Top 79 Contractors in PSC Z1NB: Maintenance of Heating and Cooling Plants, FY2023

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Nana Regional Corporation Inc. Through Jade Creek Construction LLC Top agencies DOJ (Department of Justice)	$22,721,996	34.8%	Rank history: not on the FY2021–FY2022 lists, #13 in FY2024 and #23 in FY2025; new.
2	Qcm, Inc. Top agencies WHS (DOD Washington Headquarters Service)	$9,401,104	14.4%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2024 and #3 in FY2025; unchanged since FY2022.
3	Centerpoint Energy, Inc. Through Energy Systems Group, LLC Top agencies NASA (National Aeronautics and Space Administration)	$6,386,061	9.8%	Rank history: #3 in FY2021, #3 in FY2022, #11 in FY2024 and not on the FY2025 list; unchanged since FY2022.
4	Hensel Phelps Construction Co Top agencies DOJ (Department of Justice)	$4,964,240	7.6%	Rank history: #1 in FY2021, #1 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
5	Valley Mechanical Inc. Top agencies VA (Department of Veterans Affairs)	$4,890,000	7.5%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2024 and #21 in FY2025; new.
6	Honeywell International Inc. Top agencies VA (Department of Veterans Affairs)	$2,592,824	4.0%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2024 and #51 in FY2025; new.
7	South Dade Air Conditioning and Refrigeration, Inc. Top agencies Army (Department of the Army)	$2,144,420	3.3%	Rank history: #7 in FY2021, #5 in FY2022, #8 in FY2024 and not on the FY2025 list; down 2 since FY2022.
8	Silver Lake - TMG Jv#1, LLC Top agencies DOJ (Department of Justice)	$2,077,512	3.2%	Rank history: not on the FY2021 list, #4 in FY2022, not on the FY2024 list and #62 in FY2025; down 4 since FY2022.
9	CPF LLC Top agencies USDA (Department of Agriculture)	$1,185,857	1.8%	Rank history: #13 in FY2021, #7 in FY2022, #4 in FY2024 and #16 in FY2025; down 2 since FY2022.
10	White Harvest Energy LLC Top agencies VA (Department of Veterans Affairs)	$984,508	1.5%	Rank history: not on the FY2021 list, #6 in FY2022, #17 in FY2024 and not on the FY2025 list; down 4 since FY2022.
11	Phoenix General Contractors, LLC Top agencies DHS (Department of Homeland Security)	$643,161	1.0%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2024 and not on the FY2025 list; new.
12	Brican, Inc. Top agencies VA (Department of Veterans Affairs)	$552,913	0.8%	Rank history: #4 in FY2021, #20 in FY2022 and not on the FY2024–FY2025 lists; up 8 since FY2022.
13	M & M Welding & Fabricators Inc Top agencies GSA (General Services Administration)	$500,000	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
14	Fiber Business Solutions Group Inc. Top agencies USDA (Department of Agriculture)	$389,300	0.6%	Rank history: #17 in FY2021, not on the FY2022 list, #56 in FY2024 and not on the FY2025 list; returned.
15	Ecolab Inc. Through Nalco Company LLC Top agencies DOJ (Department of Justice)	$335,843	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
16	Apc-S&S Joint Venture LLC Top agencies Navy (Department of the Navy)	$317,970	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
17	Professionals HIR LLC Top agencies GSA (General Services Administration)	$292,797	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
18	Nelcy Construction Corp Top agencies DHS (Department of Homeland Security)	$247,880	0.4%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #11 in FY2025; new.
19	Trane U.S. Inc. 2 awardees Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) DOS (Department of State)	$245,520	0.4%	Rank history: #22 in FY2021, #23 in FY2022, #26 in FY2024 and #10 in FY2025; up 4 since FY2022.
20	J Star Enterprises Inc. Top agencies USAF (Department of the Air Force)	$236,461	0.4%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2024 and not on the FY2025 list; new.
21	Siemens Aktiengesellschaft Through Siemens Industry Inc. Top agencies DOJ (Department of Justice)	$181,240	0.3%	Rank history: not on the FY2021 list, #19 in FY2022 and not on the FY2024–FY2025 lists; down 2 since FY2022.
22	Water Chemistry Inc Top agencies Navy (Department of the Navy)	$171,780	0.3%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2024 and #27 in FY2025; new.
23	Johnson Controls Industries 4 awardees, including Johnson Controls, Inc. and Johnson Controls of Puerto Rico Inc. Top agencies SSA (Social Security Administration) HHS (Department of Health and Human Services) DOS (Department of State)	$165,223	0.3%	Rank history: not on the FY2021 list, #38 in FY2022, #46 in FY2024 and not on the FY2025 list; up 15 since FY2022.
24	RJY Group LLC Top agencies VA (Department of Veterans Affairs)	$145,283	0.2%	Rank history: #27 in FY2021, #18 in FY2022, #47 in FY2024 and #71 in FY2025; down 6 since FY2022.
