A fridge can usually keep food safely cold for about 4 hours without power, as long as you keep the door closed and don’t peek.

Quick Scoop

  • Standard guideline :
    • Refrigerator compartment: food is generally safe up to about 4 hours with the door shut and no power.
* Freezer:
  * Full freezer: up to about 48 hours.

  * Half-full freezer: around 24 hours.
  • Golden rule :
    • Keep doors closed as much as possible; every opening dumps a lot of cold air and shortens that safe window.
  • When to start worrying :
    • If the fridge has been off for more than ~4 hours and the inside is above 40°F (about 4°C), perishable foods like meat, dairy, eggs, seafood, and leftovers should be thrown out rather than tasted.
* In the freezer, if items are completely thawed and warmer than 40°F with no ice crystals, they’re no longer considered safe.
  • Factors that change the timing :
    • How full the fridge/freezer is (full = stays cold longer).
* Room temperature around the appliance.

* Door seal quality and fridge model.
  • Simple safety check after an outage :
    1. Check how long the power was out (if it’s clearly >4 hours, be extra strict with fridge items).
2. Use a fridge/freezer thermometer if you have one; 40°F (4°C) is the safety cutoff.

3. Toss anything perishable that sat above 40°F for more than 2 hours, even if it looks or smells fine.

Information gathered from public forums or data available on the internet and portrayed here.