Question:
I have a 40-gallon gas-powered hot water heater. I plan
>on getting a two-person whirlpool tub for a bathroom remodel that holds 70
>gallons minimum and up to 120. At what point will I run out of hot water?
Answer:
At exactly what point you run out of heated water depends on the temp you
select to fill the tub, how full, if the unit was already trying to recover,
ect... but by past experience on these things, you will run out. Talk with your
plumber about options