Top 100 Contractors in PSC J041: Maintenance, Repair and Rebuilding of Equipment: Refrigeration, Air Conditioning, and Air Circulating Equipment, FY2021

Name: Top 100 Contractors in PSC J041: Maintenance, Repair and Rebuilding of Equipment: Refrigeration, Air Conditioning, and Air Circulating Equipment, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 33% of FY2021 PSC J041 contract dollars

Contract obligations: $200,742,056 Net of deobligations, by contracts coded PSC J041
Contractors: 720 Parent companies with an obligation
Largest contractor: Johnson Controls Security Solutions LLC $13.5 million, 6.5% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Johnson Controls Security Solutions LLC 15 awardees, including Johnson Controls, Inc., Johnson Controls Building Automation Systems, LLC and Johnson Controls, K.K. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$13,470,318	6.5%	Rank history: #1 in FY2022, #20 in FY2023, #53 in FY2024 and #61 in FY2025; unchanged since FY2020.
2	Centerpoint Energy, Inc. Through Energy Systems Group, LLC Top agencies Army (Department of the Army)	$8,651,809	4.1%	Rank history: #6 in FY2022, #13 in FY2023, #83 in FY2024 and not on the FY2025 list; unchanged since FY2020.
3	American Engineering Corporation Top agencies DODEA (Department of Defense Education Activity) Army (Department of the Army) Navy (Department of the Navy)	$8,395,834	4.0%	Rank history: #2 in FY2022, #2 in FY2023, #1 in FY2024 and #20 in FY2025; up 2 since FY2020.
4	Native Energy & Technology Inc. Top agencies DHS (Department of Homeland Security) GSA (General Services Administration)	$7,540,513	3.6%	Rank history: #5 in FY2022, #10 in FY2023, #5 in FY2024 and #6 in FY2025; up 11 since FY2020.
5	UD Contracting Inc. Top agencies Army (Department of the Army)	$6,923,583	3.3%	Rank history: #3 in FY2022, #4 in FY2023, #2 in FY2024 and not on the FY2025 list; down 1 since FY2020.
6	Cherokee Nation Environmental Solutions, L.L.C. Top agencies Treasury (Department of the Treasury)	$5,157,725	2.5%	Rank history: not on the FY2022–FY2025 lists; up 85 since FY2020.
7	Argus CJW JV 3 LLC Top agencies DLA (Defense Logistics Agency)	$4,892,281	2.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
8	Mechanical Resources Incorporated Top agencies Navy (Department of the Navy)	$4,806,072	2.3%	Rank history: #4 in FY2022, not on the FY2023 list, #6 in FY2024 and #7 in FY2025; down 2 since FY2020.
9	Dawson Solutions, Inc. Top agencies Navy (Department of the Navy)	$4,212,863	2.0%	Rank history: #7 in FY2022 and not on the FY2023–FY2025 lists; up 1 since FY2020.
10	TGW Landscaping & Contracting, Inc. Top agencies Army (Department of the Army)	$4,063,143	1.9%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
11	Four Tribes Enterprises, LLC Top agencies USAF (Department of the Air Force)	$3,933,900	1.9%	Rank history: #9 in FY2022, #12 in FY2023, #14 in FY2024 and #18 in FY2025; down 2 since FY2020.
12	Trane U.S. Inc. 2 awardees, including Trane Technologies Peru S.a.c. Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) USAF (Department of the Air Force)	$3,477,634	1.7%	Rank history: #19 in FY2022, #9 in FY2023, #10 in FY2024 and #5 in FY2025; up 27 since FY2020.
13	Accord Federal Services, LLC Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$3,213,994	1.5%	Rank history: #27 in FY2022, not on the FY2023 list, #24 in FY2024 and #36 in FY2025; down 2 since FY2020.
14	KBR Diego Garcia, LLC Top agencies Navy (Department of the Navy)	$3,069,403	1.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
15	The Ryan Group Inc Through Ryan & Associates, Inc. Top agencies Army (Department of the Army)	$2,936,000	1.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
16	Siemens Aktiengesellschaft 2 awardees, including Siemens Industry Inc. and Siemens Government Technologies Inc. Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) USDA (Department of Agriculture)	$2,674,666	1.3%	Rank history: #12 in FY2022, #32 in FY2023, #44 in FY2024 and not on the FY2025 list; unchanged since FY2020.
