Power outages can happen unexpectedly, especially during severe weather. When the electricity goes out, it is important to know how long food can remain safely refrigerated or frozen and when it is best to throw food away.
Keep the Refrigerator and Freezer Closed
The best thing you can do during an outage is keep refrigerator and freezer doors closed as much as possible. A closed refrigerator will generally keep food cold for about 4 hours, while a full freezer can maintain a safe temperature for approximately 48 hours (or about 24 hours if it is half full).
If you have a food thermometer, check the temperature when the power returns. Perishable foods should be kept at 40°F or below.
When in Doubt, Throw It Out
If refrigerated perishable foods have been above 40°F for 4 hours or more, they should be discarded. This includes meat, poultry, seafood, eggs, dairy products, cooked leftovers, and other foods that require refrigeration.
Never taste food to determine whether it is safe. Food can cause illness even when it looks, smells, or tastes normal.
What About Frozen Food?
Food that still contains ice crystals or is 40°F or below can generally be refrozen or cooked. However, its quality may be affected.
If frozen food has completely thawed and has been above 40°F for more than 2 hours, it should be discarded.
After the Power Comes Back
Once the power is restored, check the temperature of your refrigerator and freezer and inspect your food. When you’re unsure how long a perishable food has been at an unsafe temperature, it is safest to throw it out.
A power outage is frustrating enough without adding a foodborne illness. Planning ahead, keeping appliance doors closed, and knowing when to discard food can help keep your household safe.