Full service engineering, commissioning
and survey-
All in one place

Who Are We?

Founded in 1991, Heideman Associates, Inc., a Zak Company, has built a strong foundation on client trust by exceeding expectations every step of the way. For over 25 years, we have offered the full spectrum of consulting services. Our offices are headquartered in Fenton, Missouri. All proposed personnel and services will be provided from this location.


The professionals at Heideman are justifiably proud of the skill, experience, and quality that we bring to every project. We believe that building the best relationships with everyone involved in your project will result in the best project outcome. We work hard to understand and meet the expectations of our clients for every aspect of the work for which we’re responsible. Heideman has made the investment in people, processes, and technology to successfully deliver your project.


Passion is the key to success. Passion, clear vision, drive, and our repeat clients. Just ask them and they will tell you that we are more than just an answer to project needs. We are your partners to help you reach the next level of exceptional. 

-Robert Zak, Jr., President

full service engineering

Civil, Structural and survey

Heideman Associates civil engineer division can take a project through planning and zoning, preliminary design, mapping/platting, and ultimately to the final design stage where the project is ready for bid and construction. Thereafter, we provide construction support through plan clarification, contractor and field surveyor coordination, and as-needed plan revision. Additionally, HAI can provide services for topographic surveying, boundary surveying, structure assessments, both composite and non-composite action, and substructures.

electrical and low voltage systems

The electrical team is fully equipped to assist with design of electrical systems, design of low, medium, and high voltage power distribution and emergency power generation, specialized electronic grounding and lightning protection systems, load calculations, code review, equipment selection, equipment room layouts, and CUP modifications.


Our certified commissioning authorities are here to ensure that all systems and components of buildings are designed, installed, tested, operated, and maintained according to the operational requirements of the owner or client. Our team of experts are thoroughly familiar with requirements for LEED certification.

mechanical and hvac

If you need design of mechanical systems, specialist in HVAC systems and fuel systems, or DDC temperature control system specifications then our Mechanical team is your go to source.

plumbing and fire protection

If you are in need of design of plumbing piping systems, equipment selection, writing specifications, site condition verification for plumbing and fire protection systems, then we have a team of experts ready to assist!

lod 350 building information model

We work with the most talented staff and the latest technology for all of our services especially when it comes to BIM level of development. We use LOD 350 which includes model detail and elements that represent how building elements interface with various systems and other building elements with graphics and written definitions.

Contact us

Main Office

240 Larkin Williams Ind. Ct.
Fenton, MO 63026
(636) 492.3200

-Franklin Mechanical, Inc.
-Heideman Associates, Inc.

Franklin Drain Services, Inc.

240 Larkin Williams Ind. Ct.
Fenton, MO 63026
(636) 492.3201

K & F Electric, Inc.

2622 West Boulevard
Belleville, IL 62221
(618) 277.5781

4970 E. Beverly Rd.
Phoenix, AZ 85044
(602) 267.0100

Zak Controls, Inc.

4970 E. Beverly Rd.
Phoenix, AZ 85044
(602) 288.3304

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