[semlin]

ok, I will avoid the question of what he is doing in there for 15 minutes. You don't want to know.

It's all about the shower head. We have an old fashioned clawfoot tub with one of those old fashioned 4 inch diameter shower heads that is awesome but a big water user. We used to have a 40 usg tank and now have a 50 us gallon water heater. Even now you can't do 2 long showers back to back. With the old tank you needed to wait 15 minutes for the second shower and it would be curtailed early by cold water. At our old house where we used a water saver shower head we had no problems with 2 showers back to back.