I just got my electric bill a couple of days ago and it was about 6% less than the month before. I couldn't figure out why, because it seemed like we used the a/c a lot more this month than the month before. I went down into the garage this morning and there was the answer. About a month ago, I had put a big thick blanket on the water heater and also put a timer on it that cuts off at 10:00pm and back on at 5:00am. I had bought the timer years ago and it had never been used and the blanket cost about $16 at Lowes. It looks like it was money well spent.