| AAkuratemp | Arden | NC | 20–99 | ◐ LIKELY ACTIVE |
| AGAmerican Geothermal Corp Inc | Murfreesboro | TN | 20–99 | ◐ LIKELY ACTIVE |
| ASAmerican Superconductor Corporation - Washington | Richland | WA | 1–19 | ◐ LIKELY ACTIVE |
| ASAmeri Serv Water Technology, LLC | Jacksonville | FL | — | ◐ LIKELY ACTIVE |
| AAnemostat | Carson | CA | 100–499 | ◐ LIKELY ACTIVE |
| AFAtco Fwcj | Fort Worth | TX | 100–499 | ◐ LIKELY ACTIVE |
| ARATCO Rubber Products, Crawfordsville | Crawfordsville | IN | 20–99 | ◐ LIKELY ACTIVE |
| ARATCO Rubber Products Houston | Houston | TX | 20–99 | ◐ LIKELY ACTIVE |
| ARATCO Rubber Products, Phoenix | Phoenix | AZ | 20–99 | ◐ LIKELY ACTIVE |
| ARATCO Rubber Products Plainville PV | Plainville | GA | 100–499 | ◐ LIKELY ACTIVE |
| ARATCO Rubber Products Plant City | Plant City | FL | 20–99 | ◐ LIKELY ACTIVE |
| ARATCO Rubber Products Sacramento CA | Sacramento | CA | 20–99 | ◐ LIKELY ACTIVE |
| ARATCO Rubber Products Springdale | Springdale | AR | 20–99 | ◐ LIKELY ACTIVE |
| ARATCO Rubber Products Vineland NJ | Vineland | NJ | 20–99 | ◐ LIKELY ACTIVE |
| AMAuston Mealer's Restaurant Equipment Service, LLC | Dyersburg | TN | — | ◐ LIKELY ACTIVE |
| AGAzk Global LLC | Ashburn | VA | — | ◐ LIKELY ACTIVE |
| BABaltimore Aircoil Company | Dayton | TN | 100–499 | ◐ LIKELY ACTIVE |
| BABeverage Air Corporation | Winston Salem | NC | 20–99 | ◐ LIKELY ACTIVE |
| BFBlue Frontier, Inc. - 1200 S Rogers | Boca Raton | FL | 1–19 | ◐ LIKELY ACTIVE |
| BFBlue Frontier, Inc. - HQ | Boca Raton | FL | 20–99 | ◐ LIKELY ACTIVE |
| BRBonito River Services, INC. | Ruidoso | NM | — | ◐ LIKELY ACTIVE |
| BSBriggs Service, INC | Buckeye | AZ | — | ◐ LIKELY ACTIVE |
| BCBTS Chillers | San Antonio | TX | 100–499 | ◐ LIKELY ACTIVE |
| BSBurks Sales Company, Inc., S. E. | Henrico | VA | — | ◐ LIKELY ACTIVE |
| CICairns Industries | Mentor | OH | 20–99 | ◐ LIKELY ACTIVE |
| CRCalvary Robotics - Webster, NY | Webster | NY | 100–499 | ◐ LIKELY ACTIVE |
| CCCarrier Corporation (Charlotte) | Charlotte | NC | 100–499 | ◐ LIKELY ACTIVE |
| CCCarrier Corporation (Collierville) | Collierville | TN | 500+ | ◐ LIKELY ACTIVE |
| CCCarrier Corporation (Indianapollis) | Indianapolis | IN | 500+ | ◐ LIKELY ACTIVE |
| CPCarrier Puerto Rico INC | Guaynabo | PR | — | ◐ LIKELY ACTIVE |
| CSCclm Supply, LLC | Sellersburg | IN | — | ◐ LIKELY ACTIVE |
| CCCMS Cooling LLC | El Mirage | AZ | 20–99 | ◐ LIKELY ACTIVE |
| CICodab International LLC | Katy | TX | — | ◐ LIKELY ACTIVE |
| CCColmac Coil Manufacturing, Inc. | Colville | WA | 100–499 | ◐ LIKELY ACTIVE |
| CHColorado Heating & Cooling LLC | Yuma | AZ | — | ◐ LIKELY ACTIVE |
| CRCombined Refrigeration Resources Inc. | Houston | TX | 100–499 | ◐ LIKELY ACTIVE |
| CHCommercial HVAC - Americas : MFG-Charlotte, NC-USA | Charlotte | NC | 100–499 | ◐ LIKELY ACTIVE |
| CHCommercial HVAC - Americas : MFG-Clarksville, TN-USA | Clarksville | TN | 500+ | ◐ LIKELY ACTIVE |
| CHCommercial HVAC - Americas : MFG-Columbia, SC-USA | Columbia | SC | 500+ | ◐ LIKELY ACTIVE |
| CHCommercial HVAC - Americas : MFG-FairLawn NJ-USA | Fair Lawn | NJ | 20–99 | ◐ LIKELY ACTIVE |
| CHCommercial HVAC - Americas : MFG-Ft. Smith1, AR-USA | Fort Smith | AR | 100–499 | ◐ LIKELY ACTIVE |
| CHCommercial HVAC - Americas : MFG-Grand Rapids Chillers MI-USA | Grand Rapids | MI | 100–499 | ◐ LIKELY ACTIVE |
| CHCommercial HVAC - Americas : MFG-Grand Rapids Final Finisher MI-USA | Grand Rapids | MI | 100–499 | ◐ LIKELY ACTIVE |
| CHCommercial HVAC - Americas : MFG-La Crosse, WI-USA | La Crosse | WI | 500+ | ◐ LIKELY ACTIVE |
| CHCommercial HVAC - Americas : MFG-Lynn Haven, FL-USA | Panama City | FL | 500+ | ◐ LIKELY ACTIVE |
| CHCommercial HVAC - Americas : MFG-Newberry, SC-USA | Newberry | SC | 100–499 | ◐ LIKELY ACTIVE |
| CHCommercial HVAC - Americas : MFG-Pueblo, CO-USA | Pueblo | CO | 500+ | ◐ LIKELY ACTIVE |
| CHCommercial HVAC - Americas : MFG-Rushville, IN-USA | Rushville | IN | 100–499 | ◐ LIKELY ACTIVE |
| CHCommercial HVAC - Americas : MFG-Waco, TX-USA | Mc Gregor | TX | 100–499 | ◐ LIKELY ACTIVE |
| CAComplete Air Conditioning & Refrigeration INC | Panama City | FL | — | ◐ LIKELY ACTIVE |