Today, any one manufacturer is able to offer ice making from the smallest of under-the-counter machines to massive units able to produce thousands of pounds of ice in a day. Freezers and refrigerators are also option-loaded, with door configurations of seemingly every combination imaginable.
The diversity means that most customers can get exactly what they want from a manufacturer whose machines a contractor may be most familiar with. And while the configuration options are ever expanding, the technology has, in recent years, not been undergoing major changes or shifting back and forth in engineering philosophies.