wrote in message
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stuff snipped

if a tankless has a power vent, that requires power line voltage to
operate.

no power no hot watewr at all.

One winter, when power was off for three days, we heated the bedroom with
water bottles filled from the gas tank water heater w/pilot light. A little
wasteful of water, but more than offset in hotel costs we didn't have to
pay. Sometimes newer isn't really better and in some ways, even a little
bit worse.

--
Bobby G.