| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | F & G Engineers, Inc. | MEP engineering | 4 |
| 2 | Far East Consulting Engineers Limited | MEP engineering | 3 |
| 3 | Fink und Janda GbR | MEP engineering | 1 |
| 4 | Firestop International, LLC | MEP engineering | 2 |
| 5 | Firestop International, LLC | MEP engineering | 2 |
| 6 | Flack + Kurtz | MEP engineering | 74 |
| 7 | Flack + Kurtz | MEP engineering | 14 |
| 8 | Florida Engineering Services | MEP engineering | 12 |
| 9 | Fonval. Fontaneria Valencia | MEP engineering | 2 |
| 10 | Fosdick & Hilmer, Inc. | MEP engineering | 4 |
| 11 | Foster, Jacobs & Johnson Inc. | MEP engineering | 3 |
| 12 | Francis Associates | MEP engineering | 2 |
| 13 | Frank Leverone Consultants | MEP engineering | 3 |
| 14 | Frank Shannon, P.E. | MEP engineering | 1 |
| 15 | Franyie Engineers, Inc. | MEP engineering | 62 |
| 16 | Fredensborg VVS Teknik A/S | MEP engineering | 1 |
| 17 | Fritzson VVS-teknik AB | MEP engineering | 1 |
| 18 | Fryda Dorne & Associates Pty Ltd. | MEP engineering | 1 |
| 19 | Fudo Construction Co., Ltd. | MEP engineering | 8 |
| 20 | Fulcrum Consulting | MEP engineering | 5 |