I have a pair of Bradford-White 50-gal water heaters. They are 6-year warranty models and are 6 1/2 years old. One tank just began leaking. My conundrum is: Should I replace both WH's at the same time or just wait for the second one to fail? I'll be doing the labor so I won't save on installation by doing one or both. They're plumbed in series and have a recirculation loop. I'm leaning on replacing both so I can do the entire job once. Comments? Wisdom? Experience? Thanks!!
The dynamics of a series installation, and that is the only way I install them, is that the initial one will usually fail several times before the second one does because the precipitation of minerals, which is a primary cause of failure, will occur in the first one.