M&H UNITED LLC

M&H UNITED LLC specializes in facility systems maintenance and mission-critical support services for federal installations, with deep expertise in HVAC installation and repair, security systems integration, and facility infrastructure remediation. The contractor delivers turnkey solutions for plumbing, heating, and air-conditioning systems, including ductless split heat pumps, packaged HVAC units, and refrigeration repairs, often in sensitive government environments. Complementing this, they provide integrated security services—ranging from unarmed patrols to surveillance camera installations and locksmithing for access control systems—alongside specialized support such as loading dock repairs, material recovery operations, and industrial equipment maintenance. Their technical proficiency spans both mechanical and electronic systems, demonstrating adaptability across diverse facility types, from VA medical offices to NOAA weather stations and Department of Justice correctional facilities. The company maintains a strong, recurring relationship with the Department of Veterans Affairs, delivering a broad spectrum of facility services including HVAC, security, locksmithing, and infrastructure repairs critical to veteran service delivery. They also support the Department of the Interior with environmental facility upgrades and have delivered security and systems work for the Department of Defense and Department of Justice. Their consistent engagement with VA suggests a trusted, operational partnership focused on sustaining mission-ready facilities. M&H UNITED LLC’s primary industry focus is in plumbing, heating, and air-conditioning contracting (NAICS 238220), with secondary capabilities in security services (NAICS 561621, 561622), facilities support (561210), and materials recovery (562920). This positions them as a niche, multi-disciplinary facility services provider, uniquely qualified to handle integrated building system needs in federal environments where reliability and compliance are paramount. As a Service-Disabled Veteran-Owned Business based in Fayetteville, North Carolina, the company leverages its certification to serve federal agencies with a commitment to veteran-led excellence. Their operational footprint spans multiple federal sites nationwide, with a demonstrated ability to execute complex, time-sensitive repairs and installations across diverse government infrastructure.