The recommended temperature for a freezer is -18°C (0°F) or below. This temperature effectively stops bacterial growth and preserves food for extended periods, ensuring food safety and quality.
Why -18°C?
- At -18°C, harmful bacteria cannot grow, keeping food safe to eat.
- It preserves the taste, texture, and nutritional value of frozen foods.
- It helps improve energy efficiency and appliance longevity.
Temperature Range
- While -18°C is optimal, freezers can function well between approximately -16°C to -22°C.
- Temperatures above -15°C may cause food to begin thawing, encouraging bacterial growth.
- Temperatures significantly below -20°C increase energy consumption and may cause frost buildup.
How to Check Freezer Temperature
- Use a freezer thermometer placed in the center of the freezer.
- Check built-in digital displays if available, but verify accuracy occasionally.
- Observe the condition of foods, such as soft ice cream or melting ice cubes, which indicate the freezer is too warm.
Thus, setting and maintaining the freezer temperature at -18°C (0°F) is the best practice for food safety and quality preservation.
