We have electric heat which we keep at 68 or 69 all day and all night. When no one is here during the day, I'd like to turn that down to 63 or so. Then turn it back to 68 when we return. Is there savings which can be had this way, or do you think that any benefits would be eaten up by trying to reheat to 68. We do have a timer on our electric water and that does save money--we;ve seen the difference, so I am inclined to think that the same would be true of our heat.