Some homes just leave their devices running even at night when they are not in use. There were several cases of fire started by the water dispenser which overheated over the night (these are the type with the cooler and heater). So why not turn it off before you sleep? That would make your home safer and you save on electricity as well. Another device to look at is the digibox of the cable tv. Even when not in use, if the pilot light is on then that means it is consuming some electricity. And how about your wifi router? When you sleep, let the router sleep too so you give it rest and save on electricity. What are the other appliances that you leave running when not in use?