CP & H, Inc

W.G. Tomko, Incorporated is a full-service mechanical contracting company that offers construction, plumbing and water treatment services. It operates a service department and prefabrication shop. The company provides design/build, boring, and lime and product conveying services. W.G. Tomko, Incorporated has completed projects for McKeesport WWTP, PWSA Chemical Facilities, PWSA Highland Reservoir Filter Facility, SCI Forest County Prison, Pittsburgh International Airport, Squirrel Hill, Thaddeus Stevens College and PNC Park. It offers installation services for heating, ventilation and air conditioning systems. The company undertakes projects, including Clarion University, West Virginia University, Avonworth High School, Harrisburg Parking Garage and Emerald Mines. W.G. Tomko, Incorporated conducts safety and health programs.

Limbach Holdings Inc., based in Pittsburgh, PA, is a leading building systems solutions firm specializing in critical mechanical, electrical, plumbing, and HVAC infrastructure. With a revenue of $518.8 million in 2024, Limbach partners with building owners and facilities managers to provide essential services that ensure the seamless operation of their businesses. Recognized as one of U.S. News Best Companies to Work For, Limbach is committed to maintaining a culture of belonging, diversity, and employee development. By focusing on sustainability and energy efficiency, the company helps clients optimize their energy strategy while reducing operational costs and environmental impact. Generated from the website

McKamish has more than 30 years of experience as a leading mechanical contracting company that serves commercial, institutional and industrial customers both large and small. The company has worked to satisfy the mechanical contracting needs of projects as diverse as community banks, steel mills, manufacturing facilities, hospitals, universities, research facilities, food processors, the amusement industry, multi-family residential units and the retail industry. Its staff is experienced in working with architects, engineers, owners and developers, plant managers and other contractors to deliver a quality product within specifications and on schedule. The company has the expertise to serve as either the prime or subcontractor. McKamish is located in Pittsburgh.