Generoso P Unsay

Generoso P Unsay United Mechanical Division, doing business as United Mechanical, is a sole proprietor self-certified small disadvantaged business based in Dededo, Guam, that operates as a subcontractor (24% of recent awards) and prime contractor (76%) providing HVAC, plumbing, fire suppression, and mechanical building systems installation and maintenance to Department of the Navy and Department of the Air Force construction and facilities projects in Guam and the Pacific. The vendor's primary work sits under NAICS 238220 (Plumbing, Heating, and Air-Conditioning Contractors) and PSC categories for building maintenance, repair, and alteration.

The Department of the Navy Naval Facilities Engineering Command dominates customer concentration, accounting for 7 awards and $4.4 million in combined potential value — 94% of all awards across the top five customer agencies. The Department of the Air Force Pacific Air Forces holds the second-largest potential value position at $725 thousand across two awards, with additional Air Force work through the Defense Finance and Accounting Service and Navy Installations Command completing the active customer set. United Mechanical holds positions on the NAVFAC MACC Guam and Other Areas in Pacific task order vehicle (2 task orders) and the Facilities and Infrastructure for U.S. Military Construction Projects vehicle (1 task order).

Recent representative work includes a January 2025 subcontract under Granite-Obayashi 2, a joint venture, for HVAC system and building plumbing installation on a 9th ESB Equipment and Maintenance Facility at Naval Base Guam, and two December 2022 and September 2022 subcontracts under Gilbane Smcc ECC LLC for fire suppression, plumbing, HVAC, and radon mitigation systems on Infantry Battalion Company Headquarters and Combat Logistics Battalion-4 projects at Marine Corps Base Guam. Activity shows sparse recent placement — one award in 2025 after a multi-year gap — though the vendor's combined dollars obligated ($28.3 million across all awards) exceeds combined potential value substantially, indicating substantial execution against project-based construction work.

Full Service Air Conditioining Specialty Contractor for most major commercial, federal/local government projects. Capable of working on electrical and plumbing work.