| CSI Code | Short Description | Extended Description |
| 15600 | Refrigeration Equipment |
| 15610 | Refrigeration Compressor | Centrifugal Refrigerant Compressors Reciprocating Refrigerant Compressors Rotary - Screw Refrigerant Compressors |
| 15620 | Packaged Water Chiller | Absorption Water Chillers Centrifugal Water Chillers Reciprocating Water Chillers Rotary - Screw Water Chillers |
| 15630 | Refrigerant Monitoring System |
| 15640 | Packaged Cooling Tower | Mechanical - Draft Cooling Towers Natural - Draft Cooling Towers |
| 15650 | Field-Erected Cooling Tower |
| 15660 | Liquid Coolers and Evaporative Condenser |
| 15670 | Refrigerant Condensing Unit | Packaged Refrigerant Condensing Coils and Fan Units Refrigerant Condensing Coils |