How Long Does Food Last in the Fridge Without Power? A closed refrigerator keeps food safe for about 4 hours without power, and a full freezer for about 48 hours. Use this keep-or-toss guide to decide what to save after an outage and learn how outage alerts help you estimate when the clock started. Read more Posted on October 16, 2026October 16, 2026 by Rona Sabatin — Leave a comment