Duncan Mechanical Services, Inc.
San Angelo, TX
- UEI
- WNXNWDKDENK8
- CAGE
- 0Z800
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
- SAM.gov registration date
- Physical address
- 1125 Glenna St, San Angelo, TX 76901, USA
- Website
- duncanmechanicalservices.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 .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $5,671 |
| FY2025 | $422,994 |
| FY2024 | $147,289 |
| FY2023 | $13,600 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Air Force | $5,671 |
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| James Lane Mechanical | Wichita Falls, TX | 238220 Plumbing, Heating, and Air-Conditioning Contractors |
| 4T Mechanical, LLC | Bandera, TX | 238220 Plumbing, Heating, and Air-Conditioning Contractors |
| Shafer Services Plus | San Antonio, TX | 238220 Plumbing, Heating, and Air-Conditioning Contractors |
| FG Haggerty Co Inc. | Wichita Falls, TX | 238220 Plumbing, Heating, and Air-Conditioning Contractors |
| Trinity Air Conditioning, Inc. | Wichita Falls, TX | 238220 Plumbing, Heating, and Air-Conditioning Contractors |
About the company
Duncan Mechanical Services, Inc., a small business based in San Angelo, Texas, provides HVAC equipment installation, replacement, repair, and short-term leasing services to the Department of the Air Force as a prime contractor, operating exclusively under total small business set-asides. The company is a for-profit Subchapter S corporation focused on chiller and air-conditioning infrastructure at Air Force facilities, with recent award activity concentrated at Goodfellow Air Force Base in Texas.
Duncan Mechanical operates exclusively as a prime contractor across 30 federal awards spanning three decades. The company's capability portfolio centers on air-cooled chiller replacement, installation of associated chilled-water piping and isolation equipment, emergency repair of HVAC components, short-term chiller leasing, and CRAC unit replacement. Representative recent work includes a $422,994 firm fixed-price contract awarded October 14, 2026, by Air Education and Training Command (AETC) to remove and replace a 250-ton air-cooled chiller at Goodfellow Air Force Base with a 90-day performance window through January 13, 2027; a $147,289 chiller replacement at Building B222 of the same base awarded December 4, 2023; and a $15,500 short-term chiller lease awarded April 15, 2022. AETC has designated Duncan Mechanical as a key vendor within its broader chiller standardization initiative, which encompasses 1,654 units across eighty-seven Air Force installations through September 2029 and reserves 92% of program participation for small business contractors.
Customer concentration is acute. AETC accounts for 21 awards and the entire combined potential value of $1.3 million, representing 93% of Duncan Mechanical's recent awards. The General Services Administration Public Buildings Service and the Department of the Air Force account for 7 of the remaining awards. The vendor's work is primarily classified under NAICS 238220 (Plumbing, Heating, and Air-Conditioning Contractors) and splits across PSC codes for refrigeration and air-conditioning equipment maintenance, repair, and leasing.
Award activity shows volatility: six awards in 2021, three in 2022, one in 2023, then a gap until two awards in 2026. The combined dollars obligated across all awards ($1.7 million) exceed the combined potential value ($1.3 million), indicating completed invoicing beyond initial ceiling estimates. One award with ultimate completion date in the next twenty-four months carries $423 thousand in potential value and faces recompete exposure. Duncan Mechanical has maintained SAM.gov registration since at least 2002, with an initial federal award date of August 1994, and competes entirely within total small business set-aside vehicles.
Quick answers
Is Duncan Mechanical Services, Inc. registered in SAM.gov?
Yes. Duncan Mechanical Services, Inc.'s SAM.gov registration is active through August 13, 2027.
How much has Duncan Mechanical Services, Inc. received in federal contracts?
Federal contracts obligated $422,994 to Duncan Mechanical Services, Inc. in fiscal year 2025 and $589,554 in fiscal years 2023 through 2027.
How does Duncan Mechanical Services, Inc. rank among federal contractors?
Duncan Mechanical Services, Inc. ranked #33 in PSC 4120 in FY2025.
What is Duncan Mechanical Services, Inc.'s most recent federal award?
Duncan Mechanical Services, Inc.'s most recent federal contract award is Remove 250-ton air cooled chiller and provide new 250-ton trane(r) air cooled chiller with new exterior chilled water… (FA303025C0013), from Air Education and Training Command (USAF), on October 14, 2026.
On GovTribe
See Duncan Mechanical Services, Inc.'s full federal record
- Federal contract awards
- Funding analysis by agency, NAICS and set-aside
- Similar vendors