17	Core Mechanical, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) Army (Department of the Army)	$2,627,260	1.3%	Rank history: #20 in FY2022, #66 in FY2023 and not on the FY2024–FY2025 lists; up 51 since FY2020.
18	LB & B Associates Inc. Top agencies GSA (General Services Administration) USDA (Department of Agriculture) VA (Department of Veterans Affairs)	$2,502,000	1.2%	Rank history: #15 in FY2022 and not on the FY2023–FY2025 lists; down 11 since FY2020.
19	Full Circle ICC JV LLC Top agencies DLA (Defense Logistics Agency)	$2,491,182	1.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
20	Four Seasons Environmental Inc. Top agencies DLA (Defense Logistics Agency)	$2,453,045	1.2%	Rank history: #25 in FY2022, #35 in FY2023, #30 in FY2024 and #33 in FY2025; up 20 since FY2020.
21	Cimmaron Electric Inc. Top agencies GSA (General Services Administration) DOJ (Department of Justice) HHS (Department of Health and Human Services)	$2,263,293	1.1%	Rank history: not on the FY2022–FY2025 lists; down 8 since FY2020.
22	Fortis Industries LLC Top agencies DMEA (Defense Microelectronics Activity)	$2,241,533	1.1%	Rank history: #31 in FY2022 and not on the FY2023–FY2025 lists; up 22 since FY2020.
23	Control Technology & Solutions L.L.C. Top agencies Commerce (Department of Commerce)	$2,054,289	1.0%	Rank history: not on the FY2022 list, #49 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
24	Siege Enterprises LLC Top agencies GSA (General Services Administration)	$1,977,869	0.9%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
25	Multi Air Services Engineers, Corp 2 awardees Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) GSA (General Services Administration)	$1,885,047	0.9%	Rank history: #42 in FY2022, #51 in FY2023, #66 in FY2024 and not on the FY2025 list; down 5 since FY2020.
26	The Brewer-Garrett Company Top agencies GSA (General Services Administration) DFAS (Defense Finance and Accounting Service) DOL (Department of Labor)	$1,879,720	0.9%	Rank history: #43 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
27	TL Services, Inc. Top agencies VA (Department of Veterans Affairs)	$1,854,139	0.9%	Rank history: #30 in FY2022, #41 in FY2023, #60 in FY2024 and #49 in FY2025; down 10 since FY2020.
28	Iron Sword Enterprises, LLC Top agencies VA (Department of Veterans Affairs)	$1,662,600	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
29	K'oyitl'ots'ina, Limited 2 awardees, including Brooks Range Contract Services, Inc. and Kcorp Support Services, Inc. Top agencies Treasury (Department of the Treasury) GSA (General Services Administration)	$1,610,201	0.8%	Rank history: not on the FY2022–FY2025 lists; up 67 since FY2020.
30	Bhate Environmental Associates, Inc. Top agencies USAF (Department of the Air Force)	$1,582,936	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
31	OCS Construction Services Inc. Top agencies DHS (Department of Homeland Security)	$1,482,705	0.7%	Rank history: not on the FY2022 list, #92 in FY2023 and not on the FY2024–FY2025 lists; up 29 since FY2020.
32	Integriward, LLC Top agencies DHS (Department of Homeland Security)	$1,405,331	0.7%	Rank history: #14 in FY2022 and not on the FY2023–FY2025 lists; down 8 since FY2020.
33	KJS Support Services Joint Venture LLC Top agencies Navy (Department of the Navy)	$1,393,004	0.7%	Rank history: not on the FY2022–FY2025 lists; up 28 since FY2020.
34	Walter Mechanical Services Inc. Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$1,373,834	0.7%	Rank history: #82 in FY2022 and not on the FY2023–FY2025 lists; down 13 since FY2020.
35	Mountain Point, LLC Top agencies DHS (Department of Homeland Security)	$1,324,894	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
36	Magadia Consulting Inc. Top agencies Army (Department of the Army)	$1,318,468	0.6%	Rank history: #29 in FY2022, #50 in FY2023, #54 in FY2024 and not on the FY2025 list; up 109 since FY2020.
