the most common size of a refrigerator in American homes is around 18 to 21 cubic feet (cu. ft.). These sizes typically refer to the total capacity of the refrigerator, including both fresh food and freezer compartments.
Smaller apartments or condos might have refrigerators in the range of 14 to 18 cu. ft., while larger homes or families may have refrigerators with capacities ranging from 22 to 30 cu. ft. or even larger.
It's important to note that appliance trends and consumer preferences can change over time, so there may be some variation in the most common refrigerator sizes based on more recent data. Additionally, with the rise of energy-efficient and compact living solutions, smaller-sized refrigerators have been gaining popularity in recent years, particularly among single individuals or smaller households.