How much power is wasted when fridge door left open?

When a fridge door is left open, it can waste significant amounts of energy, with estimates suggesting that it could consume an additional 20 to 50 percent more power than normal operation. This is because the refrigerator's compressor works harder to maintain the internal temperature as warm air enters. The exact amount of energy wasted depends on factors such as the fridge's efficiency, ambient temperature, and how long the door remains open. In general, it's best to minimize the time the fridge door is open to save energy.