When did automatic refrigerators become popular?

Automatic refrigerators, which are thermostatically controlled and powered by either electricity or gas, became popular in the 1930s.1

The widespread adoption of these appliances marked a significant shift in domestic life, as it eliminated the need for households to rely on manually recharged ice boxes and the daily arrival of an iceman. This transition was further supported by the development of synthetic refrigerants in the 1920s, such as Freon, which provided a safer and more effective alternative to earlier, toxic cooling agents like ammonia.12