The Rheem electric water heater manual says the following:
"The anode rod should be removed from the
water heater’s tank annually for inspection
and replaced when more than 6″ of core
wire is exposed at either end of the rod."
If you can do this yourself, it is probably a good idea. If you need to hire someone every year to do it, it is probably not cost effective. What are others doing? I think that most people don't have a clue as to what an anode rod is and they do nothing. I have never done any maintenance of any type on a water heater. I just replace the water heater when it fails. Well water is much more prone to causing your water heater to rust out than the typical treated water we have in The Villages. If you do no maintenance, your water heater will probably last about 15 years, and maybe longer.
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