Greenheck has added two models to its line of high-volume low-speed (HVLS) fans. Model DS-3, a three-blade HVLS fan for large commercial and industrial spaces, offers capacities up to 164,900 cfm and is available in 14- to 24-foot sizes. Model DC-5, a five-blade HVLS fan featuring a lightweight design to complement office spaces, restaurants and more, offers capacities up to 54,900 cfm and is available in 8- to 14-foot sizes. Both models can be paired with a keypad control capable of operating up to five HVLS fans at the same speed setting with the same direction of rotation. A more advanced touchscreen control with BACnet capability is also available. The touchscreen control allows users to integrate their HVLS fans with a building management system for full control over the fans and the ability to monitor fan status, including fault histories.