| ASArlu Services INC | Miami | FL | — | ◇ UNVERIFIED |
| AIArpi International Corporation | Miami | FL | — | ◇ UNVERIFIED |
| AIArral Ind | Ontario | CA | — | ◇ UNVERIFIED |
| AArrco ,llc | Cookeville | TN | — | ◇ UNVERIFIED |
| APArthur P. Lamarre and Sons, INC. | Turlock | CA | — | ◇ UNVERIFIED |
| ARAsl Refrigeration INC. | Bethlehem | PA | — | ◇ UNVERIFIED |
| AAsm | East Palo Alto | CA | — | ◇ UNVERIFIED |
| AIAstro-fab INC | Pico Rivera | CA | — | ◇ UNVERIFIED |
| AIAtecc, INC. | Las Vegas | NV | — | ◇ UNVERIFIED |
| ATAtlas Technologies INC | Bozeman | MT | — | ◇ UNVERIFIED |
| APAts Products INC | Richmond | CA | — | ◇ UNVERIFIED |
| AHAustin Heating and Cooling LLC | Charlotte | NC | — | ◇ UNVERIFIED |
| ASAvalon Sheet Metal & Ironwork | Agoura Hills | CA | — | ◇ UNVERIFIED |
| AMAvenu Medical | San Juan Capistrano | CA | — | ◇ UNVERIFIED |
| ASAxe Sheet Metal/lavang Technologies | Westminster | CA | — | ◇ UNVERIFIED |
| AIAxial Industries | San Jose | CA | — | ◇ UNVERIFIED |
| BEBaardsen-krahn Enterprises, INC | Phoenix | AZ | — | ◇ UNVERIFIED |
| BBBabcock Borsig Power | Erie | PA | — | ◇ UNVERIFIED |
| BWBannister Woodworking | Lodi | CA | — | ◇ UNVERIFIED |
| BCBarker Company | Centerville | IA | — | ◇ UNVERIFIED |
| BRBa Romines Sheetmetal INC. | Fort Wayne | IN | — | ◇ UNVERIFIED |
| BCBarry Controls | Burbank | CA | — | ◇ UNVERIFIED |
| BCBay Cities Tin Shop INC Dba Bay Cities Metal Products | Gardena | CA | — | ◇ UNVERIFIED |
| BCBay Climate Control & Refrigeration, LLC | Mobile | AL | — | ◇ UNVERIFIED |
| BDBecton Dickenson | San Diego | CA | — | ◇ UNVERIFIED |
| BCBehr Climate Systems INC | Fort Worth | TX | — | ◇ UNVERIFIED |
| BOBerco of America Aftermarket | Puyallup | WA | — | ◇ UNVERIFIED |
| BBesteel | Industry | CA | — | ◇ UNVERIFIED |
| BVBest Value A/c & Heating, LLC | Ormond Beach | FL | — | ◇ UNVERIFIED |
| BBBeta Bionics | Irvine | CA | — | ◇ UNVERIFIED |
| BCBeverage-air CO | Spartanburg | SC | — | ◇ UNVERIFIED |
| BGB & G Air Conditioning Incorporated | El Paso | TX | — | ◇ UNVERIFIED |
| BDBig Dawg Manufacturing INC. | Baldwin Park | CA | — | ◇ UNVERIFIED |
| BLBig Lic Company | Floyd | VA | — | ◇ UNVERIFIED |
| BRBig Red Machine Shop | Burbank | CA | — | ◇ UNVERIFIED |
| BIBishamon Industries Corporatio | Ontario | CA | — | ◇ UNVERIFIED |
| BPBlue Plus Green | Brooklyn | NY | — | ◇ UNVERIFIED |
| BSBlue Stone, Inc. | Churchville | PA | — | ◇ UNVERIFIED |
| BCBluff City Sheet Metal INC | Memphis | TN | — | ◇ UNVERIFIED |
| BHB.M. HVAC Fitting Supply, Inc | Perris | CA | — | ◇ UNVERIFIED |
| BBBone Bright Rl | Lincoln | NE | — | ◇ UNVERIFIED |
| BVBorn Vintage Hot Rods | Bakersfield | CA | — | ◇ UNVERIFIED |
| BCBrainerd Compressor Rebuilders, INC | Memphis | TN | — | ◇ UNVERIFIED |
| BPBreezaire Products Company | San Diego | CA | — | ◇ UNVERIFIED |
| BSBritz Store Equipment INC | Buckman | MN | — | ◇ UNVERIFIED |
| BHBrogan Heating and Air | Rochester | MN | — | ◇ UNVERIFIED |
| BEBrothers Energy Incorporated | San Francisco | CA | — | ◇ UNVERIFIED |
| BABus Air Manufacturing/woods Metal Fabrication | Rhome | TX | — | ◇ UNVERIFIED |
| BSBva Systems, INC | Sparks | NV | — | ◇ UNVERIFIED |
| CMCabrac Mfg | San Fernando | CA | — | ◇ UNVERIFIED |
| CDCa Dept. of Transportation | Laguna Niguel | CA | — | ◇ UNVERIFIED |
