Hot water is something you don’t often think about until it runs out. Then, there’s an immediate problem that inconveniences everyone. Take the daily morning routine in our house, involving two teenagers and two adults, all having to get ready for work and school. We need to get four people cleaned up and out the door, and there is nothing worse than stepping into a shower, getting soaped up, and having the hot water run out. It’s even worse in the winter, when the water rapidly goes from toasty to frigid in the blink of an eye. You can only imagine the arguments that have gone on, the timers set to encourage shorter showers, the debates over who gets to shower first, and the rest- all over managing our hot water.