Top 97 Contractors in PSC N045: Installation of Equipment: Plumbing, Heating, and Waste Disposal Equipment, FY2024

Name: Top 97 Contractors in PSC N045: Installation of Equipment: Plumbing, Heating, and Waste Disposal Equipment, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 69% of FY2024 PSC N045 contract dollars

Contract obligations: $17,556,127 Net of deobligations, by contracts coded PSC N045
Contractors: 105 Parent companies with an obligation
Largest contractor: MLU Services, LLC $14.6 million, 24.8% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 97 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	MLU Services, LLC Top agencies DHS (Department of Homeland Security)	$14,619,883	24.8%	Rank history: #5 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	Tj&B Air Conditioning and Electric, LLC Top agencies DOT (Department of Transportation)	$10,873,811	18.5%	Rank history: not on the FY2021 list, #34 in FY2022, #9 in FY2023 and #14 in FY2025; up 7 since FY2023.
3	Contego Environmental LLC Top agencies VA (Department of Veterans Affairs)	$8,914,607	15.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
4	Timberline Construction Group, LLC Top agencies DHS (Department of Homeland Security)	$2,131,119	3.6%	Rank history: not on the FY2021 list, #8 in FY2022, not on the FY2023 list and #32 in FY2025; returned.
5	Ameritech Contracting LLC Top agencies DOI (Department of the Interior) VA (Department of Veterans Affairs)	$981,964	1.7%	Rank history: not on the FY2021–FY2023 lists and #43 in FY2025; new.
6	CMP Commercial Construction Inc Top agencies DOT (Department of Transportation)	$931,271	1.6%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
7	KEO & Associates Inc. Top agencies DOT (Department of Transportation)	$914,509	1.6%	Rank history: not on the FY2021 list, #18 in FY2022, #19 in FY2023 and not on the FY2025 list; up 12 since FY2023.
8	Mark-Vii Enterprises, Inc. Top agencies USDA (Department of Agriculture)	$577,600	1.0%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
9	QA Engineering LLC Top agencies DOI (Department of the Interior)	$474,965	0.8%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023 and not on the FY2025 list; up 43 since FY2023.
10	Reagent World Inc Top agencies DOT (Department of Transportation)	$446,258	0.8%	Rank history: #31 in FY2021, #22 in FY2022, #46 in FY2023 and not on the FY2025 list; up 36 since FY2023.
11	H.e.p. Construction, Inc. Top agencies Commerce (Department of Commerce)	$334,332	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
12	P. Engineering, PLLC Top agencies DHS (Department of Homeland Security)	$285,839	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
13	IBS L.l.c Top agencies DOT (Department of Transportation)	$249,000	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
14	Veterans Elite Inc Top agencies VA (Department of Veterans Affairs)	$248,472	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
15	Nova Facility Solutions Inc. Top agencies DOJ (Department of Justice)	$237,560	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
16	Trane U.s. Inc. Top agencies Army (Department of the Army)	$224,919	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
17	The Black Barons Group LLC Top agencies DHS (Department of Homeland Security)	$207,080	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
18	Specialty Heating Services LLC Top agencies VA (Department of Veterans Affairs)	$189,579	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
19	Vision Contracting Inc. Top agencies DOI (Department of the Interior)	$168,513	0.3%	Rank history: #57 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
20	Four Winds Mechanical HTC / AC Inc. Top agencies DHA (Defense Health Agency)	$126,105	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
21	Sterileco LLC Top agencies DHS (Department of Homeland Security)	$112,270	0.2%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2025; new.
22	Lee Mechanical Inc. Top agencies VA (Department of Veterans Affairs)	$109,556	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
23	Rico's Pump Service & Electric Motor Repair LLC Top agencies Army (Department of the Army)	$81,892	0.1%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2023 and not on the FY2025 list; up 16 since FY2023.
24	DAP Construction Management LLC Top agencies DOI (Department of the Interior)	$79,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
25	Acumen Enterprises Inc. Top agencies DOT (Department of Transportation)	$77,409	0.1%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; new.
26	Wesley B Jones Electrical Inc. Top agencies Army (Department of the Army)	$72,550	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
27	Elite Mechanical Services LLC Top agencies DOI (Department of the Interior)	$69,372	0.1%	Rank history: not on the FY2021–FY2023 lists and #93 in FY2025; new.
28	Apex Mechanical LLC Top agencies USDA (Department of Agriculture)	$68,596	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
29	Picatti Brothers Inc. Top agencies USDA (Department of Agriculture)	$67,100	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
30	Kfowler Construction LLC Top agencies DOI (Department of the Interior)	$65,450	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
31	Grainger Contracting and Services, LLC Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$64,632	0.1%	Rank history: #72 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
