| Unit Type | Application | ARI/ISO 13256-1 Cooling Efficiency (EER)(water loop) | Refrigerant | Capacity Range
(Tons) | Model |
| Horizontal | Commercial boiler/cooling tower | 12.0 to 13.0 | R-22 | ½ to 5 | 50RHC |
| Commercial boiler/cooling tower & geothermal | 12.3 to 13.2 | R-22 | ½ to 5 | 50RHR | |
| Commercial boiler/cooling tower & geothermal | 12.3 to 13.2 | R-407 | ½ to 5 | 50RHE | |
| Commercial boiler/cooling tower & geothermal | 13.4 to 16.0 | R-22 | 1¼ to 6 | 50RHS | |
| Commercial boiler/cooling tower & geothermal | w/ PSC motor: 14.4 to 16.6
w/ ECM motor: 15.2 to 17.6 | Puron® | ½ to 6 | 50PSH | |
| Commercial boiler/cooling tower & geothermal | Full load: 15.0 to 15.9
Part load: 17.6 to 18.5 | Puron® | 2 to 6 | 50PTH | |
| Commercial boiler/cooling tower & geothermal | 13.0 to 20.5 | Puron® | 1¼ to 5 | 50PCH | |
| Commercial boiler/cooling tower & geothermal | 12.7 to 13.2 | R-22 | 6 to 10 | 50HQL | |
| Vertical | Commercial boiler/cooling tower & geothermal | Up to 21.0 | Puron® | ½ to 1½ | 50VS |
| Commercial boiler/cooling tower | 12.0 to 13.0 | R-22 | ¾ to 5 | 50RVC | |
| Commercial boiler/cooling tower & geothermal | 12.3 to 13.2 | R-22 | ¾ to 5 | 50RVR | |
| Commercial boiler/cooling tower & geothermal | 12.3 to 13.2 | R-407 | ¾ to 5 | 50RVE | |
| Commercial boiler/cooling tower & geothermal | 13.4 to 16.0 | R-22 | 1¼ to 6 | 50RVS | |
| Commercial boiler/cooling tower & geothermal | w/ PSC motor: 14.4 to 16.6
w/ ECM motor: 15.2 to 17.6 | Puron® | ½ to 6 | 50PSV | |
| Commercial boiler/cooling tower & geothermal | 13.0 to 20.5 | Puron® | 1¼ to 5 | 50PCV | |
| Commercial boiler/cooling tower & geothermal | Full load: 15.0 to 15.9
Part load: 17.6 to 18.5 | Puron® | 2 to 6 | 50PTV | |
| Commercial boiler/cooling tower & geothermal | 11.8 to 13.5 | R-22 | 6½ to 25 | 50VQL | |
| Downflow | Commercial boiler/cooling tower & geothermal | 13.4 to 16.0 | R-22 | 1¼ to 6 | 50RDS |
| Commercial boiler/cooling tower & geothermal | w/ PSC motor: 14.4 to 16.6
w/ ECM motor: 15.2 to 17.6 | Puron® | ½ to 6 | 50PSD | |
| Commercial boiler/cooling tower & geothermal | Full load: 15.0 to 15.9
Part load: 17.6 to 18.5 | Puron® | 2 to 6 | 50PTD | |
| Console | Commercial boiler/cooling tower & geothermal | Up to 13.5 with Boiler/Tower Systems and up to 21.3 with Geothermal Applications | Puron® | ¾ to 1½ | 50PEC |
| Commercial boiler/cooling tower & geothermal | 11.6 to 12.1 | R-22 | ½ to 1½ | 50KQL | |
| Commercial boiler/cooling tower & geothermal | 11.6 to 12.1 | R-407 | ½ to 1½ | 50KQE | |
| Rooftop | Commercial boiler/cooling tower & geothermal | 11.6 to 14.3 | R-22 | 3 to 20 | 50RTG |
| Water-to-Water | Commercial boiler/cooling tower & geothermal | 11.6 to 14.3 | R-22 | 3 to 10 | 50RWS |
| Commercial boiler/cooling tower & geothermal | 11.6 to 14.3 | Puron® | 3 to 30 | 50PSW | |
A Member of The United Technologies Corporation Family
