Work with the Premier Mechanical and Plumbing Contractor in SW OH and KY

With more than 100 years of experience, you can count on The Thomas J. Dyer Company to complete even the most complex project while meeting your highest expectations.

We’re dedicated to providing the highest value to our customers. Our experienced professionals deliver on this promise through efficient start-to-finish project management — from estimating to commissioning. In addition, we use pre-fabricated assemblies and apply the latest technology, including 3D Building Informational Modeling (BIM), GPS based layout solution and on-screen 3D estimating software, for optimal results.

Our expert team has extensive expertise in completing mechanical and plumbing projects for:


Higher Education

Sports Arenas & Stadiums






Research & Development


Retail & Restaurant

Our Capabilities


  • HVAC design
  • Mechanical “Design Assist” engineering
  • Integrated Project Delivery (IPD)
  • Building Information Modeling (BIM)
  • Systems coordination
  • Design/Build

Energy Management Systems

  • Complete building automation
  • Programming services
  • DDC controls
  • Electronic & pneumatic controls
  • Complete design & installation

How we put BIM to work for you

BIM is an ideal tool for mechanical construction, saving time and money. It detects clashes or interferences with other trades and finds alternate paths for pipe/duct/conduit and other equipment.

In addition, BIM creates a virtual information model that can be transmitted between design team members, contractors, the owner and more, allowing each to contribute based on their individual expertise. And this method improves efficiency by tracking changes on a single model.

BIM can greatly decrease conflicts often not identified until the installation phase through clash detection, which informs team members of conflicts in the design. Resolving conflicts during the design phase — instead of the construction phase — reduces the number of submitted RFIs. This improved efficiency reduces change orders, schedule extensions and the final cost.

Project Portfolio

GE Global

The GE Global Operations Center was completed in 2016. The 352,000-square-foot headquarters is a stunning addition to the banks of the Ohio River. The Thomas J. Dyer Company for planning, specifying and installing the HVAC system.

UK Science Building

The Academic Science Building at UK is a 240,000-square-foot laboratory and classroom facility. It was completed in 2016. The Thomas J. Dyer Company was tasked with an aggressive schedule to install the HVAC/Plumbing and relied heavily on prefabricating miles of plumbing racks.

Miami U Geothermal

Miami University’s new geothermal plant was completed February of 2015. The $9 million project provides hot and cold water to three new dorms and a new dining hall on western campus through 72 miles of underground piping saving the university an estimated $1.5 million a year in total energy cost. The Thomas J. Dyer Company installed the HVAC/Plumbing systems and helped plan and spec out the project.

Christ Hospital

The 365,000-square-foot expansion to the existing hospital is home for musculoskeletal medicine. The $280 million project was completed in November 2015. The Thomas J. Dyer Company used its fabrication technology to build and install corridor racks due to the tight logistics and schedule.

The Ark Encounter

This project is a creationist theme park and the centerpiece of the park is a large representation of Noah's Ark spanning 510 feet long. The Thomas J. Dyer installed a VRF and HVAC systems.

University of Kentucky Research Building #2

The University of Kentucky’s Research Building 2 is a state-of-the-art research facility focused on Kentucky health disparities that impact the state. This $265 million dollar building that has an overall design of 300,000 square feet will accommodate over 500 researchers such as Principal Investigators, postdoctoral scholars, graduate and undergraduate students. Thomas J. Dyer’s overall scope of work consisted of installing fourteen air handling units, High-Pressure Steam Systems, Chilled and Hot Water Systems, HVAC Systems, and an Energy Recovery System that will help save the university thousands of dollars annually by recovering and reusing energy in the HVAC systems.

University of Kentucky Patient Care Facility

The 1 million-square-foot hospital is still under construction. This state-of-the-art facility is a key milestone in achieving University of Kentucky’s vision to become a world-class academic medical center and the state’s most comprehensive and advanced health care system. The Thomas J. Dyer Company is currently involved in the installation of the HVAC/Plumbing systems.

