Top HHS plumbing, heating, and air-conditioning contractors contractors
In the 12 months ending Oct 5, 2026, the Department of Health and Human Services obligated $46.5M in net prime contract dollars under NAICS 238220, up 119.5% from $21.2M in the preceding 12 months. 63 prime contractors received positive obligations, and 2 of them accounted for 80% of that spend.
Prime contracts funded by the Department of Health and Human Services. Latest 12 months: Oct 6, 2025 to Oct 5, 2026. Source: USAspending.gov.
Obligations by fiscal year
Net prime contract obligations by federal fiscal year (October to September).
Top HHS contractors for NAICS 238220
Ranked by positive obligations in the latest 12 months. Share is of all positive obligations in this market.
| # | Contractor | Latest 12 mo | Prior 12 mo | Share | Rank change |
|---|---|---|---|---|---|
| 1 | Chenega Enterprise Systems & Solutions, LLC | $37.4M | $0 | 74.6% | New |
| 2 | Chappelle Mechanical Services LLC | $3.2M | $2.6M | 6.3% | ▲ 2 |
| 3 | Tatco LLC | $1.4M | $2.6M | 2.9% | — |
| 4 | Olgoonik General, LLC | $1.4M | $3.0M | 2.7% | ▼ 2 |
| 5 | Reon Inc | $1.1M | $1.4M | 2.2% | — |
| 6 | General and Mechanical Services, LLC | $862K | $394K | 1.7% | ▲ 6 |
| 7 | American Testing, Inc. | $455K | $455K | 0.9% | ▲ 2 |
| 8 | The Sparrow Group Inc | $381K | $0 | 0.8% | New |
| 9 | Applied Industrial Systems LLC | $303K | $285K | 0.6% | ▲ 4 |
| 10 | Lacreek Development Corp | $293K | $151K | 0.6% | ▲ 13 |
| 11 | Cheroenhaka Nottoway Enterprises, LLC | $289K | $692K | 0.6% | ▼ 4 |
| 12 | Automated Logic Contracting Services, Inc. | $284K | $430K | 0.6% | ▼ 1 |
| 13 | 4 G Plumbing and Heating, Inc. | $250K | $530K | 0.5% | ▼ 5 |
| 14 | Mooweep LLC | $244K | $0 | 0.5% | New |
| 15 | Yearout Mechanical, LLC / dba: Welch's Boiler Service, LLC | $195K | $267K | 0.4% | — |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- Chenega Enterprise Systems & Solutions, LLC$0 → $37.4M (+$37.4M) · now #1
- Chappelle Mechanical Services LLC$2.6M → $3.2M (+$596K) · now #2
- General and Mechanical Services, LLC$394K → $862K (+$468K) · now #6
Largest declines
- Pilkington Contracting Co Inc$3.5M → −$3.3M (−$6.8M) · no latest-period obligations
- Olgoonik General, LLC$3.0M → $1.4M (−$1.7M) · now #4
- Tatco LLC$2.6M → $1.4M (−$1.2M) · now #3
New to this market
22 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| Chenega Enterprise Systems & Solutions, LLC | Sep 28, 2026 | $37.4M |
| k2 Contracting Group LLC | Sep 22, 2026 | $164K |
| Hybrid Plumbing and Boiler Specialists LLC | Apr 22, 2026 | $122K |
| Valogic BIO, LLC | Aug 7, 2026 | $66K |
| Bethel Construction LLC | Mar 13, 2026 | $60K |
| Siemens Industry Inc | Aug 20, 2026 | $55K |
| First American Federal Contracting LLC | Aug 27, 2026 | $50K |
| Chickasaw Business Solutions, LLC | Sep 29, 2026 | $45K |
Where the money comes from
Funding sub-agencies within the Department of Health and Human Services, latest 12 months. The funding organization can differ from the office that runs the requirement.
| Funding sub-agency | Latest 12 mo | Prior 12 mo | Change |
|---|---|---|---|
| Centers for Disease Control and Prevention | $37.5M | $1.3M | Up $36.3M (2875.6%) |
| National Institutes of Health | $8.2M | $10.3M | Down $2.0M (19.8%) |
| Indian Health Service | $657K | $8.9M | Down $8.3M (92.7%) |
| Office of the Assistant Secretary for Financial Resources | $64K | $0 | New |
| Office of the Assistant Secretary for Administration | $34K | $0 | New |
| Food and Drug Administration | $8K | $646K | Down $638K (98.8%) |
Potential recompetes
Large awards in this market whose current period of performance ends in the next 18 months. Treat these as research leads: options, extensions, and follow-on vehicles often change the timing.
| Award | Incumbent | Obligated | Current end |
|---|---|---|---|
| 75N99023C00048 | Olgoonik General, LLC C115298 - CUP CHILLER REPAIRS 2023-2024. CO: MARIO HENRIQUEZ COR: ELIZABETH OLUWAFEMI | $4.0M | Oct 30, 2026 |
| 75N99023C00080 | Olgoonik General, LLC C100114 - BLDG. 6 AQUATICS FACILITY PUMP UPGRADES PHASE II. CO: MARIO HENRIQUEZ COR: EARL JOHNSON | $4.2M | Dec 30, 2026 |
| 75N99026F00001 | Reon Inc THE PURPOSE OF THIS TASK ORDER IS TO ADD CR1 FUNDING FOR OPTION YEAR 2 (POP IS 1 JAN 2026 TO 31 DEC 2026) | $1.1M | Dec 31, 2026 |
Common questions
Who are the top HHS contractors for NAICS 238220?
In the latest 12 months, Chenega Enterprise Systems & Solutions, LLC ($37.4M), Chappelle Mechanical Services LLC ($3.2M), Tatco LLC ($1.4M) received the most HHS obligations for plumbing, heating, and air-conditioning contractors.
How concentrated is this market?
The eight largest primes held 92.2% of positive obligations, and Chenega Enterprise Systems & Solutions, LLC alone held 74.6%. 22 contractors won their first obligations in this market during the latest 12 months.
Are any large HHS NAICS 238220 contracts ending soon?
3 of the largest awards in this market reach their current end date in the next 18 months. The first is 75N99023C00048 (Olgoonik General, LLC, $4.0M obligated), ending Oct 30, 2026. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
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NAICS 238220 across all agencies
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$21.7MFigures are net obligations on prime contracts (award types A–D) from USAspending.gov, grouped by funding agency and the NAICS code on each award. Net obligations include deobligations and corrections, so they can differ from positive-obligation totals. See methodology.
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