Wash laundry in warm or cold water. Rinse in cold water
80-90% of the energy used in doing the wash is used to heat the water. Studies show that clothes rinsed in cold water come out just as clean as those rinsed in warm, so go cold! You’ll save money on your water-heating bill. And your clothes will come out better rinsed and less wrinkled.
Wash your clothes in cold or warm water and rinse them in cold. Many new energy efficient washing machines only use cold for rinsing.