Top 33 Contractors in PSC H345: Inspection and Laboratory Services (except medical/dental): Plumbing, Heating, and Waste Disposal Equipment, Aug 2025–Jul 2026
Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe
The latest 12 months. See the newest fiscal year's list: Top Contractors in PSC H345: Inspection and Laboratory Services (except medical/dental): Plumbing, Heating, and Waste Disposal Equipment, FY2025.
The top 10 won 69% of PSC H345 contract dollars from August 2025 through July 2026
Ranking facts
- Contract obligations
- $1,249,403 Net of deobligations, by contracts coded PSC H345
- Contractors
- 35 Parent companies with an obligation
- Largest contractor
- Citrine LLC $410 thousand, 27.4% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 33 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 |
Citrine LLC
|
$410,173 | ||
| 2 | $122,479 | |||
| 3 | $105,769 | |||
| 4 | $76,000 | |||
| 5 | $58,633 | |||
| 6 |
Winergy LLC
Top agencies
|
$58,499 | ||
| 7 | $58,193 | |||
| 8 | $52,066 | |||
| 9 |
Atlas Backflow Inc.
Top agencies
|
$49,590 | ||
| 10 | $45,849 | |||
| 11 | $39,120 | |||
| 12 | $35,400 | |||
| 13 | $32,399 | |||
| 14 |
Venergy Group LLC
Top agencies
|
$29,030 | ||
| 15 |
Energy Resources Corporation
Top agencies
|
$21,871 | ||
| 16 | $19,249 | |||
| 17 |
Damarc Quality Inspection Services LLC
Top agencies
|
$17,985 | ||
| 18 |
Hyko Solutions LLC
Top agencies
|
$17,300 | ||
| 19 |
Csic Solutions LLC
Top agencies
|
$15,020 | ||
| 20 |
Tekton CC, LLC
Top agencies
|
$13,008 | ||
| 21 | $10,884 | |||
| 22 | $10,282 | |||
| 23 | $10,000 | |||
| 24 | $9,924 | |||
| 25 |
Comfort Systems USA Inc.
Top agencies
|
$8,440 | ||
| 26 |
Head's Plumbing Sales & Service, Inc.
Top agencies
|
$7,786 | ||
| 27 | $7,000 | |||
| 28 | $6,300 | |||
| 29 |
Byron Gibbons
Top agencies
|
$6,045 | ||
| 30 |
Economic Alternatives Inc.
Top agencies
|
$5,718 | ||
| 31 |
Zero Medical Waste Corp.
Top agencies
|
$4,550 | ||
| 32 |
Bidziil Solutions LLC
Top agencies
|
$3,833 | ||
| 33 | $3,480 |
Show 8 more
33 of 35 contractors listed here. See the rest on GovTribe.
How this ranking works
- Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
- Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $1.5 million obligated before deobligations, so they never pass 100%.
- Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
- Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
- Rank changes compare with Aug 2024–Jul 2025. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
- Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list.
- Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.
Quick answers
Who were the top 10 PSC H345 contractors in Aug 2025–Jul 2026?
1. Citrine LLC ($410K), 2. Caldaia Controls LLC ($122K), 3. The Cleaver-Brooks Company, Inc. ($106K), 4. Trident Joint Services, LLC ($76K), 5. Wireless Network Group, Inc. ($58.6K), 6. Winergy LLC ($58.5K), 7. Insparisk, LLC ($58.2K), 8. Green and Sustainable Services, LLC ($52.1K), 9. Atlas Backflow Inc. ($49.6K), 10. Brown Point Facility Management Solutions, LLC ($45.8K).
On GovTribe
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