November 2026 · resilience · free local tool
Prepare for a Freezer Outage Without Treating Hours as a Guarantee
The number of hours on a freezer estimate is not a measurement of the food inside.
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Data as of 2026-11-01; review due 2027-01-30.
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Show the working
The same three evidence rules power the example, your result, and the self-test.
Engine self-test
Checking five golden cases…
Limits and safe use
Ice cream and other exceptions show why a single refreeze rule cannot cover every food.
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Source notes and currentness
FoodSafety.gov gives approximate holding times of 48 hours for a full closed freezer and 24 hours for a half-full one.
- FoodSafety.gov — Food Safety During Power Outage
Keep appliance doors closed. A refrigerator holds food safely for up to four hours without power; a closed full freezer holds temperature about 48 hours, or 24 hours half full. Evaluate individual foods with the official chart and never taste-test for safety.
Publication/effective date: Reviewed 2024-08-08. Checked 2026-11-01.