Our Services
Commercial HVAC
Commercial HVAC design, installation, repair, maintenance, and equipment replacement for complex building systems.
Commercial Plumbing
Mechanical plumbing services for commercial buildings, including design, construction, repair, and long-term system support.
Preventative Maintenance
Customized HVAC maintenance agreements with scheduled visits, priority response, reduced breakdowns, and improved equipment life.
Design, Fabrication & Energy Management
Mechanical consulting, design/build construction, sheet metal fabrication, equipment replacement, controls, and energy management systems.
About Us
Smith Mechanical, Inc. is a Columbia, Maryland-based commercial mechanical contractor serving businesses and institutions throughout Central Maryland. With roots tracing back to 1968, the company works directly with building owners, managers, tenants, builders, and end users from initial consulting and system design through construction, installation, maintenance, repair, and long-term mechanical support. Smith Mechanical specializes in commercial HVAC, plumbing, mechanical design/build construction, sheet metal fabrication, equipment replacement, energy management systems, preventative maintenance agreements, and on-demand HVAC and plumbing repair. Its service team maintains commercial systems including air handlers, boilers, chillers, computer-room environmental units, controls, cooling towers, packaged units, PTAC equipment, pumps, rooftop and split systems, and ventilation equipment. The company’s long-standing focus on commercial mechanical systems rather than trying to serve every segment of the HVAC market gives it particular depth as a single-source mechanical partner for building owners and facility managers.