| CCCal Coast Refrigeration INC. | Santa Barbara | CA | — | ◇ UNVERIFIED |
| CSCalcor Space Fac INC | Whittier | CA | — | ◇ UNVERIFIED |
| CACalifornia Air Conveying Corporation | Baldwin Park | CA | — | ◇ UNVERIFIED |
| CICalifornia Industrial Refrigeration Machines INC. | Eastvale | CA | — | ◇ UNVERIFIED |
| CUCalifornia United Mechanical Dba United Mechanical INC | San Jose | CA | — | ◇ UNVERIFIED |
| C4Calion 4th Street Warehouse | Berkeley | CA | — | ◇ UNVERIFIED |
| CCCalsonic Climate Control Incorporated | Irvine | CA | — | ◇ UNVERIFIED |
| CCaltrans | Azusa | CA | — | ◇ UNVERIFIED |
| CMCanam Metal Prod | San Bernardino | CA | — | ◇ UNVERIFIED |
| CVCapital View General Construction, INC. | Colorado Springs | CO | — | ◇ UNVERIFIED |
| CCCarrier Corporation | Pelham | AL | — | ◇ UNVERIFIED |
| CCCarrier Corporation | Syracuse | NY | — | ◇ UNVERIFIED |
| CCCarrier Corporation | Indianapolis | IN | — | ◇ UNVERIFIED |
| CCCarrier CORP Tyler | Tyler | TX | — | ◇ UNVERIFIED |
 Carrier Process Equipment Group INC | Mathiston | MS | — | ◇ UNVERIFIED |
| CTCarrier Transicold | Riverside | CA | — | ◇ UNVERIFIED |
| CCCatalina Composites | Garden Grove | CA | — | ◇ UNVERIFIED |
| CVCephea Valve Technologies | Santa Cruz | CA | — | ◇ UNVERIFIED |
| CCCeramic Cooling Tower CORP | Fort Worth | TX | — | ◇ UNVERIFIED |
| CMCertified Mechanical Insulation, LLC | Little Rock | AR | — | ◇ UNVERIFIED |
| CGC G I Sys | Paramount | CA | — | ◇ UNVERIFIED |
| CPCharmaster Products INC | Grand Rapids | MN | — | ◇ UNVERIFIED |
| CLChasan LLC | Bristol | VA | — | ◇ UNVERIFIED |
| CECheek Engineering & Stamping | Tustin | CA | — | ◇ UNVERIFIED |
| CECimarron Engineering, INC. | Wheat Ridge | CO | — | ◇ UNVERIFIED |
| CRCimco Refrigeration, INC. | Centennial | CO | — | ◇ UNVERIFIED |
| CLCinfab LLC | Lexington | KY | — | ◇ UNVERIFIED |
| CTCitizens Thermal - Iu Health (@ Riley Hosp) Chilled Water Plant | Indianapolis | IN | — | ◇ UNVERIFIED |
| COCity of Capitola | Capitola | CA | — | ◇ UNVERIFIED |
| CHClean Harbors | San Diego | CA | — | ◇ UNVERIFIED |
| CIClearflow, INC | Anaheim | CA | — | ◇ UNVERIFIED |
| CBClimate By Design Internatioanal | Owatonna | MN | — | ◇ UNVERIFIED |
| CBClimate By Design International INC | Owatonna | MN | — | ◇ UNVERIFIED |
| CMClimate Master of New Bern, LLC | New Bern | NC | — | ◇ UNVERIFIED |
| CRC&l Refrigeration | Corona | CA | — | ◇ UNVERIFIED |
| CICmc INC | Cabo Rojo | PR | — | ◇ UNVERIFIED |
| CACoastal Air LLC | Harrington | DE | — | ◇ UNVERIFIED |
| CRCoast Radiator Company | Los Angeles | CA | — | ◇ UNVERIFIED |
| CHCobalt Hvac Supply LLC | De Soto | KS | — | ◇ UNVERIFIED |
| CYCobalt Yachts | Vonore | TN | — | ◇ UNVERIFIED |
| CDCoil Design Corporation | Dayton | TN | — | ◇ UNVERIFIED |
| CMCoil Master Corporation | Moscow | TN | — | ◇ UNVERIFIED |
| CCCoilmaster Corporation | Phoenix | AZ | — | ◇ UNVERIFIED |
| CPCold Point Corporation | Rome | NY | — | ◇ UNVERIFIED |
| CCColmac Coil Mfg INC | Colville | WA | — | ◇ UNVERIFIED |
| CMColorado Mechanical Systems INC | Longmont | CO | — | ◇ UNVERIFIED |
| CICommodore Industries | Jackson | TN | — | ◇ UNVERIFIED |
| CHCommonwealth Heating & Cooling | Virginia Beach | VA | — | ◇ UNVERIFIED |
| CMComponents Manufacturing CO | Trenton | SC | — | ◇ UNVERIFIED |
