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Your Single source for DESIGN and CONSTRUCTION services

The Zak Family of Companies

Residential and commercial drain cleaning with unparalleled around-the-clock service. 

Full service mechanical and plumbing contracting for both residential and commercial applications.

Top of the line engineering and land surveying services specializing in healthcare and data centers.

Residential, Commercial, Solar, and so much more. Learn how we can help you with your next project.

Design and manufacturing of electrical control panels using the latest state-of-the-art technology.

Your single-source for design and construction services. Learn more about the synergy of Zak Companies and how it works for you.

About Us

Since 1991 Zak Companies subsidiaries has had experienced staff that has provided for the needs of our clients. More than 50% of our clients have been with us for over 20 years.

Zak Companies provides specialized construction related services to clients, from Pre-Design through Construction Management and has the ability to manage an individual project or a group of projects, in engineering or construction.

We care about our clients and their projects. When it comes to completing a project we want to ensure it’s not only completed but exceeds the client’s expectation. Our synergy of companies allows us to partner with client’s in multiple ways to be their go to source for all of their design, construction, and engineering needs. 
-Robert Zak, Jr., President

Synergy is what you get when you select The Zak Family of Companies— Heideman Associates, Inc., Franklin Mechanical, Inc., K&F Electric, Inc., Zak Controls, and Franklin Drain Services, Inc. These sister companies bring a superior blend of experience, services, and expertise—resulting in synergy that pays off in an outstanding project for you! 

Synergy in Access to Resources and Support. As members of Zak Companies, Heideman Associates, Franklin Mechanical, K&F Electric, and Franklin Drain Services all receive the same support and access to internal resources for education, networking, hardware, software, and technical support. And since Heideman Associates, Franklin Mechanical, K&F Electric, and Franklin Drain are sister companies, our BIM expertise and modeling capabilities are one in the same.  The result is a team effort that is seamless to our clients. 

Successful project delivery is a numbers game—one that the Zak sister companies play with great skill.  Give us the opportunity to demonstrate how well we can make it all add up to project savings for you!

Why is zak companies your "single-Source"?

Full-Service Engineering AND LAND SURVEY

From land survey and civil site work to full service Civil, Structural, Mechanical, Electrical, and Plumbing engineering (and everything in-between), we've got you covered!

Electrical and solar energy contracting

From small scale residential work to large commercial projects to pioneering the way for the solar industry, we are proud to bring professional electrical contracting to you across the country.

Drain and sewer services

Commercial and residential drain cleaning, sewer repair, hydroflushing, and more. We're here for you 24/7.

Mechanical and Plumbing contracting

Our full service mechanical contracting company utilizes the latest technology to make sure that your project will be not only be functional, but downright boast-worthy for decades to come.

building information modeling

One of the first and only engineering firms to offer Level of Design 350 on our BIM models. The highest level of collision detection available to ensure a better all-around quality project.

control panel manufacturing

One of the few based in the southwest, that provides full-service system integration and design services, that holds and maintains a UL508 Certification.

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

490 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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