygen concentration in the air? Maybe something that pumps air from the outside and only lets oxygen in?
You can get air exchangers with filters. They use the hot/cold air from inside to heat/cool the air from outside as they filter it. It reduces co2 by venting it outside.
I’ve seen ads for medical “oxygen concentrators” which involves a face mask. No idea how they work, or what they do.
I’ve seen ads for medical “oxygen concentrators” which involves a face mask. No idea how they work, or what they do.