 | Cumming Group | new york, new york, united states | 2.5K | construction | - | |
 | Linxon | baden, switzerland, switzerland | 709 | construction | 2018 | |
 | Climate Pros, LLC | glendale heights, illinois, united states | 575 | construction | 2006 | |
 | King & Moffatt Building Services | carrick on shannon, leitrim, ireland | 278 | construction | 1978 | |
 | Schell Brothers | rehoboth beach, delaware, united states | 186 | construction | 2003 | |
 | Berkel & Company Contractors, Inc. | Bonner Springs, kansas, united states | 320 | construction | 1959 | |
 | Building Controls and Services, Inc. | Wichita, kansas, united states | 130 | construction | 1985 | |
 | Kiewit | omaha, nebraska, united states | 24.2K | construction | 1884 | |
 | New Energy Works Timberframers | Farmington, new york, united states | 48 | construction | 1986 | |
 | NABCO Canada Inc. | richmond hill, ontario, canada | 38 | construction | 2014 | |
 | contra costa electric, inc. | martinez, california, united states | 202 | construction | 1946 | |
 | 𝐛𝐨𝐲𝐝𝐞𝐧𝐬 𝐞𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 part of Sweco | Dilbeek, flanders, belgium | 120 | construction | 1961 | |
 | Buckley Associates | Rockland, massachusetts, united states | 130 | construction | 1970 | |
 | Wilson Air Conditioning Service, Inc. | Powder Springs, georgia, united states | 17 | construction | - | |
 | Fluor Corporation | irving, texas, united states | 36.4K | construction | 1912 | |
 | Intelligent Environments Limited (NZ) | Auckland, auckland region, new zealand | 14 | construction | 2007 | |
 | Air Control Products, Inc. | Broadview Heights, ohio, united states | 74 | construction | 1975 | |
 | Ringer Windows | Taylor, texas, united states | 7 | construction | 2007 | |
 | Environmental Controls Corp. | Tigard, oregon, united states | 28 | construction | 1987 | |
 | air systems service & construction | sacramento, california, united states | 99 | construction | 1996 | |
