Top 41 Contractors in NAICS 423720: Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers, FY2025

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Lewis-Smith Corporation Top agencies DOJ (Department of Justice)	$217,500	13.1%	Rank history: #12 in FY2021 and not on the FY2022–FY2024 lists; returned.
2	Johnson Controls Building Automation Systems, LLC Top agencies VA (Department of Veterans Affairs)	$159,462	9.6%	Rank history: not on the FY2021–FY2023 lists and #1 in FY2024; down 1 since FY2024.
3	B & H International LLC Top agencies DOJ (Department of Justice)	$116,614	7.0%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2024; up 13 since FY2024.
4	Associated Steam Specialty Co Top agencies DOJ (Department of Justice)	$107,285	6.5%	Rank history: not on the FY2021–FY2024 lists; new.
5	Elle Logistics Company, LLC Top agencies DLA (Defense Logistics Agency)	$80,228	4.8%	Rank history: not on the FY2021–FY2024 lists; new.
6	S4 Water Sales and Service, LLC Top agencies DOS (Department of State)	$75,560	4.6%	Rank history: not on the FY2021–FY2024 lists; new.
7	Water Heater Distributors, LLC Top agencies DOJ (Department of Justice)	$68,940	4.2%	Rank history: not on the FY2021–FY2022 lists, #2 in FY2023 and #11 in FY2024; up 4 since FY2024.
8	Atlantic Valve & Supply Inc. Top agencies DHS (Department of Homeland Security)	$60,712	3.7%	Rank history: #10 in FY2021, not on the FY2022 list, #20 in FY2023 and not on the FY2024 list; returned.
9	Supplies & Services International Inc. Top agencies DOS (Department of State)	$51,549	3.1%	Rank history: not on the FY2021–FY2024 lists; new.
10	Gasparini John W Inc. Top agencies DOJ (Department of Justice)	$46,240	2.8%	Rank history: #46 in FY2021, #35 in FY2022 and not on the FY2023–FY2024 lists; returned.
11	Taft Engineering, Inc. Top agencies DOJ (Department of Justice)	$41,667	2.5%	Rank history: not on the FY2021–FY2024 lists; new.
12	Piedmont Pump and Products, Inc. Top agencies Smithsonian (Smithsonian Institution)	$39,894	2.4%	Rank history: #19 in FY2021 and not on the FY2022–FY2024 lists; returned.
13	Mecx, Inc. Top agencies DOJ (Department of Justice)	$39,440	2.4%	Rank history: not on the FY2021–FY2024 lists; new.
14	Commercial Products Corporation Top agencies DOJ (Department of Justice)	$34,342	2.1%	Rank history: not on the FY2021–FY2023 lists and #18 in FY2024; up 4 since FY2024.
15	Ferguson Enterprises LLC Top agencies DOJ (Department of Justice) National Gallery of Art	$32,063	1.9%	Rank history: #3 in FY2021, #7 in FY2022, #10 in FY2023 and #9 in FY2024; down 6 since FY2024.
16	Alaska Boiler & Burner LLC Top agencies DHS (Department of Homeland Security)	$29,051	1.8%	Rank history: not on the FY2021–FY2024 lists; new.
17	M & M Control Service Inc. Top agencies DHS (Department of Homeland Security)	$26,659	1.6%	Rank history: not on the FY2021–FY2022 lists, #44 in FY2023 and not on the FY2024 list; returned.
18	K.r. Campbell, Inc. Top agencies GSA (General Services Administration)	$25,818	1.6%	Rank history: not on the FY2021 list, #21 in FY2022 and not on the FY2023–FY2024 lists; returned.
19	F.w. Webb Company Top agencies DHS (Department of Homeland Security)	$24,000	1.4%	Rank history: not on the FY2021–FY2024 lists; new.
20	Matt Marshall & Co Top agencies DOJ (Department of Justice)	$23,805	1.4%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2024; up 3 since FY2024.
21	Atlanta Boiler & Mechanical, Inc. Top agencies DOJ (Department of Justice)	$22,541	1.4%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2024; up 12 since FY2024.
22	Venergy Group LLC Top agencies DOS (Department of State)	$21,937	1.3%	Rank history: not on the FY2021–FY2024 lists; new.
23	Carolina Water Specialties LLC Top agencies DOS (Department of State)	$19,989	1.2%	Rank history: not on the FY2021–FY2024 lists; new.
24	American Backflow Products, Company Top agencies DOJ (Department of Justice)	$19,345	1.2%	Rank history: not on the FY2021–FY2022 lists, #19 in FY2023 and not on the FY2024 list; returned.
25	R.f. Macdonald Co., LLC Top agencies DOJ (Department of Justice)	$19,000	1.1%	Rank history: #14 in FY2021, not on the FY2022–FY2023 lists and #7 in FY2024; down 18 since FY2024.
26	Wolverine Supply, Inc. Top agencies DOJ (Department of Justice)	$17,599	1.1%	Rank history: not on the FY2021–FY2024 lists; new.
27	The C.i. Thornburg Co., Inc. Top agencies DOJ (Department of Justice)	$17,422	1.1%	Rank history: not on the FY2021–FY2024 lists; new.
28	Supply House LLC Top agencies Navy (Department of the Navy)	$15,828	1.0%	Rank history: not on the FY2021–FY2024 lists; new.
29	Winsupply Crystal River FL Co. Top agencies DOJ (Department of Justice)	$14,279	0.9%	Rank history: not on the FY2021–FY2024 lists; new.
30	Horwitz LLC Top agencies DHS (Department of Homeland Security)	$14,225	0.9%	Rank history: not on the FY2021–FY2024 lists; new.
31	The Electric Heater Co Top agencies DOJ (Department of Justice)	$13,400	0.8%	Rank history: not on the FY2021–FY2024 lists; new.
32	Needful Essentials L.L.C. Top agencies DOS (Department of State)	$13,000	0.8%	Rank history: not on the FY2021–FY2024 lists; new.
33	Realsource International LLC Top agencies DOS (Department of State)	$12,108	0.7%	Rank history: not on the FY2021–FY2024 lists; new.
34	Quality Plumbing Parts, Inc. Top agencies DOJ (Department of Justice)	$11,433	0.7%	Rank history: not on the FY2021–FY2024 lists; new.
35	Advanced Thermal Solutions LLC Top agencies Smithsonian (Smithsonian Institution)	$11,084	0.7%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2024; unchanged since FY2024.
36	B. David Co Inc. Top agencies DOS (Department of State)	$10,442	0.6%	Rank history: not on the FY2021–FY2024 lists; new.
37	Badger Truck and Automotive Group, Inc. Top agencies DLA (Defense Logistics Agency)	$8,986	0.5%	Rank history: not on the FY2021 list, #37 in FY2022, not on the FY2023 list and #32 in FY2024; down 5 since FY2024.
38	W.w. Grainger, Inc. Top agencies DOS (Department of State)	$4,065	0.2%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2023 and not on the FY2024 list; returned.
39	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$3,908	0.2%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023 and not on the FY2024 list; returned.
40	Boiler Supply Company Inc Top agencies DOJ (Department of Justice)	$3,100	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
41	Total Water Treatment Systems, Inc. Top agencies DOJ (Department of Justice)	$2,209	0.1%	Rank history: #51 in FY2021, #41 in FY2022, not on the FY2023 list and #37 in FY2024; down 4 since FY2024.

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 $1.66 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. 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.
• Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2024. "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. The step from FY2024 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

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