When sourcing a chain hoist, you must first define the Rated Lifting Capacity (WLL), ensuring it exceeds your heaviest load requirement. Pay close attention to the Lift Height and the Headroom (the distance between the upper and lower hooks when the hoist is fully raised), as low-headroom models are essential for confined spaces. For electric models, verify the Duty Cycle (ED rating) to ensure the motor can handle your frequency of use without overheating, and confirm the Voltage/Phase compatibility (e.g., 220V/380V/440V) with your local power grid.