| FAFCO - Thermal Energy Storage Sys. | DMG Corporation |
| Fan Coil Units - Superior Rex | K.H. Watts Company, Inc. |
| Fan Powered VAV Boxes (Enviro-Tec) | Air Conditioning Specialties Co. |
| Fans | Trane Company, The |
| Fans Blowers (Greenheck) | Airelink Products Corporation |
| FARR Cleanroom Components | Class One Technology |
| Filtration, Chemical (Bioclimatic) | Air Treatment Corp. |
| Fire-Smoke Detectors | Haldeman, Inc. |
| Firestone Airmounts/Airides | California Dynamics Corp. |
| Flow Control | DB Sales & Service |
| Fow Control Valves - FCI | DMG Corporation |
| Flow Measurement | DB Sales & Service |
| Flow Safe - Fume Hood Flow Control | Toro-Aire, Inc. |
| Floway - Vertical Turbine Pumps | Dawson Co. |
| Fulton Boiler - Thermal Oil Heaters | Hugh Dean & Co. |
| Fume Hood Controls | Landis & Staefa, Inc. |