Wiegmann Associates has been named one of the largest mechanical engineering firms in the U.S. by Engineering News Record (ENR). ENR’s 2017 Top 600 Specialty Contractor list ranks contractors in fields such as mechanical, masonry, painting, demolition, steel erection, fire protection, concrete, utility, and more. ENR, is the leading international magazine for the construction industry.



Wiegmann Associates is a St. Louis-based mechanical contractor serving the commercial, industrial and institutional markets, 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 www.wiegmannassoc.com or call (636) 940-1056.