Limbach Holdings, Inc. provides commercial specialty contract services in the United States. It operates in two segments, Construction and Service. The company provides services in the areas of heating, ventilation, air-conditioning (HVAC), plumbing, electrical, and building controls for the design and construction of new and renovated buildings; maintenance services; and equipment upgrades. Its facility services comprise mechanical construction, HVAC service and maintenance, energy audits and retrofits, engineering and design build, constructability evaluation, equipment and materials selection, procurement, and commissioning. The company also offers building services, such as plumbing, piping and fire protection, and controls and automation services. It serves healthcare, education, gaming and hospitality, government, and commercial office markets. Limbach Holdings, Inc. was founded in 1901 and is headquartered in Pittsburgh, Pennsylvania.