b.In the kitchen
Washing the dishes : if you wait until it is full , the machine can use 30 % less water than washing dishes by hand. Avoid cycles of high temperatures and prewash .
Heating food : prefer a microwave or toaster for small meals or heating, because these appliances use much less energy than a regular oven or stove . And do not open the oven door to check on the food , if you can avoid it . Rely on timer or use the oven light and window.
Cooking : For larger meals , reconciles the burner size to the size of the pot to prevent waste . Keep your oven clean gas and maintenance up to date to prevent leakage of deadly carbon monoxide ( CO ) . For some recipes , preheating is not necessary , and use more electricity or gas.
Freezer and Refrigerator: The average temperature of a refrigerator is between 2 and 3 degrees Celsius ( 36 and 38 degrees Fahrenheit ) , and a freezer , which is between -18 and -21 degrees Celsius ( 0 degrees Fahrenheit and 5 ) . Another way to improve efficiency is to stock food containers or fill with water and freeze them . Water containers may seem useless , but fill the freezer, and if you have a power failure , they will help keep your frozen foods .
Maintenance : Never overload the door and discourage the choice of food with the door open . Do not let the ice reach over half a centimeter thick . Easy rolling wheels allow access for cleaning , and allow the best location to ensure good air circulation on all sides .