I've got some idiot at work telling me that his hot water heater imploded. I'm telling him that is impossible, but I want to make sure I'm not the idiot. Technically, I guess anything is possible, but being on city water, wouldn't every fire hydrant in the neighborhood have to be running at the same time to cause enough of a vacuum for implosion on a vessel that is supposed to be able to withstand 300PSI of pressure? And that would be only after everything else between the main and the HWH survived the vacuum first.
Anyone ever heard of this happening?
I'm 99% sure that it exploded on him, but he was lucky. From what he told me, his limit switch has failed, and his T&P is 15 years old (installed with the HWH).
Anyway, I haven't had a chance to look at it yet myself, so there is a lot of specualtion here, but I just want to know if anyone ever heard of a HWH imploding.