Malco Products, Inc.

Malco got its start in 1950 when a young steel supply salesman, Mark W.Keymer, decided to manufacture and market a pipe crimper he had invented for use in installing the “new” sheet metal ductwork used with forced air heating systems. More tools soon followed. Today Malco Products, Inc. is the nation’s leading manufacturer of “tools of the trade” for HVAC (Heating, Ventilating and Air Conditioning) professionals. Corporate headquarters and manufacturing facilities are located in Annandale, Minnesota, just outside the Minneapolis / St. Paul metroplex.