I had an appointment at the VAMC sleep clinic yesterday. I obtained my machine from a local hospital's medical supply vendor. They had asked me to bring in my entire machine, hoses, mask, everything. I also brought in my sleep study records, as the VA was not involved in my study. They read the chip from the machine to get a log of activity. They tested my machine. They said my mask, hose, filters, and velcro harness were all shot, so they issued me new ones.
The nurse who I worked with was actually very positive, friendly, and encouraging. I was actually pleased with the experience and wanted to give her credit for her competence and kindness, so I filled out a comment card. I only wish everyone at the VA was like that.