Inc. 1910. H. Van Mollenberg, Pres./CEO; Joe Kilijanski, E.V.P.; Jim Hofner, V.P. Refrigeration. A one source mechanical-refrigeration contractor for the design and installation of refrigeration systems for industrial and commercial cold storage warehouses and facilities. Installation of refrigeration systems for food processing. Installation of process piping systems for the food, dairy, and chemical industry. Installation of HVAC systems. Shop fabrication facility for package and piping assemblies. Parts department and service organization.