25	Bick Holdings Inc. Through Bick Group Inc. Top agencies DISA (Defense Information Systems Agency)	$142,361	0.2%	Rank history: #63 in FY2021, #28 in FY2022, #76 in FY2024 and not on the FY2025 list; up 3 since FY2022.
26	Mshc, Inc. 2 awardees, including Engineered Cooling Services LLC and Tolin Mechanical Systems Company, LLC Top agencies DOJ (Department of Justice) DOI (Department of the Interior)	$124,563	0.2%	Rank history: #61 in FY2021, #49 in FY2022, #83 in FY2024 and not on the FY2025 list; up 23 since FY2022.
27	Temperature Technology, Inc. Top agencies USDA (Department of Agriculture)	$120,627	0.2%	Rank history: #33 in FY2021, #37 in FY2022, #45 in FY2024 and #43 in FY2025; up 10 since FY2022.
28	J&B Hartigan, Inc. Top agencies VA (Department of Veterans Affairs)	$114,448	0.2%	Rank history: not on the FY2021–FY2022 lists, #37 in FY2024 and #36 in FY2025; new.
29	DS Designs LLC Top agencies DOI (Department of the Interior)	$105,700	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
30	Belt Built Contracting, LLC Top agencies DOJ (Department of Justice)	$100,093	0.2%	Rank history: #31 in FY2021, not on the FY2022 list, #28 in FY2024 and not on the FY2025 list; returned.
31	First Choice Solutions Inc. Through Rhoads Co. Top agencies DOI (Department of the Interior)	$98,090	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
32	B2 Constructors LLC Top agencies VA (Department of Veterans Affairs)	$92,763	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
33	Mepvet LLC Top agencies VA (Department of Veterans Affairs)	$92,641	0.1%	Rank history: #16 in FY2021, #8 in FY2022, #20 in FY2024 and not on the FY2025 list; down 25 since FY2022.
34	Carrier Singapore (Pte) Limited Top agencies DOS (Department of State)	$88,776	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
35	RM Ultimate Construction LLC Top agencies VA (Department of Veterans Affairs)	$86,579	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
36	Infinity Cooling Expert SDN BHD Top agencies DOS (Department of State)	$85,755	0.1%	Rank history: not on the FY2021 list, #31 in FY2022, #35 in FY2024 and #37 in FY2025; down 5 since FY2022.
37	R & M Government Services Inc. Top agencies VA (Department of Veterans Affairs)	$77,170	0.1%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2024 and #41 in FY2025; new.
38	Sh Mechanical Inc. Top agencies DOI (Department of the Interior)	$76,789	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
39	Building Automation Services, Inc. Top agencies DOJ (Department of Justice)	$73,855	0.1%	Rank history: #34 in FY2021, #35 in FY2022, #38 in FY2024 and not on the FY2025 list; down 4 since FY2022.
40	K.t. Service - Krio Technology Service - Societa' A Responsabilita' Limitata Top agencies DOS (Department of State)	$72,387	0.1%	Rank history: not on the FY2021 list, #21 in FY2022 and not on the FY2024–FY2025 lists; down 19 since FY2022.
41	D7, LLC Top agencies Navy (Department of the Navy)	$70,013	0.1%	Rank history: #39 in FY2021, #15 in FY2022 and not on the FY2024–FY2025 lists; down 26 since FY2022.
42	Multistack LLC Top agencies DOS (Department of State)	$60,869	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
43	Valley Furnace Inc. Top agencies DOI (Department of the Interior)	$56,551	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
44	GEC Industrial Boilers Top agencies DOS (Department of State)	$49,996	0.1%	Rank history: #44 in FY2021, #42 in FY2022, #49 in FY2024 and #45 in FY2025; down 2 since FY2022.
45	Patriot Mechanical, LLC Top agencies HHS (Department of Health and Human Services)	$49,288	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
46	Patrick's Plumbing & Heating, Inc. Top agencies DOI (Department of the Interior)	$48,922	0.1%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2024 and not on the FY2025 list; new.
47	American Engineering Corporation Top agencies OSD (Office of the Secretary of Defense)	$43,275	0.1%	Rank history: #49 in FY2021, #44 in FY2022, #50 in FY2024 and #35 in FY2025; down 3 since FY2022.
48	IAW Construction, Inc. Top agencies VA (Department of Veterans Affairs)	$43,150	0.1%	Rank history: not on the FY2021 list, #55 in FY2022 and not on the FY2024–FY2025 lists; up 7 since FY2022.
49	Four Winds Mechanical HTC / AC Inc. Top agencies VA (Department of Veterans Affairs)	$43,000	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
50	Caldaia Controls LLC Top agencies VA (Department of Veterans Affairs)	$40,030	0.1%	Rank history: not on the FY2021–FY2022 lists, #31 in FY2024 and #12 in FY2025; new.
