Malco Instruments, a developer and producer of instruments for the HVACR and constructing building trades, celebrated its 75th anniversary on Might 17, 2025, with a ribbon-cutting ceremony and open home at its newly transformed constructing in Annandale, Minn.
The celebration was attended by Malco workers, Annandale neighborhood members, and native dignitaries and representatives from the U.S. Senate, Wright County, and the Metropolis of Annandale, which formally proclaimed the date “Malco Instruments Day.”
Malco Instruments was based in 1950 by Mark W. Keymer, a younger metal provide salesman who invented a pipe crimper for putting in sheet steel ductwork utilized in pressured air heating techniques. The corporate began in a small storage in Minneapolis earlier than shifting to its present headquarters in Annandale, the place it now employs greater than 170 associates. Keymer was later inducted into the Minnesota Inventors’ Corridor of Fame in 2007.
After lately finishing a considerable constructing transform, Malco welcomed the neighborhood to expertise the up to date workspaces and see how the corporate manufactures and ships its merchandise from central Minnesota.
“Malco’s 75th anniversary serves as a tribute to 75 years of arduous work and progress–a real celebration of American manufacturing, rooted in Minnesota and powered by our individuals,” says Wealthy Benninghoff, Malco Group CEO. “This milestone additionally serves as a celebratory turning level as we look forward to the long run. We’re all energized by what’s forward for The Malco Group.”
Malco turned an worker inventory possession plan (ESOP) in 2015 after the Keymer household bought their closing shares again to the corporate. The corporate remained employee-owned till late 2024, when Malco Instruments was acquired by Aspen Pumps Group.
The corporate was named as a High Office by The Minnesota Star Tribune in 2024 and was additionally certainly one of simply 1,500 corporations nationwide to obtain a High Office recognition from USA At this time in 2025.
