Centerline Mechanical LLC

Centerline Mechanical LLC, a Tucson-based woman-owned, minority-owned small disadvantaged business, operates as a prime contractor delivering HVAC, refrigeration, and mechanical infrastructure maintenance and repair services to federal facilities across the Southwest, competing predominantly under total small business set-asides and full-and-open vehicles with no subcontractor footprint. The company is structured as a limited liability company and has maintained a federal presence since at least 2007.

Centerline's capability portfolio centers on preventative maintenance, emergency repairs, and equipment replacement for chiller systems, cooling towers, compressors, condensers, walk-in freezers, and HVAC infrastructure at federal research facilities, military installations, and VA medical centers. Representative work includes a $408 thousand definitive contract (October 2022–September 2027, total small business set-aside) with the VA Veterans Health Administration for walk-in refrigerator and freezer preventative maintenance at Southern Arizona VA Healthcare System covering fourteen units, two cooling towers, and emergency response requirements; a $1.241 million HVAC preventative maintenance delivery order exercising Option Year 3 (April 2023–March 2028, total small business set-aside) under the GSA Multiple Award Schedule for Western Area Power Administration; and a $242 thousand purchase order (September 2022) for cooling tower replacement at WAPA's Desert Southwest Region office in Phoenix. Smaller work includes emergency repairs (heat exchanger and chiller emergency calls at VA facilities, typically $6K–$82K per task order), freezer compressor and condenser replacements at USDA Agricultural Research Service facilities (ranging $5.6K–$39.5K), and routine preventative maintenance call orders.

Customer concentration skews toward mid-tier federal facility-operations agencies. The top five customer agencies account for 82% of recent awards by count: the Department of Agriculture's Agricultural Research Service Pacific West Area (26 awards, $1.2 million), the Department of the Air Force Air Combat Command (25 awards, $6.6 million), the Department of Veterans Affairs Veterans Health Administration Veterans Integrated Service Network 22 (21 awards, $1.3 million), the Department of Energy's Western Area Power Administration (21 awards, $3.9 million), and the Air National Guard (5 awards, $266 thousand). By potential value, Air Combat Command and WAPA dominate (together anchoring $10.5 million of the $15.5 million portfolio), but the two rankings reveal a difference in deal structure: Air Combat Command appears to issue smaller task orders at higher volume, while WAPA and VA place larger, longer-duration awards. Centerline has served 14 distinct customer agencies over the award history in the source.

Centerline maintains 24 task orders under the GSA Multiple Award Schedule carrying $3.1 million in combined potential value, making MAS the primary vehicle for routine small-dollar call orders across HVAC and mechanical service. The vendor also holds or has held Indefinite Delivery Contracts with the Air Force (FA487715DA001, 12 task orders, $428 thousand), the VA (36C77021D0006, 5 task orders; VA77016D0002, 5 task orders), and other single-award or limited-competition IDCs. Most awards are purchase orders or delivery orders issued on an as-needed basis rather than large definitive contracts; the $408 thousand VA walk-in freezer maintenance contract and the $1.241 million WAPA HVAC contract are outliers in the portfolio.

Activity has contracted notably. The source shows seven awards in 2022, six in 2023, five in 2024, and one each in 2025 and 2026 to date. Four awards totaling $1.7 million in combined potential value carry completion dates within the next twenty-four months and face recompete. SCI-reported invoicing on federal service contracts above the $150 thousand reporting threshold totaled $1.1 million across FY2022–FY2025, with $488 thousand in FY2023 and $436 thousand in FY2024; SCI data captures less than 10% of Centerline's total federal award footprint by dollar value, reflecting the prevalence of small equipment repairs and call-order structures below the SCI threshold. The SCI dataset shows 0.6–0.8 full-time-equivalent delivery personnel across the captured records, with government-paid hourly rates ranging from $152/hr (10th percentile) to $284/hr (90th percentile), indicating a labor mix of technicians and supervisory staff. Centerline operates 100% as a prime contractor with no subcontractor footprint in recent awards; it does not subcontract to other primes.

The portfolio reflects a regional, asset-maintenance contractor profile: Centerline competes almost exclusively on total small business set-asides and commercial simplified acquisitions, delivers discrete repair and preventative maintenance work to Southwest-region federal facilities (Tucson and Phoenix primary geographies), and maintains long-standing relationships with a handful of facility-operations agencies rather than pursuing expansion into new customer segments or service lines. NAICS concentration runs toward commercial and industrial machinery repair (36 awards), HVAC contractors (35 awards), and facilities support services (32 awards). No federal grant work appears in the source.

Industrial and Commercial Air Conditioning and Refrigeration. Also replacement/retrofit/service to Chillers, Cooling Towers, Boilers. Expert piping, piping projects.