Greenheck, America's leading manufacturer of ventilation equipment, has come a long way since 1947 when it opened for business as a tiny sheet metal shop in Schofield, Wis. Founders Bernie and Bob Greenheck, though always determined to make their business grow, never imagined how large their enterprise would someday become.

Today, Greenheck designs, manufactures and ships fans and ventilators, centrifugal and vane axial units, make-up air units, energy recovery ventilators, dampers, louvers, kitchen ventilation systems, and laboratory exhaust systems around the world. No other company offers a wider selection of these products. The company has sales in excess of $300 million annually, employs more than 2,000 and has over a million square feet of manufacturing space. No matter how you measure it, Greenheck is number one in air movement and control.

Most manufacturing takes place in Schofield, a small city adjacent to the northern Wisconsin business hub of Wausau. The company also has two other damper/louver manufacturing facilities in Frankfort, KY. and Sacramento, Calif.

Greenheck products are usually hidden behind the walls or on the roofs of office buildings, hotels, shopping malls, restaurants, schools, industrial plants and other commercial buildings. Their function, basically, is to move air in, out and around a building making life inside a lot more pleasant.