Three employees of Fond du Lac, Wis.-based mechanical contractor J.F. Ahern Co. received LEED accreditation from the U.S. Green Building Council - Phil Corbin, HVAC engineering and business development manager; Dave Reinelt, project manager; and Tom Wickersham, design engineer. The certification ensures their understanding of green building principles, and familiarity with LEED requirements, resources and processes.

The company is currently seeking LEED certification on its 58,000-square-foot corporate building expansion, which is expected to be completed this spring.