I priced a tankless hot water heater when my ancient heater bit the dust a few months ago, but the price of installation stopped me dead in my tracks, primarily because I needed to bring in extra wiring both to the heater location and to the box. I ended up with a traditional tank style electric heater and while it is adequate I am not happy with the preset water temperature. I am, however, too cheap to turn it up because in this small household the water is seldom used and most of the energy use...