As the USDA notes in Keeping Food Safe During an Emergency, your refrigerator will keep food safe for up to 4 hours during a power outage. Keep the door closed as much as possible. Discard refrigerated perishable food such as meat, poultry, fish, eggs, and leftovers after 4 hours without power.Click to see full answer. Hereof, how long does it take for food to spoil when power goes out?According to the USDA, in a power outage, a refrigerator will stay cold for up to four hours, and a freezer will keep its temperature for 24 hours if it is half-full and 48 hours if it is full.Subsequently, question is, do eggs go bad if you lose power? During a power outage, follow these guidelines to keep eggs safe. Make sure to have an appliance thermometer in your refrigerator or freezer. The refrigerator will maintain its temperature for about four hours after the power goes out. A full freezer will keep food frozen for approximately 48 hours. Additionally, how can I keep my fridge cold without power? Keep large containers of ice in your freezer to keep the temperature down. The more full your freezer is, the longer the food inside will stay frozen. Also, a block of ice could be put into the refrigerator to keep the temperature down. A block of ice will help to keep food cold for about 24 hours.How long can you leave food in the fridge without power UK?Food should keep for between 4-6 hours in the fridge and 15-24 hours in the freezer if you can avoid opening it. During a power cut keep the door closed and if possible put a blanket over the fridge or freezer which will help to insulate it.