Wilhelm Construction > About > Affiliates


Learning by doing, developing best practices, and informing future processes from both a management outlook and a hands-on builder evaluation creates a multi-perspective environment where brilliant ideas are discovered, implemented and shared. And, that leads to great project delivery.

Wilhelm’s ability to self-perform all aspects of construction is what differentiates us as expert managers of construction. Building on our own self-perform strength, we are connected to a network of affiliate companies providing mechanical, HVAC, process piping, and electrical systems construction, as well as, commissioning and test and balance of air and water systems, and life safety systems design and installation.

Construction needs? Wilhelm’s got you covered!

The benefits gleaned from engaging Wilhelm’s top tier construction management and self-perform team have direct and significant positive impacts to schedule delivery, quality, safety, and financial outcomes. Including our self-perform team expertise at all levels of design, preconstruction, and construction brings unmatched comprehensive perspectives to challenging topics such as labor force availability, diversity inclusion, workforce development, prefabrication planning and quality and safety standards and protocols. Our unique combination of experiences lead to innovative approaches and solutions for clients’ most challenging and difficult hurdles.

Freitag-Weinhardt, Inc.

Founded in 1883, this nationally recognized mechanical contractor provides production, installation and on-going maintenance and repair for facility systems, including plumbing, HVAC, and process piping. They specialize in heavy industrial applications and high-end fabrication, providing comprehensive services from energy-efficient temperature control, to equipment erection and setting, to orbital pipe welding.

Industrial Electric, Inc. (IEI)

Industrial Electric, Inc. (IEI) is a full service electrical and systems contractor, focusing on industrial, advanced technology and commercial projects. They perform both design-build and bid/spec electrical contracting services for the industrial, commercial, and pharmaceutical markets, offering complete turnkey service and installation.


Poynter is the “Go To” provider for all things metal. Located in Greenwood, Indiana, this is the state’s largest full-service sheet metal and custom metal source, delivering high quality fabrication, installation, and design and engineering services. Clients rely on Poynter for everything from traditional HVAC ductwork to more complex ventilation systems, stairways, railings, specialty laser-cutting customizations, duct cleaning, industrial tanks, on-going maintenance, structural production and emergency response services.

RSQ Fire Protection (RSQ)

RSQ Fire Protection (RSQ) is a full-service automatic sprinkler contractor experienced in fire protection design and engineering, and installation and coordination. RSQ provides testing and maintenance of all types of fire suppressant systems.

Self-perform services include:

  • Demolition
  • Excavation
  • Concrete
  • Masonry
  • Structural Steel
  • Miscellaneous Steel
  • Commercial Sheet Metal
  • Industrial Sheet Metal
  • Pipe and Vessel Fabrication
  • Carpentry
  • Interior Finishes
  • Equipment Installation
  • Erecting/Setting Equipment
  • Equipment Alignment
  • Process Piping
  • HVAC
  • Plumbing
  • Lighting Systems
  • Building Systems
  • Telecommunications
  • Instrument Installation
  • Fireproofing / Fire Protection
  • Commissioning
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