Kentucky Horse Park

The Kentucky Horse Park features 5,700 stadium seats and nine suites with 200 suite seats, a 135 x 300-foot (41 x 91m) event floor (equal to one US football field or four basketball courts) with special equine surface, 20,000 square feet (1,858 square meters) of exhibitor space, six concession areas, a warm-up barn, outdoor warm-up ring, and bathrooms with 91 stalls. The Thomas J. Dyer Company specified and installed a state-of-the-art HVAC system that included a special system for live animals and smoke evacuation.

Queen City Tower

Great American Tower at Queen City Square is a state-of-the-art 41-story office tower located in the heart of downtown Cincinnati’s business district. The over 800,000-square-foot building provides highly-efficient floorplates ranging from 21,000-26,000 square feet on its 33 office floors. The Thomas J. Dyer Company installed an Advanced HVAC/Plumbing systems and is currently servicing the Tower’s needs.

Indu & Raj Soin Medical Center

The 400,000-square-foot hospital complex services the healthcare needs in Dayton, Ohio. The $135 million hospital was completed February 2012. The Thomas J. Dyer Company helped budget and price the project as well as winning the installation of the HVAC and Plumbing systems.

P&G MBC Campus Expansion – Buildings K&M

The Cincinnati based consumer products company has created a 1.2-million-square-foot Beauty Innovation Center to focus on research and development for products such as Olay, Old Spice and Pantene. The Thomas J. Dyer Company was involved with the installation of the HVAC/Plumbing systems in Buildings K & M.

Toyota TMMK Reborn Paint

Since 1988, Toyota has been manufacturing cars in Georgetown, KY. In recent years, the plant has been expanded to increase capacity. The Thomas J. Dyer Company is currently on site working on these expansions, including large HVAC systems that had to be lifted by helicopter.

University of Kentucky Student Center

The 378,000-square-foot facility with rooftop gardens, fire pits, high-tech meeting rooms and full commercial Kitchens. The Thomas J. Dyer Company was involved with the installation of the HVAC/Plumbing systems.

Cincinnati Union Terminal Renovation

The project consists of a major historical renovation to the interior architecture, complete replacement of the MEP systems, a large site work package, and an extensive exterior renovation and restoration. The Thomas J. Dyer Company was involved with the installation of the HVAC/Plumbing systems.

University of Cincinnati Fifth Third Arena Renovation

The 220,000-square-foot renovation of the multi-purpose arena will be transformed to a modern 360° seating bowl for approximately 11,500 spectators with updated concessions, to seating options and newly renovated suites. The Thomas J. Dyer Company was involved with the installation of the HVAC/Plumbing systems.

Liberty Center

Situated between Cincinnati and Dayton, Liberty Center brings together over 100 acres to form a community-centric and balanced approach to private-public place to work, shop, eat and live. The Thomas J. Dyer Company finished on site in 2015 with multi HVAC/Plumbing. Multi-systems were engineered to be prefabricated onto a skid in order to meet the demand of the schedule.

Xavier University Alter Hall

Historically, Alter Hall has been the central classroom building for Xavier University. The $18 million retrofit was completed on time for the 2015 fall semester. The Thomas J. Dyer Company assisted on the design, and was able to streamline the installation of the HVAC/Plumbing systems.

Mercy West Hospital

The 645,000-square-foot hospital complex sits on 60 acres off North Bend Road, just south of Interstate 74 in Cincinnati, Ohio. The $270 million complex was completed November 2013. The Thomas J. Dyer Company used its fabrication technology to develop, build and install corridor racks to finish the job in under 18 months.

Paul Brown Stadium

The home of the Cincinnati Bengals NFL team, this 65,353 seat stadium was completed in August 2000. The Thomas J. Dyer Company installed the HVAC and Plumbing Systems on this $455 million facility and continues to support and upgrade its systems today

Great American Ballpark

The home of the Cincinnati Reds MLB team, this 42,300 seat stadium was completed in April 2003. The Thomas J. Dyer Company installed the HVAC and Plumbing Systems on this $29 million dollar facility and has continued the relationship with the customer through service/maintenance and small projects.

UC Medical Sciences Building

The Medical Science Building (MSB) at the University of Cincinnati underwent a $170 million phased renovation completed in 36 months of 2008. The Thomas J. Dyer Company installed the major HVAC and critical exhaust systems to maintain clean lab environments.