Did you ever consider a tankless water heater? They are not alot ($ up
front) more than a good tank style heater but alot less maintenance as
well as a heck of alot cheeper to run. No tank draining, No TPR valve,
No tank to rot out, No anode to change. All around a better deal. In
europe Tank style heaters are considered antque. almost all houses
there are built new with tankless heaters. Just something to think
about.