Hi,

Have a gas fired vertical tank hot water heater for the house. Relatively
new unit.

Question: if wife takes one of her infinitely long showers, are these units
(typically) supposed to have the heating ability to keep the flowing water
at the set point temperature as the hot water flows out, and the new cold
water flows in ?

Or, must one typically just stop using water to give the tank a chance "to
catch up" ?

Thanks,
Bob