| RM | Remote Medium Temperature Semi-Hermetic |
| PN | Pre-assembled Remote Medium Temperature Semi-Hermetic |
| RL | Remote Low Temperature Semi-Hermetic |
| PL | Pre-assembled Remote Low Temperature Semi-Hermetic |
| EPN | Pre-assembled Remote Medium Temperature Hermetic |
| EPL | Pre-assembled Remote Low Temperature Hermetic |
| BSC | Self-Contained Medium Temperature System Semi-Hermetic |
| AZ | Self-Contained Low Temperature System Semi-Hermetic |
| RP | Remote Medium & Low Temperature Semi-Hermetic |
| RPH | Remote Medium & Low Temperature Hermetic |
| OHCU | Remote Outdoor Medium & Low Temperature Hermetic |
| W | Water Cooled Semi-Hermetic |