Guarantee Electrical Co. named Doug Mertzlufft its president.
He assumes oversight responsibilities for the company’s operations at its offices in St. Louis; Granite City; Aurora, Colo.; and Benicia, Calif.
Mertzlufft retains his current title as Guarantee’s chief financial officer.
Mertzlufft joined Guarantee in 1993 as controller. He was promoted to CFO in 1994 and named executive vice president in 2001.