Limbach Holdings Inc. is a commercial specialty contractor providing building systems solutions focused on mission-critical mechanical, electrical, plumbing, and building controls infrastructure. The company delivers services for the design and construction of new and renovated buildings, including maintenance, energy retrofits, and equipment upgrades. It operates through two primary segments: General Contractor Relationships, which handles new construction or renovation projects primarily involving HVAC, plumbing, or electrical services; and Owner Direct Relationships, which offers maintenance and services on HVAC, plumbing, electrical systems, building controls, and specialty contracting projects, representing the majority of its revenue. Limbach Holdings Inc. serves key vertical markets such as healthcare, industrial and manufacturing, data centers, life sciences, higher education, and cultural and entertainment facilities. With approximately 1,700 team members across 21 offices, it emphasizes expanding owner-direct relationships and national customer solutions. Founded in 1901 and headquartered in Warrendale, Pennsylvania, Limbach Holdings Inc. plays a vital role in supporting essential infrastructure for critical building operations nationwide.