90 percent of the cost of washing clothes is for heating water. Use cold or warm water for most loads, and always use a cold water rinse, since the temperature of the rinse water doesn't affect the cleanliness of the clothes. Match water level to load size, and wash full loads when possible. Use high-speed spin whenever possible to remove excess moisture and shorten drying time. Regularly check hoses and faucets for leaks.
Dryers Vent the clothes dryer outside in the summer.
Try to dry full loads, but don't overload. Dry loads consecutively when possible. An already-warm dryer shortens drying time and saves money. Never add wet items to a partially dry load. Clean the lint trap after each load to maximize drying efficiency.