| SMSigma Manufacturing INC. | Marietta | GA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SDSignal Division Lukens Genera | La Mirada | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SJS & J Sheet Metal Supply, INC. | Bronx | NY | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SMS & M Aire, LLC | El Paso | TX | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SISonora Industries | Rancho Cucamonga | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SCSouth County Air Services INC. | Irvine | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SCSouthern Comfort Heating & Air Conditioning, INC. | Dahlonega | GA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SRSouthtown Refrigeration | Brooklyn Park | MN | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SSSpecific Systems, LLC | Tulsa | OK | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| SSSpencer Street Self Storage, LLC | Torrance | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SSSpig S.p.a. | Corpus Christi | TX | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SESpinal Elements | Fremont | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SCSpx Cooling Technologies, INC | Peculiar | MO | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SCSquare 'd' CO | Chino | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SIStainless International | Rancho Cordova | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| STSteel Tek | Tulsa | OK | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SEStellar Energy Americas, INC. | Jacksonville | FL | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SGStellar Group, INC. | Mamaroneck | NY | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SAStewart Air Systems General Partnership | Azusa | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SFStrategic Finishing INC | Tualatin | OR | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| SPStructo Pte LTD | Valencia | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SAStudio Air Conditioning INC. | Calabasas | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SAStulz Air Technology Systems INC | Frederick | MD | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SISubzero Insulation & Refrigeration Technologies LLC | Brooklyn | NY | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SBSun Badge CO | San Dimas | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SLSuperb LLC | Costa Mesa | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| STSupercooler Technologies, INC. | Orlando | FL | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SFSuperior Filtration Products LLC | North Salt Lake | UT | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SFSuperior Fireplace CO | Fullerton | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SFSuperior Fireplace CO | Fullerton | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SHSuperior Hoods, INC. | Tucker | GA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SPSuperior Precision Metal | Canoga Park | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SRSuperior Roof Metals Ii | San Jose | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SISwegon, INC. | Sparks | NV | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SHSwisher Hvac CORP. | Brownsville | TX | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SISystem Incorporated | Seattle | WA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| TSTamarack Solar Products | Willits | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| TITecogen INC | Waltham | MA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| TTedco | Livermore | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| TRTeknotherm Refrigeration | Seattle | WA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| TCTemperature Controlled Systems, INC | Gloucester | MA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| TATemtrol a Nortek Air Solutions Brand | Okarche | OK | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| TATexas All Temp Control LLC | Houston | TX | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| TCTexas Coil | Fort Worth | TX | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| TEThe Eldon Corporation | Jefferson | LA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| TTheranova | San Francisco | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| TKThermo King De Puerto Rico | Arecibo | PR | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| TKThermo King Pr Manufactura INC Tk-5 | Arecibo | PR | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| TKThermo King Puerto Rico Manufactura INC. | Arecibo | PR | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| TTThe Trane Company - Main Complex | La Crosse | WI | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
