Wiegmann was the installing mechanical contractor and provided design-assist services to M/E1 Engineering, the Engineer of Record, to reduce equipment costs and develop a cost-effective system that provides optimal comfort for residents.

The Union At The Grove consists of six distinct buildings within walking distance of Forest Park, Tower Grove Park, Cortex and the Washington University Medical Campus. Wiegmann installed all of the air handling units, condensing units, exhaust fans and dryer vents to serve each of the individual units along with the ductwork, grills, radiation dampers and refrigeration piping throughout the buildings. A total of 199 split systems were installed.