Commercial HVAC & Building Automation Experts


Wiegmann Commercial HVAC Services
We design, install and service HVAC and building automation control systems for hundreds of commercial buildings clients nationwide, in a wide range of industries. We use our knowledge of how buildings really operate to provide the most cost effective and energy efficient HVAC solutions, for both new construction and renovations.
We offer turnkey design, construction and building automation systems (BAS) that allow the systems to be controlled from a single location.
Commercial HVAC Challenges We've Tackled:
- Replaced the antiquated HVAC system at the St. Charles Old Post Office with one that minimized first costs and conserved energy. Preserved architectural features of the historic building through creative design concepts such as new electric baseboard heaters concealed behind original Victorian-era cast iron radiators.
- Engineered and installed a new HVAC system for the eight-building Simon St. Louis Premium Outlet Mall. Met a tight schedule through organization and efficiency, setting 181 rooftop units in a single day.
- Installed a boiler system for in-floor radiant heat and air conditioning for a historic building at the Westwood County Club. Carefully scheduled and coordinated the project for the comfort and safety of members during construction.
- Replaced the VAV systems and FTUs and installed a new Building Automation System for the 55,680 sf offices of NISA Investment Advisors, located in a downtown high-rise. The work was completed efficiently despite the busy location and lack of a freight elevator to distribute equipment and duct work to the two office floors.

Featured Commercial Projects
Click on the links below to view some of our featured Commercial HVAC Projects.
- Proper Brands Marijuana Cultivation Facility — St. Louis, MO
- Elekta Product Supply & Support Center — St. Charles, MO
- Budnick Converting Corporate Office — Columbia, IL
- Edison District — Overland Park, KS
- 12-Story Student Apartment & Retail Complex
- Hubbell Incorporated Killark Electric Facility — Fenton, MO