Premier Mechanical and Plumbing Contractor on Large, Complex Construction Projects since 1908


The Process & Industrial Piping Expert


High-quality Provider of Specialty Welding and Fabricated Components

The Thomas J. Dyer Company is a full-service mechanical and plumbing company that has performed high-quality installation, process & industrial piping and fabrication for a variety of facilities throughout the U.S. since 1908. Our highly skilled team is committed to providing our customers the premier level of service, expertise and professionalism in the markets we serve.


Look to the experts who can complete the most complex project while meeting your highest expectations. We have extensive expertise in completing mechanical and plumbing projects for:

  • Hospitals
  • Educational facilities
  • Stadiums
  • Food, chemical and manufacturing plants
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Process & Industrial

Our licensed and certified specialists will conduct ongoing maintenance on your pipes and fixtures. We have a full offering of Industrial & Process Piping services for:

  • Process piping system
  • Heavy industrial
  • Oil and gas
  • Steam and cooling
  • Manufacturing plants
  • Food and beverage
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Our highly efficient and scalable fabrication division serves a wide range of applications, including skid design, pipe configuration and other components used in a variety of industries.

  • Petroleum
  • Specialty chemical
  • Agriculture
  • Enzyme
  • Mixing
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Project Portfolio

UC Health ED/SI Expansion and Renovation

The Thomas J. Dyer Company has been awarded UC Health's expansion and renovation projects for their Surgery Infill Building Addition, ED Primary Building Additions, and ED Renovations.

University of Dayton Center for the Arts

The Thomas J. Dyer Company has been awarded the University of Dayton's Center for the Arts, a space for theater, dance, media, and art students.

Miami University McVey Data Science Building

The Thomas J. Dyer Company has been awarded a new Design Assist project for the McVey Data Science Building for Miami University.

Xavier University Cintas Center – Klekamp Family Training Center

The Thomas J. Dyer Company collaborates with Diversey owner and design engineer to develop systems, layout tank farms, and process equipment rooms for Diversey's new Elsmere, KY location.

Diversey – Project Megalodon

The Thomas J. Dyer Company collaborates with Diversey owner and design engineer to develop systems, layout tank farms, and process equipment rooms for Diversey's new Elsmere, KY location.


TJ Dyer was brought into this Refinery Shutdown project early on in the planning phase to come up with a budget and a schedule for the entire refinery shutdown. We generated a manpower and cost loaded P6 (Primavera) schedule for all trades. During the two-week outage, we completed 12,500 total field man hours, 1,100 shop fab hours of demo, upgraded piping installs, valve replacements and safety management on the refineries’ major fixed equipment and all of the piping systems.


Alkermes is a pharmaceutical manufacturing facility located in Wilmington, OH. The multi-phase project consisted of a clean steam generator and associated distribution piping which included over 2,000 feet of orbitally welded stainless steel piping. The project also included 1,000 feet of WFI (Water for Injection) piping that was also an orbitally welded system. The final phase of work final connections to process equipment serving their production equipment. The project also required 142 tie-ins to multiple existing services over three shutdowns during the duration of the project.

Koch Foods

In 2018 Koch Foods in Fairfield, OH underwent an expansive utilities upgrade to their existing facility. The thermal heating system was upgraded to a new 25,000 gallon 35 million BTU 4 burner unit. Over 600 feet of 18” full X-ray welded carbon steel distribution piping serves the existing facility. Our scope of work also included one 72-hour shutdown to tie in new distribution piping to cooking equipment to eliminate all but one day of processing time.

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Todd Wilking – P & I Project Manager Awarded 2021 Core Values Award 

Congratulations to Todd Wilking, one of the Grote Family of Companies’ Project Managers, who was presented with the 2021 Core Value Award from TJ Dyer.

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