 Chromalox, INC. | La Vergne | 100–499 | ● ACTIVE |
 Colbert Manufacturing Company, INC. | La Vergne | — | ● ACTIVE |
 Brennan Jacobs INC. | Murfreesboro | — | ● ACTIVE |
 Jpw Industries INC. | La Vergne | — | ● ACTIVE |
| OHOutokumpu Heatcraft USA | Murfreesboro | — | ◇ UNVERIFIED |
| AGAmerican Geothermal Corp Inc | Murfreesboro | 20–99 | ◐ LIKELY ACTIVE |
| MUMEIKO USA, Inc. Nashville | La Vergne | 20–99 | ◐ LIKELY ACTIVE |
| OHOld Hickory Buildings, LLC | Murfreesboro | 1–19 | ◐ LIKELY ACTIVE |
| SUSwegon USA Inc. - Tennessee | Murfreesboro | 20–99 | ◐ LIKELY ACTIVE |
| ACAdvanced Cooling Heating Refrigeration INC | Murfreesboro | — | ◇ UNVERIFIED |
| CMCenterline Mfg INC Centerline Mfg CO. in | Smyrna | — | ◇ UNVERIFIED |
| CAComplete Auto-mation INC | Smyrna | — | ◇ UNVERIFIED |
| FTFampec Technology LLC | Murfreesboro | — | ◇ UNVERIFIED |
| GBGateway Bobcat of Missouri INC | La Vergne | — | ◇ UNVERIFIED |
| GPGeorge P. Johnson Company | Smyrna | — | ◇ UNVERIFIED |
| HWHeartland Water Technology, INC | Murfreesboro | — | ◇ UNVERIFIED |
| HIHoneywell International, INC. | Murfreesboro | — | ◇ UNVERIFIED |
| KBKennedy & Bowden Machine Co., INC. | La Vergne | — | ◇ UNVERIFIED |
| KSKmh Systems INC | La Vergne | — | ◇ UNVERIFIED |
| LILam International CORP USA | Smyrna | — | ◇ UNVERIFIED |
| NPNational Parts Corporation | Murfreesboro | — | ◇ UNVERIFIED |
| SIStandex International Corporation | Smyrna | — | ◇ UNVERIFIED |
| TMTurner Machine Co., INC. | Smyrna | — | ◇ UNVERIFIED |
