Limbach Holdings, Inc. is a medium-risk commercial specialty contractor in the United States of America. Specializing in heating, ventilation, air conditioning, plumbing, electrical, and building controls, the company offers services for new construction, renovations, maintenance, energy retrofits, and equipment upgrades. With a focus on ESG principles, Limbach Holdings operates in two key segments: General Contractor Relationships (GCR) and Owner Direct Relationships (ODR), with the ODR segment contributing the highest revenue.