Answer:
Refrigerator,oven
Explanation:
Off-cycle defrost is typically used in refrigeration units, such as household refrigerators and freezers, as well as in commercial refrigeration systems like walk-in coolers and freezers. These units use off-cycle defrost to periodically melt any frost buildup on the evaporator coils without interrupting the cooling process. This method helps maintain the efficiency of the refrigeration system by preventing excessive ice buildup, which can decrease airflow and reduce cooling efficiency.
