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How cold should a deep freezer be?

Any freezer, especially a deep freezer, should never be above -15 degrees C. With a temperature greater than -15 degrees C, ice cream will begin to soften and food will not keep as long.

Upper limit

Any freezer, especially a deep freezer, should never be above -15 degrees C (5 F). With a temperature greater than -15 degrees C (5 F), ice cream will begin to soften and food will not keep as long.

Ideal

Although -15 degrees C (5 F) is the maximum temperature you want for a home freezer, the preferred temperature for a deep freezer is subzero. At -15.0 or -23.3 degrees C (5 F or -10 F), food can actually be stored longer and the quality of frozen products like ice cream will be improved. Having a freezer thermometer will assure that your freezer is always set at the ideal.

Conclusion

Home freezers should be kept at -15 degrees C (5 F), but keep your deep freeze at -23 to -17.7 degrees C (-10 to 0 F) for optimum performance.

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About the Author

Jake Damon has his Ph.D. in English from Texas Tech University. Damon has been a writer and editor since 1998. He edits two professional journals, has published books including "Catullan Consciousness" and "Re-Reading Thomas Traherne," and written articles for various academic and trade presses, including Oxford University Press, Associated University Presses and the Center for Medieval and Renaissance Studies at Arizona State University.