As COVID-19 continues to impact our communities, Wiegmann Associates’ goal is to keep our employees, clients and partners safe; ensure business continuity for our customers, and do our part to slow the spread of the virus. At that start of…


As COVID-19 continues to impact our communities, Wiegmann Associates’ goal is to keep our employees, clients and partners safe; ensure business continuity for our customers, and do our part to slow the spread of the virus. At that start of…

With 222 employees nationwide, Wiegmann Associates has been named one of St. Louis’ Largest Mechanical Contractors by the St. Louis Business Journal. Wiegmann is also ranked 56th among the top specialty contractors in the Midwest region by Engineering News Record….

As Wiegmann Associates celebrates it’s 25th anniversary, the firm was featured in this month’s Construction in Focus magazine. VIEW FULL PDF

ST LOUIS, MO – Wiegmann Associates has begun HVAC work as part of a redevelopment of a senior-care facility in Sunset Hills, MO. As the Engineer of Record and mechanical contractor, Wiegmann is designing and installing an energy-efficient heating and…

ST LOUIS, MO – Wiegmann Associates has begun HVAC work as part of an $18 million renovation and expansion project for the Brentwood School District in St. Louis, MO. As the mechanical contractor, Wiegmann is upgrading HVAC systems at the…

ST. LOUIS, MO – Grant Bergman of Wildwood, MO has joined Wiegmann Associates as a project engineer. Bergman has a bachelor’s degree in Mechanical Engineering from the University of Missouri in Columbia. He is working towards his Engineer in Training…

Photo Credit: Opus AE Group, L.L.C. ST LOUIS, MO – Wiegmann Associates has completed HVAC work on the new $48.5 million, 126,200-square-foot Edison District multi-use office building in Downtown Overland Park, KS. Wiegmann Associates was the mechanical contractor for the…

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…

