"Dirty" pure oxygen!

Well, the guy came out from Apria Healthcare to exchange my oxygen concentrator. He discovered two problems...I had it in an outlet with a extension to share that outlet, so it was not getting enough electricity. This one was my fault.

But the other problem is Apria's fault. When they delivered the oxygen concentrator in December, they didn't tell me about its filters! They are supposed to be washed every other day. Mine were caked with dust and such since they hadn't been washed since Christmas!!! He says I have been breathing in all that dust and dirt through the oxygen concentrator... so my "pure oxygen" is dirty!!!! Live and learn,
Laurie