1. Be sure that you don’t keep your refrigerator next to your stove or dishwasher; the radiant heat will make it work harder to stay cool.
2. Check the temperature at which it’s set. Use a thermometer to measure and keep the temperature in your fridge at 40°. Any higher, and your energy saving will be undercut by food that spoils more quickly.
3. Make sure your seal is, well, sealed. Close a dollar bill in the door. If you can pull it out easily, then your seal may be weak.
4. Keep the coils well ventilated and clean so that heat doesn’t build up.