How Long Food Lasts in an Outage (and the Real Cost of a Dead Fridge)
Food safety in power outages: the 4-hour and 48-hour rules, what to save vs toss, insurance claims, and preventing the loss entirely.
A full refrigerator and freezer hold $500 to $1,500 of food, and a deep freezer of meat can double that. The safety rules are strict because foodborne illness is: here's exactly how long things last, what to keep, and the claim-and-prevention playbook.
The clock rules
Refrigerator: 4 hours after power loss with the door closed, then perishables (meat, dairy, eggs, leftovers, cut produce) go. Freezer: 48 hours full / 24 hours half-full, unopened; food that still holds ice crystals can be refrozen. 'When in doubt, throw it out' is the actual rule, taste and smell do not detect the pathogens that matter.
Triage and documentation
Group freezer items together (thermal mass), add ice or dry ice if available (50 lbs of dry ice holds a full freezer ~2 days), and photograph contents before disposal: homeowner's policies commonly cover $250 to $500 of food loss per event, and utilities occasionally reimburse after prolonged outages.
Prevention math
One deep-freezer loss can equal several years of the operating cost of backup power. A battery covers a fridge overnight easily (700W running); a standby generator makes the whole category permanently moot. This is the least dramatic and most universal argument for backup power there is.
Quick Answers
Is food safe if the outage was only two hours?
Refrigerated food: yes, if doors stayed closed. Reset the 4-hour clock from the outage start, not from when you noticed.
Can I refreeze thawed food?
If it still contains ice crystals or has stayed at or below 40°F: yes, quality may dip but it's safe. Fully thawed above 40°F for 2+ hours: discard.
Does insurance cover spoiled food?
Most homeowner policies cover a few hundred dollars per event, sometimes without deductible; photograph and list before disposal and check your policy's food-spoilage rider.