Photo Credit: ARCTURIS

ST LOUIS, MO – Wiegmann Associates has completed HVAC work on the new two-story, 53,000-square-foot Harris House Intensive Inpatient Treatment Center in St. Charles, MO, which was built with future expansion in mind. Wiegmann served as Engineer of Record (EOR) and design/build mechanical contractor of the new alcohol and drug addiction treatment center. Kadean Construction was the general contractor and Arcturis was the architect.

Wiegmann’s HVAC solution for the 53,000-square-foot facility features an energy-efficient and cost-effective Rooftop Variable Air Volume (VAV) system with rooftop units, energy recovery units, VAV boxes and Fan Terminal Units (FTU). The HVAC system meets the owner’s goal of operating efficiently 24 hours per day, seven days per week with the capability to serve only portions of the building at times. Wiegmann also installed a Delta Controls Building Automation System (BAS) with 79 zones for optimal comfort and efficiency. The system’s enteliWEB graphical interface centralizes the building management operation for the client.

This new Harris House campus was built because their South Broadway campus in St. Louis was operating near maximum capacity. The new St. Charles campus will allow Harris House to treat more patients and for the South Broadway campus to grow into a unique sober living residential area.


Wiegmann Associates is a St. Louis-based mechanical contractor and a national leader in design/build HVAC projects. Since 1995, Wiegmann Associates has engineered and installed innovative, energy-saving and cost-efficient HVAC solutions, refrigeration systems and automation controls for clients in a wide range of industries, including senior living, food and beverage distribution, warehouse, healthcare, commercial and industrial. Wiegmann also provides 24-hour preventative maintenance programs and service in the St. Louis region. Wiegmann is ranked among the top 50 specialty contractors in the Midwest by Engineering News Record and the top 10 largest mechanical contractors by the St. Louis Business Journal. For more information, visit or call (636) 940-1056.

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