51	Rittal North America LLC Top agencies Treasury (Department of the Treasury)	$39,409	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
52	ACE Gois LLC Top agencies DOS (Department of State)	$36,900	0.1%	Rank history: not on the FY2021–FY2022 lists, #55 in FY2024 and #47 in FY2025; new.
53	Pro-Mark Services Inc Top agencies USAF (Department of the Air Force)	$32,024	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
54	Hwsi GMBH Top agencies DOS (Department of State)	$26,911	<0.1%	Rank history: #56 in FY2021, #52 in FY2022, #59 in FY2024 and #55 in FY2025; down 2 since FY2022.
55	Integration & Control Solutions LLC Top agencies DOI (Department of the Interior)	$26,005	<0.1%	Rank history: not on the FY2021 list, #32 in FY2022 and not on the FY2024–FY2025 lists; down 23 since FY2022.
56	C.r. Hipp Construction, Inc. Top agencies DOI (Department of the Interior)	$22,212	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
57	Mechanical Business Holdings LLC Top agencies DOJ (Department of Justice)	$22,200	<0.1%	Rank history: not on the FY2021 list, #29 in FY2022, #61 in FY2024 and #56 in FY2025; down 28 since FY2022.
58	Nsp-Bch, LLC Top agencies DOI (Department of the Interior)	$21,406	<0.1%	Rank history: not on the FY2021 list, #71 in FY2022 and not on the FY2024–FY2025 lists; up 13 since FY2022.
59	Unlimited Support Services LLC Top agencies DHS (Department of Homeland Security)	$21,122	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
60	The Blackstar Companies, LLC Top agencies DHS (Department of Homeland Security)	$20,233	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
61	Berg Enterprises Inc. Top agencies DISA (Defense Information Systems Agency)	$19,490	<0.1%	Rank history: #54 in FY2021, #47 in FY2022 and not on the FY2024–FY2025 lists; down 14 since FY2022.
62	Jett's Specialty Contracting, LLC Top agencies VA (Department of Veterans Affairs)	$18,382	<0.1%	Rank history: #11 in FY2021, #51 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
63	Jewel Enterprises LLC Top agencies DOI (Department of the Interior)	$18,135	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
64	Chillco, Inc. Top agencies DHS (Department of Homeland Security)	$17,100	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
65	Carrier Rental Systems Inc 2 awardees, including Carrier (Thailand) Co Ltd and Carrier Singapore (Pte) Limited Top agencies DOS (Department of State)	$15,893	<0.1%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2024 and #67 in FY2025; new.
66	Bradley-Sciocchetti, Inc. Top agencies DHS (Department of Homeland Security)	$14,386	<0.1%	Rank history: not on the FY2021 list, #63 in FY2022, #74 in FY2024 and #69 in FY2025; down 3 since FY2022.
67	Condor Technologies, Inc. Top agencies Army (Department of the Army)	$13,889	<0.1%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2024 and #66 in FY2025; new.
68	Hugus Inc. Top agencies USAF (Department of the Air Force)	$13,750	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
69	Service First GP (Pty) Ltd Top agencies USAID (US Agency for International Development)	$11,871	<0.1%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2024 and not on the FY2025 list; new.
70	Johnson Controls Security Solutions LLC 2 awardees, including Johnson Controls Inc. Top agencies VA (Department of Veterans Affairs)	$11,518	<0.1%	Rank history: #18 in FY2021, #9 in FY2022 and not on the FY2024–FY2025 lists; down 61 since FY2022.
71	Osung Engineering Top agencies DOS (Department of State)	$11,030	<0.1%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2024 and not on the FY2025 list; new.
72	S.k.m. Systems Analysis, Inc. Top agencies Navy (Department of the Navy)	$10,541	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
73	Commercial Express Hvac LLC Top agencies USTDA (United States Trade and Development Agency)	$10,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
74	Crown Based Services LLC Top agencies DOE (Department of Energy)	$9,480	<0.1%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2024 and not on the FY2025 list; new.
75	Ranger Hvac LLC Top agencies VA (Department of Veterans Affairs)	$7,820	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
76	Fire N Ice Heating and Air Conditioning Inc. Top agencies VA (Department of Veterans Affairs)	$6,650	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
77	Casto Technical Services Inc. Top agencies DOJ (Department of Justice)	$4,796	<0.1%	Rank history: #26 in FY2021, #46 in FY2022 and not on the FY2024–FY2025 lists; down 31 since FY2022.
78	C.r. Powless & Co LLC Top agencies DOI (Department of the Interior)	$3,800	<0.1%	Rank history: not on the FY2021 list, #79 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
79	Spectrum Mechanical LLC Top agencies DHS (Department of Homeland Security)	$3,638	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

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 $65.2 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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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