32	ACH Mechanical Contractors Inc. Top agencies USDA (Department of Agriculture)	$62,326	0.1%	Rank history: not on the FY2021 list, #68 in FY2022, #55 in FY2023 and not on the FY2025 list; up 23 since FY2023.
33	Kunj Construction Corporation Top agencies Navy (Department of the Navy)	$60,052	0.1%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2023 and #85 in FY2025; down 27 since FY2023.
34	Dmyles Inc. Top agencies Army (Department of the Army)	$59,488	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
35	Prime Genius Top agencies USDA (Department of Agriculture)	$55,980	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
36	Oneill Contractors Inc. Top agencies Army (Department of the Army)	$49,765	0.1%	Rank history: not on the FY2021 list, #15 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
37	OST Services, LLC Top agencies VA (Department of Veterans Affairs)	$48,500	0.1%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2025; new.
38	L.j.v. Development, LLC Top agencies DHS (Department of Homeland Security)	$42,775	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
39	Dahme Mechanical Industries Inc. Top agencies VA (Department of Veterans Affairs)	$39,710	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 62 since FY2023.
40	JK Mechanical & Electrical Contractors Inc. Top agencies USDA (Department of Agriculture)	$39,494	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
41	Rashad AC and Heating LLC Top agencies USAF (Department of the Air Force)	$38,934	0.1%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2025; new.
42	Mayointhemix LLC Top agencies DOI (Department of the Interior)	$38,350	0.1%	Rank history: not on the FY2021–FY2023 lists and #78 in FY2025; new.
43	Builder Properties Development Enterprise, LLC Top agencies USAF (Department of the Air Force)	$35,458	0.1%	Rank history: not on the FY2021–FY2023 lists and #92 in FY2025; new.
44	Total Solution LLC Top agencies USDA (Department of Agriculture)	$34,869	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
45	Parliament LLC Top agencies DOI (Department of the Interior)	$34,850	0.1%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023 and not on the FY2025 list; up 2 since FY2023.
46	Jessica E Jones Top agencies Army (Department of the Army)	$34,789	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
47	Hampden Engineering Corp Top agencies DOJ (Department of Justice)	$34,563	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
48	Guardian Construction, Inc. Top agencies DOT (Department of Transportation)	$33,809	0.1%	Rank history: not on the FY2021 list, #14 in FY2022, #15 in FY2023 and not on the FY2025 list; down 33 since FY2023.
49	Borealis Enterprises LLC Top agencies Commerce (Department of Commerce)	$32,603	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
50	Granite Fire Protection Inc. Top agencies DOI (Department of the Interior)	$30,668	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
51	One Speed Ventures LLC Top agencies DOI (Department of the Interior)	$30,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
52	Moreweal LLC Top agencies USDA (Department of Agriculture)	$29,666	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
53	Jason Ewing Top agencies USDA (Department of Agriculture)	$29,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
54	DR Hvac Inc. Top agencies DOI (Department of the Interior)	$28,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
55	IJC Corp Top agencies DHS (Department of Homeland Security)	$27,577	<0.1%	Rank history: not on the FY2021 list, #78 in FY2022, #59 in FY2023 and not on the FY2025 list; up 4 since FY2023.
56	Robert W Irvine & Sons Inc. Top agencies USAF (Department of the Air Force)	$27,517	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
57	All Services Hvac, LLC Top agencies USAF (Department of the Air Force)	$26,160	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
58	KSB Mechanical, Inc. Top agencies USDA (Department of Agriculture)	$25,382	<0.1%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023 and not on the FY2025 list; up 30 since FY2023.
59	Norris and Son Electric, Inc. Top agencies USAF (Department of the Air Force)	$25,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
60	Ibcontrols Top agencies USDA (Department of Agriculture)	$23,675	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
61	Ajce Corporation Top agencies DOI (Department of the Interior)	$21,506	<0.1%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023 and not on the FY2025 list; down 39 since FY2023.
62	Buffalo Supply Inc. Top agencies DHA (Defense Health Agency)	$19,965	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
63	Active Heating, Inc. Top agencies DOE (Department of Energy)	$19,299	<0.1%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023 and not on the FY2025 list; down 10 since FY2023.
64	C.r. Powless & Co LLC Top agencies DOI (Department of the Interior)	$19,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
65	KTE Construction, Inc. Top agencies HHS (Department of Health and Human Services)	$18,820	<0.1%	Rank history: not on the FY2021 list, #46 in FY2022, #44 in FY2023 and not on the FY2025 list; down 21 since FY2023.
66	B2 Constructors LLC Top agencies VA (Department of Veterans Affairs)	$18,121	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
