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helping customers succeed

Marshall Engineering Corporation

A Texas licensed professional mechanical, electrical, and plumbing engineering and consulting firm - helping our customers through services and solutions!
Marshall Engineering Mechanical Electrical Engineering

mechanical / electrical engineering

Marshall Engineering Corporation (MEC) is uniquely qualified to perform mechanical engineering design services.

The breadth of our experience is base on over 170 years of combined experience in designing mechanical and HVAC systems. Our experience ranges from small (direct expansion) systems to multi-zone chilled water hydronic systems.


Marshall Engineering Plumbing Engineering

plumbing / Piping engineering

MEC’s Plumbing and Piping design centers around proper sizing of supply and drain lines as required by code. Special consideration is given to applications that require plumbing facilities that exceed code requirements.

Marshall Engineering Planning Consulting Services 2

planning / consulting services

MEC utilizes the concept of “just in time” management of project and construction management.

This is a long tested concept in the commercial and industrial construction community and many projects have been (and are being) managed effectively using these concepts. ‍‍‍

About us

We believe in TEAMWORK!

Marshall Engineering Corporation is located in Humble, Texas (USA) and has been in business since 1996 with a professional staff that has over 135 years of experience in contract and project management, mechanical, electrical, plumbing/piping engineering and design.

We believe in excellent customer service with our clients.

The Marshall Engineering team brings with it a depth of knowledge that comes from years of individu‍‍‍al technical experience as well as a proven track record of working on high performing teams

We take pride in the relationships we build with our clients.

We have steadily grown by ta‍‍‍rgeting industrial, commercial, government, municipals, universities, school districts, aviation, transportation and petro–chemical markets.

Open positions:

We currently have an immediate opening for a Mechanical Engineer. To learn more about this opportunity please click the icon.

Committed to Building

It is the mission of Marshall Engineering Corporation (MEC) to be the leader in providing value added Engineering and Consulting services worldwide, at a profit.

To accomplish this, MEC is committed to understanding the nature of Our Customer’s business and then delivering superior quality, value added services designed to help our customers succeed.

F.E.E.D.  Encouraging the growth of our customers by providing  MEP solutions, while helping them succeed. 

F – Follow Processes

E – Educate the Customer

E- Excellent Customer Service

D- Develop Relationships

By following a systematic approach, we repeatedly meet our customers needs because we believe that a satisfied customer is our most valuable product.

Featured projects
  • All
  • Commercial
  • Government
  • Industrial
  • Religious Facilities
  • Sports Facilities
  • Transportation

Solution Providers

Trusted by leading institutions from consulation to implementation!
Working with us

clients will receive Excellent Customer Service


I refer Marshall Engineering often to my colleagues.  Unsurprisingly, my positive experiences with MEC are not at all uncommon among those referrals. K. Arch Designs Various Projects

K Arch Designs

MEC provides lighting and power design in support of the West White Oak Bayou Trail Extension Project.  MEC's performance on the project was exceptional and CDGCE will continue to maintain a professional association with the firm. ~Charles D. Gooden Consulting Engineers, Incorporated.

Charles D. Gooden

Marshall Engineering Corporation looked out for the interest of the institution, provided timely solutions and helped solve any issues with regards to Mechanical, Electrical and Plumbing.  Ray Marshall is extremely knowledgeable and very professional and stayed involved in the project from start to finish.  I not only recommend Ray Marshall and his company, but look…

Harrison Kornberg Architects LLC

Companies we have worked with