| MPMortex Product Dba Summit Mfg Ft W | Fort Worth | TX | — | ◇ UNVERIFIED |
| MVMountain Valley Home Comfort INC. | Winchester | VA | — | ◇ UNVERIFIED |
| MIMpd INC | Santa Ana | CA | — | ◇ UNVERIFIED |
| MMMTE Mechanical,Inc. | Van Nuys | CA | — | ◇ UNVERIFIED |
| MLMwdc, LLC | Mission | KS | — | ◇ UNVERIFIED |
| MIMyrtle Industries INC | Jackson | MI | — | ◇ UNVERIFIED |
| NCNational Coil Wwtf | Longview | TX | — | ◇ UNVERIFIED |
| NSNational Serv Ind INC Lithoni | Industry | CA | — | ◇ UNVERIFIED |
| NLNederman LLC Dba Nordfab Ducting | Sparks | NV | — | ◇ UNVERIFIED |
| NNNexagen Networks INC. | Aberdeen | MD | — | ◇ UNVERIFIED |
| NSNexcoil Steel LLC | Stockton | CA | — | ◇ UNVERIFIED |
| NINfe, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| NMNh Manufacturing | San Jose | CA | — | ◇ UNVERIFIED |
| NNorcold (0375010146) | Sidney | OH | — | ◇ UNVERIFIED |
| NMNordson Medical | Ventura | CA | — | ◇ UNVERIFIED |
| NNordyne | O Fallon | MO | — | ◇ UNVERIFIED |
| NINordyne Inc-boonville Plant | Boonville | MO | — | ◇ UNVERIFIED |
| NGNortek Global Hvac | Poplar Bluff | MO | — | ◇ UNVERIFIED |
| NPNortheast Philadelphia Airport Federal Aviation Administration | Philadelphia | PA | — | ◇ UNVERIFIED |
| NCNorthern California Valley Sheetmetal Training Center | Mather | CA | — | ◇ UNVERIFIED |
| NFNorthwest Florida Ac, LLC | Inlet Beach | FL | — | ◇ UNVERIFIED |
| NPNorthwest Pipe and Casing | Clackamas | OR | — | ◇ UNVERIFIED |
| NHNsi Hvac | Bay Shore | NY | — | ◇ UNVERIFIED |
| NDNucor Data Systems | San Bernardino | CA | — | ◇ UNVERIFIED |
| ONO2 Natural Air LLC | South Bay | FL | — | ◇ UNVERIFIED |
| OAOasis Air Conditioning | Bakersfield | CA | — | ◇ UNVERIFIED |
| OHOhio Heat Transfer LLC | Saint Clairsville | OH | — | ◇ UNVERIFIED |
| OCOn Call Heating & Air, LLC | Trussville | AL | — | ◇ UNVERIFIED |
| ODOreco Duct Systems, INC. | Covina | CA | — | ◇ UNVERIFIED |
| OIOrthalign, INC. | Aliso Viejo | CA | — | ◇ UNVERIFIED |
| OHOutfitters Hvac, INC. | Centerville | UT | — | ◇ UNVERIFIED |
| OPOverland Park Mechanical | Stilwell | KS | — | ◇ UNVERIFIED |
| PMPace Metal Works | Cerritos | CA | — | ◇ UNVERIFIED |
| PEPacheco Enterprises LLC | Cumming | GA | — | ◇ UNVERIFIED |
| PAPacific Award Metals | Pomona | CA | — | ◇ UNVERIFIED |
| PIPac-refco INC | Hesperia | CA | — | ◇ UNVERIFIED |
| PMPalisade Manufacturing Company | Palisade | MN | — | ◇ UNVERIFIED |
| PMPalisade Metalcraft INC | Costa Mesa | CA | — | ◇ UNVERIFIED |
| PEPar Engineering INC Dba Commercial Cooling | City of Industry | CA | — | ◇ UNVERIFIED |
| PHParker Hannifin CORP | Lyons | NY | — | ◇ UNVERIFIED |
| PHParker Hannifin CORP Automotive Connectors Div. | Batesville | MS | — | ◇ UNVERIFIED |
| PCParker-hannifin Corporation | Sharon | TN | — | ◇ UNVERIFIED |
| PHParker Hannifin - Dunn Rd Plant | Lyons | NY | — | ◇ UNVERIFIED |
| PHParker Hannifin New Haven | New Haven | IN | — | ◇ UNVERIFIED |
| PSPassage Supply CO. | El Paso | TX | — | ◇ UNVERIFIED |
| PAP a Yannacio & Associates INC | Highland Hts | OH | — | ◇ UNVERIFIED |
| PIPci Industries LLC Dba Pottorff | Montebello | CA | — | ◇ UNVERIFIED |
