Greenheck, the worldwide leader in manufacturing and distributing air movement, control and conditioning equipment, is headquartered in Schofield, Wisconsin, U.S.A. Greenheck’s broad line of ventilation equipment includes fans and ventilators, centrifugal and vane axial units, makeup air units, energy recovery ventilators, kitchen ventilation systems, packaged ventilation systems, indoor air handlers, dampers, louvers, and laboratory exhaust systems.