37	Kaser Mechanical LLC Top agencies USAF (Department of the Air Force)	$1,311,706	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
38	Boonerang Consulting LLC Top agencies HHS (Department of Health and Human Services)	$1,307,388	0.6%	Rank history: #83 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
39	South Dade Air Conditioning & Refrigeration Inc. Top agencies GSA (General Services Administration) EPA (Environmental Protection Agency)	$1,302,160	0.6%	Rank history: #34 in FY2022, #52 in FY2023 and not on the FY2024–FY2025 lists; up 41 since FY2020.
40	RJY Group LLC Top agencies VA (Department of Veterans Affairs)	$1,261,170	0.6%	Rank history: #11 in FY2022, #15 in FY2023, #11 in FY2024 and #16 in FY2025; down 17 since FY2020.
41	Frazier Engineering, Inc. Top agencies Navy (Department of the Navy)	$1,227,794	0.6%	Rank history: #69 in FY2022 and not on the FY2023–FY2025 lists; up 93 since FY2020.
42	Goodwill Industries of San Antonio Contract Services Top agencies USAF (Department of the Air Force)	$1,214,832	0.6%	Rank history: #44 in FY2022, #56 in FY2023, #62 in FY2024 and #54 in FY2025; up 13 since FY2020.
43	Brothers Mechanical Services LLC Top agencies DECA (Defense Commissary Agency) DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$1,137,936	0.5%	Rank history: #8 in FY2022, not on the FY2023 list, #42 in FY2024 and #65 in FY2025; down 13 since FY2020.
44	Dawn Incorporated Top agencies USAF (Department of the Air Force)	$1,110,966	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
45	Unique Technical Solutions Inc. Top agencies USAF (Department of the Air Force)	$1,094,200	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
46	J&B Hartigan, Inc. Top agencies VA (Department of Veterans Affairs)	$1,087,935	0.5%	Rank history: #56 in FY2022, #53 in FY2023, #41 in FY2024 and #44 in FY2025; down 11 since FY2020.
47	General Mechanical Corporation Top agencies USAF (Department of the Air Force)	$1,074,701	0.5%	Rank history: not on the FY2022 list, #99 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
48	Orcom, A Division of Ortega Companies, Inc. Top agencies USAF (Department of the Air Force)	$982,748	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
49	Clayton Co Consultants LLC Top agencies Army (Department of the Army)	$955,443	0.5%	Rank history: #90 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
50	Kriotec Kaelte- UND Klimatechnik GMBH Top agencies Army (Department of the Army)	$930,226	0.4%	Rank history: #46 in FY2022, #67 in FY2023 and not on the FY2024–FY2025 lists; up 33 since FY2020.
51	Reliable Air Conditioning Inc. Top agencies DHS (Department of Homeland Security)	$865,811	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
52	Asi-Brymak JV Top agencies DFAS (Defense Finance and Accounting Service)	$846,974	0.4%	Rank history: #60 in FY2022, #74 in FY2023, #69 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
53	Hanjin Heavy Industries & Construction Holdings Co. Ltd. Through Korea Engineering Consultants Corporation Top agencies USAF (Department of the Air Force)	$837,876	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
54	Semper TEK Inc. Top agencies USAF (Department of the Air Force)	$819,497	0.4%	Rank history: #18 in FY2022 and not on the FY2023–FY2025 lists; up 27 since FY2020.
55	Radice Enterprises, LLC Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs)	$780,012	0.4%	Rank history: #67 in FY2022, #90 in FY2023, #68 in FY2024 and not on the FY2025 list; up 81 since FY2020.
56	Water Treatment Services Inc. Top agencies VA (Department of Veterans Affairs)	$741,896	0.4%	Rank history: #61 in FY2022, #71 in FY2023, #80 in FY2024 and #69 in FY2025; down 7 since FY2020.
57	AJ Daewon Co.,Ltd. Top agencies USAF (Department of the Air Force)	$728,021	0.3%	Rank history: #71 in FY2022 and not on the FY2023–FY2025 lists; down 25 since FY2020.
