Which of the following components is considered a Type II appliance?

A Type II appliance is defined as a system that uses refrigerants with high-pressure characteristics, typically related to commercial equipment. Among the options provided, ice machines are a clear representation of Type II appliances because they often utilize refrigerants such as R-404A or R-507A, which are included in the classification of high-pressure refrigerants used in commercial applications.

Residential comfort cooling systems generally fall under Type I appliances, which involve small appliances that contain refrigerants in small amounts. Commercial dehumidifiers may vary but typically do not qualify as Type II unless they specifically use high-pressure refrigerants. Therefore, ice machines fit the criteria of Type II due to their use of high-pressure refrigerants in a commercial setting, making this answer accurate based on the definitions outlined in the EPA 608 regulations.