@cerich can correct me if I'm wrong but the warranty applies regardless of who services it as long as the issue is a manufacturer problem.
"we don’t void warranty when any trained (by any brand) repair technician services our gear for you"
From here:
Our take on servicing / Deep Thoughts
@stuartv just because a reg tech can rebuild it doesn't mean the shop will allow them to rebuild it for a myriad of reasons.
you say about mfg's that won't sell them to you, yet you dive and recommend Hollis, who's official policy prohibits people from buying kits for their regs.
If a shop is certified to rebuild regulators, they should have parts kits in stock, you should only ever have to wait for weird parts that aren't normally replaced. I.e. if you had to replace an environmental seal or something weird like that. Anything else should be in stock, repair kits, inhale/exhale diaphragms, etc etc
First, I can buy Hollis service kits right here:
Service Parts Kits for Hollis Regulators
And Dive Rite service kits here:
Service Parts Kits for Dive Rite Regulators
I don't care what Hollis' official policy is. I care whether I can actually buy a service kit or not. And anyway, I did not recommend Hollis here.
I agree that my LDS SHOULD have the right parts in stock, but SHOULD and DO are often not on the same page.
Anyway, my perspective on regs has changed a little bit based on my current inability to dive because I don't have any regs. I'm going to get service kits for all my regs, so this doesn't happen again. But, the Deep 6 service policy and inclusion of service kits with their regs seems like it puts them ahead of other brands when it comes to concerns about traveling and having a reg malfunction.
Also, if your concern is that a shop might not allow a reg tech to rebuild a reg, doesn't that equally apply if you have Apeks (or any other brand) and the shop in your tropical destination isn't an official Apeks dealer, and/or doesn't have an Apeks-trained tech? I mean you cannot be guaranteed that wherever you travel will have a local shop that is an official dealer for any particular brand, can you? Surely, Apeks is carried by vastly more shops than Deep 6. But, if you're going to buy based on being ASSURED of finding an official dealer anywhere you travel to, you probably need to buy 2 or 3 reg sets to take, each of a different brand, don't you? You could end up somewhere where no local shop is an Apeks dealer, right? If they won't work on your Deep 6 reg, then they aren't going to work on your Apeks, either, right? If they will work on either, they still might not have parts for either one.
Maybe I'm underestimating Apeks. If they have an official dealer in every single location the OP will ever go, then my questions are moot.