If you have an older top-loading washing machine, consider converting to a front-loading washer, which uses about 70 percent less water. Washing clothes in cold water is favorable to hot water saving you money. Always try to wash full loads. Washing machines use about the same amount of energy for all load sizes, so fill up the load. Use the high speed spin cycle, which takes more moisture out of your clothes. The drier they are coming out of the washer, the less drying time is needed.