The portable oxygen concentrators I’ve used do not involve oxygen canisters. My husband’s unit shorted out while we were in Zihuatanejo, and we could not find a repair service. We ended up (with the help of our property manager) finding a computer repair person who worked with an electrician to fix it, but going this route voided the Canadian manufacturer’s warranty. However, it was a potential life or death situation for the flight home so we went ahead with the repair.

Yes, my bad. It's been a few years. No canisters. My mother had both a small one and a large one. The same place I mentioned earlier sold some parts we needed.

Asking for a friend: Potentially will be bringing a POC to Ixtapa/Zihuatenjo for 4 to 6 weeks in early 2022. Just in case, are there any places/companies that can provide service/repair/replacement parts, IF NEEDED? Thanks, in advance.

I believe there is some detailed info about this from a few years ago if you search for it here in the Message Board, but the answer is YES. My mother had one of these and I bought the small oxygen tanks for it near the Clínica Maciel. That was over 5 years ago, so there may be other locations now.