Leaving hot water tank turned on

GaryWT wrote:

pianotuna wrote:
Hi Gary,

No.

2.1 kwh x 12.5 cents = 26.25 X 30 days = $7.87

.7 x 12.25 = 8.76 cents X 30 days = $2.62

Now if you are running a generator to get that energy--the numbers become pretty high. The 2nd way--turning on first thing in the morning I can often use solar power for the energy, so it costs nothing.

If I am traveling I'll use the inverter and alternator to heat the water.

GaryWT wrote:

pianotuna wrote:
Hi,

On the electric setting the water heater will cycle every four hours and run for about 15 minutes. That represents 90 minute of run time and for my RV about 2.1 kwh. If starting from water 'at the ambient' it takes about 30 minutes to bring the water up to a temperature for a good hot shower in the morning. There is generally enough hot water left to get me to bed time. That represents only 0.7 kwh.

I tend to leave it on if someone else is paying, but will manually turn it off if I am paying.

So when you are paying the that is a 20 cents a day savings assuming your calculation of usage is correct.

Hi, sorry, I used 15 cents per kWh you used a lower number and two different ones but you example is only 17.49 cents a day, I estimated an extra 2.51 cents a day, sorry. Either way it is not that much.