| CSI Code | Short Description | Extended Description |
| 15900 | HVAC Instrumentation and Control |
| 15905 | HVAC Instrumentation |
| 15910 | Direct Digital Control |
| 15915 | Electric and Electronic Control | Central Control Equipment Control Panels Terminal Boxes |
| 15920 | Pneumatic Control |
| 15925 | Pneumatic and Electric Control |
| 15930 | Self-Powered Control |
| 15935 | Bulding Systems Control |
| 15940 | Sequence of Operation |