However, they do have their downfalls. The following are some of the most popular styles of refrigerators, along with the pros and cons of each. Here are the major categories you should be aware of: Reciprocating compressors are some of the oldest commercial refrigeration compressor around today. R600a compressor are also popular. As shown here, the type of compressor used depends on the size of product (in tons) and applications. Screw compressor has two screw (screw-shaped) rotors, one male and the other female.