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Six food-safety steps for a refrigerator and freezer during a power outage

Learn the closed-door time windows and conservative food-discard checks recommended by FoodSafety.gov.

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FoodSafety.gov

Original guidance from FoodSafety.gov

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Four and 48 hours are approximate benchmarks for unopened appliances. Actual temperatures and individual foods govern safety.

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Keep appliance thermometers in both compartments and check for 40°F (4°C) or below in the fridge and 0°F (-18°C) or below in the freezer.
Record when power fails and keep both doors closed as much as possible.
An unopened refrigerator stays cold for roughly four hours. After four hours without power, discard perishable refrigerated meat, fish, eggs, and leftovers.
A closed full freezer may hold its temperature for about 48 hours; a half-full one for about 24 hours.
After power returns, check temperatures. Frozen food with ice crystals or at 40°F (4°C) or lower may be assessed for safe refreezing or cooking, item by item.
Never taste food to test safety, and do not rely only on smell. Discard food with unsafe time-temperature exposure or uncertain safety.