Quick answer
Keep doors closed. Per USDA guidance, a refrigerator keeps food safe for about 4 hours without power if unopened; a full freezer holds about 48 hours (24 hours if half full). Discard perishable refrigerated food that has been above 40°F for more than 2 hours. Frozen food that still has ice crystals or is at 40°F or below can be refrozen.
Immediate Steps
- Keep doors closed.
- Check the breaker and GFCI.
- Put an appliance thermometer in each compartment.
- Move high-value items to coolers with ice if the failure will last.
- Call for service.
Key Thresholds (USDA)
- Refrigerator: 40°F or below is safe
- Perishable food above 40°F for over 2 hours: discard
- Freezer food with ice crystals or at 40°F or below: can be refrozen
When in doubt, throw it out. Consult USDA food safety resources for specific items.
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