Bit of Hot Water Tank Science
How would you figure out if it is cost effective to turn off your water tank for a certain number of days. eg. We have an 82 gallon electric hot water tank. How many days away from home could justify turning it off, and turning it back on to reheat upon returning to the home; 4, 10, 20 days? How would you determine this?
depends on how long and how old
It really depends on how long you are going to be gone and how old the wate heater is...
All you have to do is shut it down at the breaker
and it only takes 30 minutes to heat back up anyway...
when you arrive home.....
if the heater is old , sometimes just turning it off could
cause the elements or thermostats not to come back on
or burn out when it is switched back on.....
I doubt that the cost of the electricity would be more than one meal out
while you are on vacation