67	Breeding's Plumbing & Electric, Inc. Top agencies Army (Department of the Army)	$17,865	<0.1%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2023 and not on the FY2025 list; up 10 since FY2023.
68	Jety Inc. Top agencies USDA (Department of Agriculture)	$17,694	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
69	Universal Mechanical Services LLC Top agencies USDA (Department of Agriculture)	$16,500	<0.1%	Rank history: not on the FY2021 list, #70 in FY2022, #87 in FY2023 and not on the FY2025 list; up 18 since FY2023.
70	Mechanical Service of Galesburg Inc. Top agencies DOJ (Department of Justice)	$15,594	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
71	FMS Provider LLC Top agencies DHS (Department of Homeland Security)	$15,462	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
72	Fujisogyo Co.,Ltd. Top agencies Navy (Department of the Navy)	$14,228	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
73	Coburn Contracting, L.l.c Through Coburn Contractors, LLC Top agencies VA (Department of Veterans Affairs)	$13,900	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
74	Rainwater Management Solutions, Inc. Top agencies Smithsonian (Smithsonian Institution)	$13,845	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
75	Illinois Mechanical Service & Design, Inc. Top agencies DOJ (Department of Justice)	$13,800	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
76	Building Automation Systems LLC Top agencies DOI (Department of the Interior)	$13,325	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
77	Laney'S Inc. Top agencies DOI (Department of the Interior)	$12,700	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
78	SKO Enterprises Inc. Top agencies USDA (Department of Agriculture)	$12,482	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
79	Standard Heating & Cooling, Inc. Top agencies DOJ (Department of Justice)	$11,725	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
80	Rymarh Corporation Top agencies DOI (Department of the Interior)	$10,446	<0.1%	Rank history: not on the FY2021 list, #29 in FY2022, #62 in FY2023 and not on the FY2025 list; down 18 since FY2023.
81	Peters Heating and Air Conditioning, Inc. Top agencies Commerce (Department of Commerce)	$10,259	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Brice Solutions, LLC Top agencies DOT (Department of Transportation)	$10,143	<0.1%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023 and not on the FY2025 list; down 34 since FY2023.
83	Comfort Systems USA Inc. Through Colonialwebb Contractors Company Top agencies USAF (Department of the Air Force)	$9,945	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
84	Twin Pines Construction Inc. Top agencies USDA (Department of Agriculture)	$9,500	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
85	Basinger Plumbing & Heating LLC Top agencies Army (Department of the Army)	$8,342	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
86	Cutting Edge Group, LLC Top agencies DOI (Department of the Interior)	$7,505	<0.1%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023 and not on the FY2025 list; down 22 since FY2023.
87	J3 Enterprise LLC Top agencies VA (Department of Veterans Affairs)	$7,296	<0.1%	Rank history: not on the FY2021–FY2022 lists, #37 in FY2023 and not on the FY2025 list; down 50 since FY2023.
88	Medved Global Inc Top agencies USDA (Department of Agriculture)	$7,113	<0.1%	Rank history: not on the FY2021–FY2023 lists and #82 in FY2025; new.
89	Hemco Properties, LLC Top agencies USAF (Department of the Air Force)	$5,910	<0.1%	Rank history: #8 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
90	City Air Mechanical, Inc. Top agencies DOI (Department of the Interior)	$5,645	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
91	A.t. Klemens & Son Top agencies DOI (Department of the Interior)	$5,395	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Hug Corp Top agencies USDA (Department of Agriculture)	$5,230	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
93	Woodall Plumbing Services LLC Top agencies USAF (Department of the Air Force)	$4,616	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
94	Magnolia Plumbing, Inc. Top agencies DOI (Department of the Interior)	$3,750	<0.1%	Rank history: not on the FY2021 list, #62 in FY2022, #38 in FY2023 and #45 in FY2025; down 56 since FY2023.
95	Sterile Services Co Top agencies Army (Department of the Army)	$2,622	<0.1%	Rank history: not on the FY2021 list, #52 in FY2022, #33 in FY2023 and not on the FY2025 list; down 62 since FY2023.
96	Superior Mechanical Services, Inc. Top agencies DOJ (Department of Justice)	$2,381	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
97	Katayama Shoji Inc. Top agencies USAF (Department of the Air Force)	$1,519	<0.1%	Rank history: not on the FY2021–FY2023 lists and #96 in FY2025; new.

Show 72 more

97 of 105 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 $58.8 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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.

Quick answers

Who were the top 10 PSC N045 contractors in FY2024?

1. MLU Services, LLC ($14.6M), 2. Tj&B Air Conditioning and Electric, LLC ($10.9M), 3. Contego Environmental LLC ($8.91M), 4. Timberline Construction Group, LLC ($2.13M), 5. Ameritech Contracting LLC ($982K), 6. CMP Commercial Construction Inc ($931K), 7. KEO & Associates Inc. ($915K), 8. Mark-Vii Enterprises, Inc. ($578K), 9. QA Engineering LLC ($475K), 10. Reagent World Inc ($446K).

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