UPS never did come yesterday to pick up my portable oxygen concentrator for repair. Last evening, I used their tracking -- It turns out the lady I spoke with on the phone at UPS failed to change my address. At around six, the UPS tracking site was requesting an address correction. I had to open...
Bought oxygen concentrator five years ago. Barely used. It appeared to be malfunctioning. Now I'm not sure because today it ran well. However, the sieve beds need to be changed because they wear out even if you don't use the machine. Got this concentrator with a lifetime guarantee except for...
