Automakers like GM, Ford, AMC, and Chrysler used to make all kinds of home appliances. Here’s why they don’t anymore. An interesting historical article.
https://www.thedrive.com/news/cold-start-the-rise-and-fall-of-car-companies-building-refrigerators
Wonder what type ammonia was used in an Icyball?
While it's a very effective refrigerant the stuff is hateful to deal with. Probably why CFC refrigerants were developed. They might make the naturally occurring ozone hole a bit bigger or smaller (same as nature itself does😛), but they're also generally safe and won't burn, kill or blind you like NH3 will.
Having to handle anhydrous ammonia is the single biggest thing I DON'T miss about my old powerplant career!