With the cost of a new HOG regulator set at $170, why even bother servicing a reg? Buying a new HOG every two years costs about the same as two annual services.
Well, I use a MK5 that I paid about $30 for and a pair of MK10s that I paid about $40 each for, plus 2nd stages that I paid about $25 for, all of these regs are very high quality and will last me the rest of my life. I service them myself for about $5 in parts every few years. I did spend about $150 on tools. So for me owning regulators is very inexpensive, I own several, and they are very high performance regulators. But it's also a hobby, it's enjoyable for me to work on these things and to think about them from a performance and design perspective.
The hardest part is remembering when the last time I serviced a particular reg was. Since I keep a close watch on their performance, I can usually anticipate a slight reduction in performance that tells me it's time to rebuild. I also always travel with a spare, because any regulator, cheap, expensive, old, new, whatever, is simply a mechanical device and can fail unexpectedly.
---------- Post added June 7th, 2014 at 08:12 AM ----------
A regulator is indeed a very simple device... however, it has been uber-engineered to do what it does. How many of you would not give a second thought about using a regulator that your buddy, with no training whatsoever, serviced for you?
I don't know about the 'uber-engineered' part, but yes they are simple devices. As far as diving with a regulator serviced by a buddy, in my case I have done this several times, but I guess the answer is 'depends on the buddy'. At least with a buddy you know the person involved; at a dive shop you frequently don't even know who does the work.
The other thing is that any diver who puts his life in his regulator's hands (so to speak) is taking a big risk. This is why ALL dive training has redundancy, usually in the form of a buddy, as a primary requirement for safe diving. Regulator failure is never life threatening unless you are diving un-safely.