Mechanical Business Holdings LLC
Plainfield, IL Kirwan Mechanical Service
- UEI
- RLSNRHSSCAN9
- CAGE
- 91WS7
- Primary NAICS
- 561210 Facilities Support Services
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- NAICS codes registered in SAM.gov
-
- 561210 Facilities Support Services Primary
- 221210 Natural Gas Distribution
- 221310 Water Supply and Irrigation Systems
- 221330 Steam and Air-Conditioning Supply
- 238210 Electrical Contractors and Other Wiring Installation Contractors
- 238220 Plumbing, Heating, and Air-Conditioning Contractors
- 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers
- 423690 Other Electronic Parts and Equipment Merchant Wholesalers
Show all
- 541330 Engineering Services
- 541350 Building Inspection Services
- 541990 All Other Professional, Scientific, and Technical Services
- 811210 Electronic and Precision Equipment Repair and Maintenance
- 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
- 811412 Appliance Repair and Maintenance
- SAM.gov registration date
- Physical address
- 23840 W Industrial Dr S, Plainfield, IL 60585, USA
- Website
- kirwanmechanicalservice.com
- Industry
-
- Industrials
- Capital Goods
- Construction & Engineering
- SIC code
- 76 Miscellaneous Repair Services
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Recent federal awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| Radio room a/c | Metropolitan Correctional Center Chicago | $32,520 | |
| Contracted electrician | Metropolitan Correctional Center Chicago | $17,603 | |
| Repair glycol loop exchanger | Metropolitan Correctional Center Chicago | $218,780 | |
| BAS service QTR 4 2026 | Metropolitan Correctional Center Chicago | $6,690 | |
| BAS service QTR 3 2026 | Metropolitan Correctional Center Chicago | $6,690 |
About Mechanical Business Holdings LLC
Mechanical Business Holdings LLC Kirwan Mechanical Service Division operates as a woman-owned small disadvantaged business providing building automation system (BAS) maintenance, repair services, and specialized facility infrastructure support to the U.S. Bureau of Prisons as a prime contractor exclusively in full-and-open competition (no set-asides currently active, though prior awards carried Total Small Business designations).
The vendor is a limited liability company headquartered in Plainfield, Illinois, self-certified as a small disadvantaged business and registered as both woman-owned small business and woman-owned business. Work centers on NAICS 571330 (Facilities Support Services) and PSC codes for maintenance of heating and cooling plants, with secondary capability in plumbing, HVAC contracting, and water/sewer line construction. The vendor's federal footprint is highly concentrated: 17 of 18 awards ($341 thousand of $348 thousand combined potential value) flow from the Department of Justice Bureau of Prisons Metropolitan Correctional Center Chicago, with one additional award ($7 thousand) from the BOP North Central Regional Office. This concentration reflects an exclusive service relationship with the MCC Chicago facility spanning since at least 2022.
Recent representative work includes a $146.5 thousand definitive contract awarded October 31, 2025, for sewer line replacement (75 linear feet of 8-inch clay pipe replacement with heavy cast iron, including excavation, shoring, and landscape restoration) set aside for Total Small Business; quarterly BAS maintenance purchase orders recurring at $6.69 thousand per quarter throughout 2024, 2025, and 2026; a $74.5 thousand equipment supply order (September 2022) for an industrial mixing center (Model IMC80); and a $13.37 thousand order for bladder tank and thermal protection valve work (September 2022). Supporting service scope spans industrial mixing centers, bladder tanks, technical valves, pressure valve maintenance, and facility equipment supply and installation.
Activity has been steady but modest: five awards in 2022, two in 2023, three in 2024, five in 2025, and three year-to-date in 2026. Total combined potential value across all 18 prime awards is $348 thousand, with 100 percent obligated. One award ($7 thousand) carries completion within the next twenty-four months and represents the only recompete exposure in the near term. The vendor operates exclusively as a prime contractor with no subcontract footprint in the source data.
Quick answers
What is Mechanical Business Holdings LLC's UEI?
Mechanical Business Holdings LLC's Unique Entity ID (UEI) in SAM.gov is RLSNRHSSCAN9.
What is Mechanical Business Holdings LLC's CAGE code?
Mechanical Business Holdings LLC's CAGE code is 91WS7.
What is Mechanical Business Holdings LLC's primary NAICS code?
Mechanical Business Holdings LLC's primary NAICS code is 561210 (Facilities Support Services).
Where is Mechanical Business Holdings LLC located?
Mechanical Business Holdings LLC's physical address in SAM.gov is 23840 W Industrial Dr S, Plainfield, IL 60585, USA.
Is Mechanical Business Holdings LLC registered in SAM.gov?
Yes. Mechanical Business Holdings LLC's SAM.gov registration is active through September 8, 2027.
What is Mechanical Business Holdings LLC's most recent federal award?
Mechanical Business Holdings LLC's most recent federal contract award is Radio room a/c (15B40126P00000098), from Metropolitan Correctional Center Chicago, on October 19, 2026.
On GovTribe
See Mechanical Business Holdings LLC's full federal record
- Federal contract awards
- Funding analysis by agency, NAICS and set-aside
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