Another bit to save energy:
Get an Intermatic timer, the one rated for 10,000 watts.
I have my water heater (heat pump only mode) run between 11pm and 7am and set to 140f. By the time the timer commands a shutdown, the tank has had a chance to recoup from both morning showers.
Are you saying that the Rheem EcoNet heat pump water heater doesn’t have a timer mode? And that you needed to buy a separate timer for it? I installed a timer on our current water heater but was hoping that Rheem EcoNet would be able to replace that. Disappointing.