Household appliances across the board have become more energy-efficient over the years—and that extends to water usage too. Dishwashers, for one, are more water-efficient than they’ve ever been. But ...

Dishwasher stacking tends to draw surprisingly strong opinions. One of my relatives lives by the mantra: "There's no such thing as a full dishwasher" and, astonishingly, can fit a large dinner party's ...