In 1947, Amana manufactured the first upright freezer for the home, and in 1949 it added a side-by-side refrigerator/freezer. In 1950 the company was sold to a group of investors, including its founder, and became Amana Refrigeration, Inc.
In 1954 it began making air conditioners. Amana was acquired in 1965 by Raytheon, which had invented the microwave oven in 1947, and introduced the commercial Radarange Model 1611 in 1954. In 1967 Amana introduced a consumer model of the Radarange, the first popular microwave designed for home use.
Amana has since expanded into manufacturing a variety of other appliances, including furnaces, ovens, countertop ranges, dishwashers, and clothes washers and dryers.