I have a vacation home in PA which I visit about 1-2 times a month. I have always turned off the hot water heater when I leave and was recently told that I should leave it on which I have been doing since being told this. I leave the heat on in the house (also electric) with the thermostat set to 55. Is there any reason to leave that hot water heater going when no one is there? I would hate to pay the extra electric if its not necessary. Thanks for any info on this subject.