Guardian Systems LLC
Portsmouth, VA Doing business as Guardian Energy Systems
- UEI
- FLT5LFGMM741
- CAGE
- 3TRW0
- Primary NAICS
- 541330 Engineering Services
- SAM.gov registration
- Active through
Company facts
- SBA certifications
-
Veteran-Owned Small Business– · EndedService Disabled Veteran-Owned Small Business– · Ended
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- NAICS codes registered in SAM.gov
-
- 541330 Engineering Services Primary
- 238210 Electrical Contractors and Other Wiring Installation Contractors
- 332994 Small Arms, Ordnance, and Ordnance Accessories Manufacturing
- 333111 Farm Machinery and Equipment Manufacturing
- 333618 Other Engine Equipment Manufacturing
- 334111 Electronic Computer Manufacturing
- 334419 Other Electronic Component Manufacturing
- 335312 Motor and Generator Manufacturing
Show all
- 336611 Ship Building and Repairing
- 532412 Construction, Mining, and Forestry Machinery and Equipment Rental and Leasing
- 532490 Other Commercial and Industrial Machinery and Equipment Rental and Leasing
- 541490 Other Specialized Design Services
- 541511 Custom Computer Programming Services
- 541611 Administrative Management and General Management Consulting Services
- 561110 Office Administrative Services
- 611512 Flight Training
- SAM.gov registration date
- Physical address
- 3050 High St g, Portsmouth, VA 23707, USA
- Website
- guardiansystems.us
- Industry
-
- Information Technology
- Software & Services
- Internet Software & Services
- SIC code
- 73 Business 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 |
|---|---|---|---|
| Preventive maintenance and repairs for four (4) CAT (caterpillar) C32 1000 KW (60 HZ) diesel generators. | National Oceanic and Atmospheric Administration | $11,155 | |
| Open, inspect, reapir cylinder assy. | Coast Guard | $54,499 | |
| Ssdg long block | Coast Guard | $62,538 | |
| Open, inspect, repair governors | Coast Guard | $41,152 | |
| 3 20R-9122 CAT reman water pump | Coast Guard | $13,499 |
About Guardian Systems LLC
Guardian Systems LLC, doing business as Guardian Energy Systems, supplies Caterpillar diesel engine components, overhaul kits, generator parts, and ship service diesel generator maintenance services to federal maritime and defense agencies as a prime contractor on 100% small business set-aside purchase orders. The vendor is a service-disabled veteran-owned small business (SDVOSB) and veteran-owned small business (VOSB) based in Suffolk, Virginia, with SBA certifications expiring June 29, 2026.
Guardian's federal footprint concentrates on maritime customer agencies with heavy reliance on the U.S. Coast Guard. The top five customers by award count account for 84% of recent prime awards, with the Coast Guard dominating the portfolio (45 awards, $3.7 million combined potential value), followed by Naval Sea Systems Command (25 awards, $2.2 million), the National Oceanic and Atmospheric Administration (14 awards, $607 thousand), the U.S. Army Corps of Engineers (5 awards, $826 thousand), and the Interior Department's Bureau of Reclamation (3 awards, $455 thousand). The two rankings track closely — the Coast Guard and Navy anchors both volume and dollars — with the Coast Guard representing approximately 35% of combined potential value across the vendor's prime portfolio. Guardian also serves the Air Force, the Department of Veterans Affairs, the State Department, and other defense and civilian agencies at lower volume.
Guardian's capability portfolio centers on original equipment manufacturer Caterpillar diesel engine components and maintenance. Representative work includes a $697,225 firm fixed-price purchase order from Naval Sea Systems Command (November 2024) for ship service diesel generator parts for USS New York; a $419,839 USACE Memphis District contract (May 2024) for repair of two Caterpillar dozers; a $253,421 Coast Guard order (May 2026) for a Caterpillar D-398 engine overhaul kit and crankshaft line bore inspection services for USCGC Bear; and multiple contracts from NOAA for engine repairs and parts on oceanographic research vessels including the Ferdinand Hassler, Okeanos Explorer, and Bell M. Shimada. Guardian also supplied a $758,985 900-kilowatt portable diesel generator to the VA in June 2025 and $338,832 in dozer engine reconditioning to USACE in January 2024. Work spans ship service diesel generator maintenance, long block kits, fuel injector assemblies, crankshaft inspections, aftercooler replacements, and specialized Caterpillar parts distribution. The vendor holds Caterpillar Authorized Parts & Service Center credentials and fields certified technicians for load testing, alignment, and on-vessel overhaul work.
Guardian operates predominantly on small business set-asides. The portfolio splits between total small business set-asides (the vast majority of awards) and service-disabled veteran-owned small business set-asides on a smaller subset. A single award in June 2025 carried no set-aside designation. Purchase orders are the primary contract type, with occasional firm fixed-price agreements for larger overhaul or equipment procurement efforts.
Award volume has remained steady over the past five years (21 to 22 awards annually in 2022–2024), declining to 15 in 2025 and 8 year-to-date in 2026. Four awards (combined potential value $321 thousand) reach ultimate completion within the next twenty-four months and face recompete exposure. The vendor has recorded 110 total prime awards since 2005, with combined obligated value of $10.6 million across the source data window. Guardian holds a single SeaPort-e task order vehicle position. The vendor does not carry a subcontractor footprint; all work is delivered as prime contractor.
Primary NAICS categories reflect engine and marine equipment focus: Other Engine Equipment Manufacturing (41 awards), Ship Building and Repairing (27 awards), and Commercial and Industrial Machinery Repair and Maintenance (10 awards). Top PSC codes align with Diesel Engines and Components (23 awards) and Maintenance/Repair/Rebuild of Ship and Marine Equipment (20 awards).
Contract vehicles
SBA capabilities narrative
We specialize in bringing unique/unknown technologies and capabilities to the Federal marketplace- specifically: Photogrammetry drone software, remote training/remote support smartphone systems, sUAS and CUAS manufacturing support, CAT Support and Systems
Quick answers
What is Guardian Systems LLC's UEI?
Guardian Systems LLC's Unique Entity ID (UEI) in SAM.gov is FLT5LFGMM741.
What is Guardian Systems LLC's CAGE code?
Guardian Systems LLC's CAGE code is 3TRW0.
What is Guardian Systems LLC's primary NAICS code?
Guardian Systems LLC's primary NAICS code is 541330 (Engineering Services).
Where is Guardian Systems LLC located?
Guardian Systems LLC's physical address in SAM.gov is 3050 High St g, Portsmouth, VA 23707, USA.
Is Guardian Systems LLC registered in SAM.gov?
Yes. Guardian Systems LLC's SAM.gov registration is active through January 27, 2027.
Which contract vehicles does Guardian Systems LLC hold?
Guardian Systems LLC holds a place on 1 federal contract vehicle: SeaPort-e.
What is Guardian Systems LLC's most recent federal award?
Guardian Systems LLC's most recent federal contract award is Preventive maintenance and repairs for four (4) CAT (caterpillar) C32 1000 KW (60 HZ) diesel generators (1332KP26P0039), from National Oceanic and Atmospheric Administration, on September 25, 2026.
On GovTribe
See Guardian Systems LLC's full federal record
- Federal contract awards
- IDV awards
- Contract vehicles
- Funding analysis by agency, NAICS and set-aside
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