Wiegmann Associates has completed HVAC work for the new $8.3 million retail and office building at the Streets of St. Charles development in St. Charles, Mo.

Wiegmann served as the mechanical contractor and provided value engineering services for the 60,000-square-foot building. The general contractor was Brinkmann Constructors. The architect was Oculus Inc.

Wiegmann’s HVAC design solution features an energy efficient, high-performing Rooftop Variable Air Volume HVAC system to serve the new three-story building. The building features retail spaces on the first floor and offices on the top two floors, which Wiegmann will finish for the new tenant, Elekta.

Wiegmann’s value engineering of the system, including right-sizing equipment and streamlining duct design, saved more than 43 percent on upfront HVAC costs. Wiegmann also designed and installed a custom Delta Controls Direct Digital Control system, which allows the owner to remotely monitor and control the HVAC system. This Building Automation System improves acoustical performance, optimizes energy savings and reduces operating costs by decreasing fan and electric reheat energy.

The Streets of St. Charles is a 27-acre development, home to a variety of retail, dining, entertainment, hospitality, multi-family housing and offices.