Key takeaways
- A closed fridge keeps food safe for about 4 hours; a full freezer about 48 hours.
- Keep the doors closed and use thermometers to know where you stand.
- Unplug the fridge before power returns to avoid surge damage, if you can.
- A dead display or clicking compressor after an outage usually means surge damage.
How Long Food Stays Safe Without Power
According to the USDA, food stays safe for a limited time if you keep the doors closed:
| Where | Safe for about | Key rule |
|---|---|---|
| Refrigerator | 4 hours | Keep the door closed |
| Full freezer | 48 hours | A full freezer holds cold longer |
| Half-full freezer | 24 hours | Group items together |
After 4 hours without power, perishable food in the fridge (meat, dairy, eggs, leftovers) should go into a cooler with ice if you want to keep it.
Before an Outage: Get Ready
In East County, outages can come with summer heat waves and with high-wind events, when utilities may shut off power in fire-risk areas. Some planned shutoffs are announced ahead of time, which gives you a chance to prepare.
- Keep an appliance thermometer in both the fridge and freezer.
- Freeze containers of water. They help keep the freezer cold and give you drinking water later.
- Have a cooler and frozen gel packs ready.
- Group freezer food together so it stays cold longer.
- Know where your breaker panel is.
- Consider an appliance surge protector for your fridge.
During the Outage
- Keep the doors closed. Every opening lets cold air out.
- Move medicine that needs to stay cold into a cooler with ice. Ask your pharmacist how long it can safely be out of the fridge.
- If the outage will last more than 4 hours, move perishables to coolers.
- If you have a generator, plug the fridge in with a heavy-duty cord rated for it, and never run a generator indoors or in a garage.
When the Power Comes Back
The moment power returns can be hard on your fridge. A power surge can damage the control board, the compressor start relay or other electronics.
- If you can, unplug the fridge before power returns, then plug it back in a few minutes after.
- Check that the lights, fans and display come back on.
- Give the fridge a few hours to cool down. A full recovery can take up to 24 hours.
- Check the thermometers. Throw out fridge food that was above 40°F for more than 2 hours.
- Frozen food that still has ice crystals or reads 40°F or below can be refrozen, though quality may drop.
Signs Your Fridge Was Damaged by the Outage
- The fridge has power but will not cool.
- The display is blank, flickering or shows an error code.
- The compressor clicks on and off without running.
- Fans run but the compressor does not, or the other way around.
- You smell burning near the back. Unplug it right away.
Fridge not working after an outage?
We test the control board, relays and compressor to find what the surge damaged, often the same day. Our emergency line is open 24 hours.
Control board repair · Emergency refrigerator repair · Compressor repair
What to Keep and What to Throw Out
| Food | Keep if… | Throw out if… |
|---|---|---|
| Meat, poultry, fish | Stayed at 40°F or below | Above 40°F for over 2 hours |
| Milk, soft cheese, yogurt | Stayed at 40°F or below | Above 40°F for over 2 hours |
| Hard cheese, butter | Usually safe if not moldy | Moldy or very soft |
| Fresh fruit and whole vegetables | Usually safe | Cut, cooked or slimy |
| Frozen food | Has ice crystals or 40°F or below | Fully thawed and warm for over 2 hours |
When in doubt, throw it out. For safe fridge settings after the power returns, see our fridge temperature guide.