Flush sediment out once or twice a year. Turn electricity off at the main fuse box to the water heater when you are going to be gone for three days or more. Use cold water when running the garbage disposal. When you have to use your oven, cook more than one item at a time. Use the self-cleaning feature on your oven only when absolutely needed.
Pressure cookers use much less energy than ordinary pots and pans.
Freezer temperature should be maintained at 10 degrees. Allow hot food to cool for no longer than a half hour before placing in refrigerator.