Madden Plumbing & Hvac Inc.

Madden Plumbing & HVAC Inc., a small business based in Beltsville, Maryland, provides HVAC system replacement, maintenance, and emergency repair services to federal civilian agencies as both a prime contractor (50% of recent awards) and a subcontractor (50% of recent awards), with no set-aside designation on most prime work. Operating under NAICS 238220 (Plumbing, Heating, and Air-Conditioning Contractors) as a for-profit Subchapter S corporation, the vendor has completed roughly $263 thousand in combined potential value across ten recent awards, though obligated dollars total $699 thousand, indicating active invoicing or option-year drawdowns.

Customer concentration is dominated by the Department of the Interior Fish and Wildlife Service. DOI Fish and Wildlife Service Region 5 anchors the prime portfolio with three awards totaling $201 thousand in combined potential value, including a $194,920 total small business set-aside purchase order awarded September 20, 2024, for HVAC system replacement at the Patuxent Research Refuge Service Building #109 in Laurel, Maryland (high-efficiency variable refrigerant flow heat pump installation with a performance period of three months, completion extended to May 30, 2025), a $58,801 total small business set-aside purchase order from September 16, 2024, for HVAC unit replacement and installation at the same facility, and a $3,189 emergency HVAC repair award from August 7, 2024. Two additional DOI Fish and Wildlife Service awards (non-Region 5) total $62 thousand and cover thermostat replacement and routine HVAC maintenance. The vendor has also worked with the Department of Labor Office of the Assistant Secretary for Administration and Management, the Office of Personnel Management, and the General Services Administration Public Buildings Service National Capital Region. The top five customer agencies account for 90% of awards by count and 100% of combined potential value.

On the subcontractor side, Madden Plumbing performs under Trademasters Service, Inc. on facilities management and O&M work, including window drain clearing and cleaning, sewer line repair, monthly jetting, and sump pump and backflow valve replacement work at the ATF National Headquarters in Washington, D.C., and under Department of Labor contracts, with five sub-awards dating between September 2025 and September 2026. The vendor sits on a Multiple Award Schedule with eight task orders placed against it. Activity has accelerated in 2026 (six awards year-to-date) after a single award in 2025 and three in 2024. One award faces ultimate completion within the next twenty-four months, carrying minimal recompete exposure. The vendor's scope remains localized to facilities maintenance in the National Capital Region and Maryland, with no evidence of geographic or capability expansion beyond HVAC and plumbing services.