Reviews you can trust.

Refrigerator/Freezer Thermometers

Food quality and safety can be affected if temperatures go outside of the safe zone for too long.

What We Learned

To make sure our refrigerators and freezers consistently operate at the optimal levels for food safety (at or below 40 degrees for refrigerators and zero degrees for freezers), we like to use special thermometers designed to track their temperatures over time. Simple instant-read refrigerator/freezer thermometers only tell you the current temperature of your appliance; they won’t ne...

Try All Three of Our Sites
FREE for 14 Days

Get Instant All Access to 25 Years of America's Test Kitchen

  • All Foolproof Recipes on America's Test Kitchen, Cook's Illustrated, and Cook's Country
  • NEW! Over 1,500 recipes from our award-winning cookbooks
  • Complete TV Show Video Library—watch entire episodes or individual clips
  • Up-to-Date Taste Tests and Equipment Reviews
  • Save Favorites, Print Shopping Lists, Share Comments