ESCO Commercial Refrigeration Practice Test

Low temperature refrigeration applications, other than ice makers, normally provide box temperatures of which range?

5°F to 15°F 0°F to 32°F -20°F to -10°F 40°F to 60°F

Correct Answer:

0°F to 32°F

Explanation:

Low-temperature refrigeration is the range used for keeping goods cold enough to slow spoilage but not necessarily frozen solid. In this context, the normal box temperature for LT applications (excluding ice makers) is around 0 to 32 °F. This band covers typical refrigerated storage needs—cold enough to extend shelf life and maintain quality for many perishable products, while staying above deeper freezing that would require a dedicated freezer setup. The other ranges either represent temperatures that are too warm to be considered refrigeration (40–60 °F), or are colder than typical LT storage (such as -20 to -10 °F, which is more like freezer/ultra-low storage), or are narrower and not the standard LT specification (5–15 °F).

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