The FDA requires a prescription for the sale of oxygen concentrators. ... Since it is technically illegal to sell oxygen machines over auction sites (without a prescription), a consumer's remedy should something go wrong is minimal.Mar 3, 2018
How long do oxygen concentrator filters last?
6 to 12 months
How many hours do oxygen concentrators last?
We have seen that older and heavier machines tend to last longer, typically around 15,000 to 20,000 hours of use before the machine would need to be rebuilt again. Newer, lighter machines, while still reliable, last around about 8,000 to 10,000 hours.