About MSS
About Us
Since 1996, MSS has been a leading mechanical contractor delivering commercial HVAC services, building automation systems, fire and life safety, security, and energy solutions for commercial and critical facilities across the Carolinas and throughout North America. We help owners, operators, and facility managers improve efficiency, comfort, safety, and reliability in healthcare, commercial office, industrial, and mission-critical environments.
With more than 800 employees across nine locations, MSS provides responsive, local HVAC service and mechanical expertise throughout North and South Carolina. For multi-site portfolios, our in-house project managers and vetted subcontractor network ensure consistent, high-quality service nationwide. From major hotel brands and financial institutions to utilities and retailers, organizations trust MSS as a single-source provider for HVAC, mechanical, and facility solutions across North America.
Our Expertise
As a trusted design-build and design-assist mechanical contractor, MSS specializes in HVAC construction and integrated project delivery. Our experienced estimating, engineering, and operations teams evaluate project requirements to deliver cost-effective, high-performance solutions. We collaborate with engineering partners or provide in-house engineering services to streamline execution, reduce risk, and optimize system performance—while staying aligned with the owner’s budget and goals.
Who we serve
At MSS, we believe workplace safety is about people—not assets. Every individual brings unique skills and value, and each deserves to return home safely at the end of every workday. Therefore, we prioritize the health and safety of our employees, clients, subcontractors, and vendors across every project. In addition, our safety-first culture ensures that no business objective, short-term convenience, or profit takes precedence over well-being.
Moreover, our commitment to jobsite safety and risk management is reflected in measurable results. MSS consistently maintains an Experience Modification Rate (EMR) and OSHA incident rate well below industry averages. As a result, clients can trust our team to deliver not only high-quality work, but also safe, compliant, and reliable project execution.
GOLD AWARD Recipient
5 Consecutive Years
Our Leadership Team
