The objective of this experiment is to determine the effect of room temperature, thermostat setting position and door opening on the energy consumption of two household refrigerators. The tests were conducted by varying the room temperature, thermostat setting position and door opening independently. While one variable was varied, the other two variables were kept constant. The room temperature was varied from 14°C to 32°C in an environmentally controlled chamber located in our laboratory. The fresh food compartment and freezer compartment thermostat setting positions were set fixed at the medium setting.