58	Professionals HIR LLC Top agencies Navy (Department of the Navy)	$710,722	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
59	Water Chemistry Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$693,323	0.3%	Rank history: not on the FY2022–FY2025 lists; up 247 since FY2020.
60	Snodgrass Contracting LLC Top agencies USDA (Department of Agriculture)	$668,492	0.3%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
61	Ameritech Contracting LLC Top agencies Navy (Department of the Navy)	$662,956	0.3%	Rank history: not on the FY2022–FY2025 lists; up 9 since FY2020.
62	HD Inc. Top agencies USDA (Department of Agriculture)	$648,033	0.3%	Rank history: not on the FY2022–FY2025 lists; up 26 since FY2020.
63	Choice Sheetmetal LLC Top agencies Army (Department of the Army)	$635,531	0.3%	Rank history: #58 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
64	Refcon Services Inc. Top agencies Navy (Department of the Navy)	$610,746	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
65	Reagent World, Inc. Top agencies Commerce (Department of Commerce) DOI (Department of the Interior) DHS (Department of Homeland Security)	$590,378	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
66	General and Mechanical Services, LLC Top agencies DMA (Defense Media Activity) USAF (Department of the Air Force) Treasury (Department of the Treasury)	$568,665	0.3%	Rank history: not on the FY2022–FY2025 lists; down 20 since FY2020.
67	DAE Sung LLC Top agencies GSA (General Services Administration)	$568,000	0.3%	Rank history: #76 in FY2022, #34 in FY2023, #28 in FY2024 and #27 in FY2025; new, not ranked in FY2020.
68	Advancia Ahtna JV, LLC Top agencies Commerce (Department of Commerce)	$559,936	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
69	Isonmase, LLC Top agencies VA (Department of Veterans Affairs)	$558,304	0.3%	Rank history: #92 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
70	Suntech Mechanical, Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$556,909	0.3%	Rank history: not on the FY2022–FY2025 lists; up 91 since FY2020.
71	Waibel Energy Systems, Inc. Top agencies USAF (Department of the Air Force)	$554,729	0.3%	Rank history: not on the FY2022–FY2025 lists; up 5 since FY2020.
72	Isonic Corp Top agencies VA (Department of Veterans Affairs)	$530,217	0.3%	Rank history: #89 in FY2022 and not on the FY2023–FY2025 lists; up 55 since FY2020.
73	Brymak & Associates, Inc. Top agencies DFAS (Defense Finance and Accounting Service) Navy (Department of the Navy) Army (Department of the Army)	$529,382	0.3%	Rank history: not on the FY2022–FY2025 lists; down 48 since FY2020.
74	Wilson 5 Service Company, Inc. Top agencies GSA (General Services Administration)	$527,511	0.3%	Rank history: #84 in FY2022 and not on the FY2023–FY2025 lists; down 8 since FY2020.
75	Energy Management and Control Services Inc. Top agencies Navy (Department of the Navy)	$515,996	0.2%	Rank history: not on the FY2022–FY2025 lists; up 100 since FY2020.
76	Time Led Development, LLC Top agencies USAF (Department of the Air Force)	$492,770	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
77	Precision Mechanical Services, LLC Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior)	$479,607	0.2%	Rank history: #95 in FY2022 and not on the FY2023–FY2025 lists; up 414 since FY2020.
78	Satellite Services Inc. Top agencies GSA (General Services Administration) Navy (Department of the Navy)	$457,091	0.2%	Rank history: #39 in FY2022, #42 in FY2023, #50 in FY2024 and #32 in FY2025; new, not ranked in FY2020.
79	Daikin Applied Americas Inc Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture) DOJ (Department of Justice)	$439,274	0.2%	Rank history: not on the FY2022–FY2025 lists; down 16 since FY2020.
80	Noresco LLC Through Carrier Corporation Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$435,237	0.2%	Rank history: #49 in FY2022 and not on the FY2023–FY2025 lists; up 253 since FY2020.
81	K2 Contracting Group, LLC Top agencies DOI (Department of the Interior)	$431,862	0.2%	Rank history: not on the FY2022–FY2025 lists; up 68 since FY2020.
