Clearfield Consumer wrote:
Thanks for the replies.

While I do have "Time Of Day" service, someone in another group
mentioned that the water heaters Smart control unit "learns" to adapt
to useage and the timer may be interfering with it's ability to do that

The "smart" control algorithm is on the webpage you linked:

"Every time the lower element is energized the controls lower the water
temperature by three-tenths of one degree, but never lower than 115°F.
Every time the upper element is energized the controls raise the water
temperature by three degrees, but never above the temperature set by the
user."

Basically it keeps the water temp between 115 and whatever temperature
is set by the user, at a temperature that is as low as possible while
still supplying enough hot water.

I'd guess you'd be better off keeping the heater off during the
expensive part of the day.

Of course, there's nothing stopping you from trying it for a few months,
then switching it back the other way and comparing your power usage.

Chris