Running
your washing machine only when it's fully loaded can reduce the overall number of loads required, thereby
helping you save energy, water, and money on water heating. After toilets,
washing machines are the next biggest household water users, accounting for over one-fifth of home water use. But
you can significantly save water by doing large loads of laundry—over 3,400 gallons annually,
according to the Department of Energy.
If you aren't sure what constitutes a full load, or if you already cram your washing machine full, college-style, determine your washing machine's intended capacity. Peruse the instruction manual or search online for info about your specific model—washing machine capacity can range from 6 to 18 pounds. Step on a scale while holding a typical load of laundry to make sure the size is right. (It's like weighing a kitten!) Now you're ready to call it a wash.