82	American Chiller Service, Inc. Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs)	$418,427	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
83	Mark-Vii Enterprises, Inc. Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$414,290	0.2%	Rank history: #22 in FY2022, #44 in FY2023, #57 in FY2024 and #89 in FY2025; new, not ranked in FY2020.
84	Schneeberger, Sandra P Top agencies VA (Department of Veterans Affairs)	$401,408	0.2%	Rank history: not on the FY2022–FY2025 lists; up 5 since FY2020.
85	Veterans Elite Inc. Top agencies VA (Department of Veterans Affairs)	$389,853	0.2%	Rank history: #33 in FY2022 and not on the FY2023–FY2025 lists; down 6 since FY2020.
86	Gearhart Construction Services LLC Top agencies DOI (Department of the Interior)	$381,149	0.2%	Rank history: #47 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
87	Siemens Industry Inc. Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$377,057	0.2%	Rank history: not on the FY2022–FY2023 lists, #13 in FY2024 and #12 in FY2025; up 22 since FY2020.
88	Brown Point Facility Management Solutions, LLC Top agencies DISA (Defense Information Systems Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$367,317	0.2%	Rank history: #87 in FY2022, #24 in FY2023, #19 in FY2024 and #26 in FY2025; down 61 since FY2020.
89	R A Walton & Co Inc. Top agencies Army (Department of the Army)	$366,500	0.2%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; up 3 since FY2020.
90	Elitaire LLC Top agencies USAF (Department of the Air Force)	$366,467	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
91	Rees Scientific Corporation Top agencies VA (Department of Veterans Affairs)	$365,821	0.2%	Rank history: not on the FY2022–FY2025 lists; up 296 since FY2020.
92	CM3 Building Solutions Inc. Top agencies VA (Department of Veterans Affairs)	$355,512	0.2%	Rank history: not on the FY2022 list, #100 in FY2023 and not on the FY2024–FY2025 lists; up 46 since FY2020.
93	Flatwater Solutions Company Top agencies USAF (Department of the Air Force)	$352,708	0.2%	Rank history: not on the FY2022–FY2025 lists; down 15 since FY2020.
94	Team Consulting Inc. Top agencies GSA (General Services Administration)	$350,901	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	Union Station Venture, Ltd. Through Jones Lang Lasalle Americas, Inc. Top agencies GSA (General Services Administration) AOUSC (Administrative Office of the U.S. Courts)	$349,963	0.2%	Rank history: not on the FY2022–FY2025 lists; down 42 since FY2020.
96	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) USAF (Department of the Air Force)	$349,412	0.2%	Rank history: not on the FY2022–FY2025 lists; up 90 since FY2020.
97	Global Service Titan LLC Top agencies DOS (Department of State)	$343,675	0.2%	Rank history: not on the FY2022–FY2025 lists; up 28 since FY2020.
98	Reon Inc. Top agencies Treasury (Department of the Treasury)	$339,858	0.2%	Rank history: #64 in FY2022, #72 in FY2023, #75 in FY2024 and #63 in FY2025; up 4 since FY2020.
99	EWA Direction Inc. Top agencies VA (Department of Veterans Affairs)	$321,965	0.2%	Rank history: #81 in FY2022, not on the FY2023 list, #98 in FY2024 and #62 in FY2025; unchanged since FY2020.
100	Urban Services Group Inc. Top agencies GSA (General Services Administration) Treasury (Department of the Treasury)	$319,809	0.2%	Rank history: not on the FY2022–FY2025 lists; down 33 since FY2020.

Show 75 more

100 of 720 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 $209 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 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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 J041 contractors in FY2021?

1. Johnson Controls Security Solutions LLC ($13.5M), 2. Centerpoint Energy, Inc. ($8.65M), 3. American Engineering Corporation ($8.4M), 4. Native Energy & Technology Inc. ($7.54M), 5. UD Contracting Inc. ($6.92M), 6. Cherokee Nation Environmental Solutions, L.L.C. ($5.16M), 7. Argus CJW JV 3 LLC ($4.89M), 8. Mechanical Resources Incorporated ($4.81M), 9. Dawson Solutions, Inc. ($4.21M), 10. TGW Landscaping & Contracting, Inc. ($4.06M).

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