Don’t leave the door of the refrigerator open.
Leaving the door of your refrigerator open for a long period of time can cost you lot of money, due to using up lots of energy.
This is because whenever you open your refrigerator, it could lose a certain amount of its cool temperature, and will have to try to attain it again.
Tell all the members of your family about this, so that you carn minimize your energy consumption.