| PVPecos Ventures Industries INC | Corona | CA | — | ◇ UNVERIFIED |
| PGPenguin Group USA | Kirkwood | NY | — | ◇ UNVERIFIED |
| PRPenn Refrigeration Service | Wilkes Barre | PA | — | ◇ UNVERIFIED |
| PLPeravan, LLC | North Las Vegas | NV | — | ◇ UNVERIFIED |
| PAPerformance Air Conditioning & Heating, INC | Glendale | AZ | — | ◇ UNVERIFIED |
 Performance Plastics INC | San Ysidro | CA | — | ◇ UNVERIFIED |
| PBPeter Brett | Santa Paula | CA | — | ◇ UNVERIFIED |
| PIPfannenberg INC | Lancaster | NY | — | ◇ UNVERIFIED |
| PCPinellas Cool Breeze Air LLC | Pinellas Park | FL | — | ◇ UNVERIFIED |
| PFPipe Fabricators International | El Cajon | CA | — | ◇ UNVERIFIED |
| PAPittsburgh Annealing Box CO | Mc Kees Rocks | PA | — | ◇ UNVERIFIED |
| PHPolar Heating & Cooling | El Paso | TX | — | ◇ UNVERIFIED |
| PKPolar King International INC | Fort Wayne | IN | — | ◇ UNVERIFIED |
| PSPolar Service Company INC | Salinas | CA | — | ◇ UNVERIFIED |
| PPortacool | Center | TX | — | ◇ UNVERIFIED |
| PPPps Packaging Company | Fowler | CA | — | ◇ UNVERIFIED |
| PIPraxair INC | Fairfield | AL | — | ◇ UNVERIFIED |
| PSPraxiar Surface Technologies | Los Angeles | CA | — | ◇ UNVERIFIED |
 Precision Control Systems INC | Eden Prairie | MN | — | ◇ UNVERIFIED |
| PEPrecision Elite Gymnastics | Clackamas | OR | — | ◇ UNVERIFIED |
| PRPrime Refrigeration Systems | Riverside | CA | — | ◇ UNVERIFIED |
| PAPristine Air Conditioning Corp. | Kapolei | HI | — | ◇ UNVERIFIED |
| PCProcess Cooling International | Saint Helena | CA | — | ◇ UNVERIFIED |
| PBProtech Building Services INC | West Valley | UT | — | ◇ UNVERIFIED |
| PHPure Humidifier Company | Chaska | MN | — | ◇ UNVERIFIED |
| RIR4f INC | Gardena | CA | — | ◇ UNVERIFIED |
| RIRahn Industries | Chino | CA | — | ◇ UNVERIFIED |
| RRRainey Road LLC | Andover | KS | — | ◇ UNVERIFIED |
| RGRamon Garcia | Weatherford | TX | — | ◇ UNVERIFIED |
| RTRandall's Temperture Control Specialist INC. | Yukon | OK | — | ◇ UNVERIFIED |
| RWRandell Warehouse | Tucson | AZ | — | ◇ UNVERIFIED |
| RIR-cold, INC. | Perris | CA | — | ◇ UNVERIFIED |
| RLRectorseal, LLC | Fall River | MA | — | ◇ UNVERIFIED |
| RSReefer Systems INC Dba Mct Companies | Fresno | CA | — | ◇ UNVERIFIED |
| RIR.e.f. Industries INC. | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| RDRefrigeration Design & Service, INC. | Mamaroneck | NY | — | ◇ UNVERIFIED |
| RDRefrigeration Design Technologies | Waxahachie | TX | — | ◇ UNVERIFIED |
| RRRefrigeration Research INC | Newport | TN | — | ◇ UNVERIFIED |
| RPRennwerks Performance INC Dba Sprint Motorsports | Tracy | CA | — | ◇ UNVERIFIED |
| RMRicardo Maldonado | Allen | TX | — | ◇ UNVERIFIED |
| RMRichardson Mechanical | Richardson | TX | — | ◇ UNVERIFIED |
| RDRickelle Dickerson | Garden Grove | CA | — | ◇ UNVERIFIED |
| RERitchie Engineering Company INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| RRRitemp Refrigeration, INC. | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| RWRj Welding | Fontana | CA | — | ◇ UNVERIFIED |
| RMRms Manufacturing | Manteca | CA | — | ◇ UNVERIFIED |
| RSRms Supply INC Dba Rms Manufacturing | Manteca | CA | — | ◇ UNVERIFIED |
| RBRobert Brown | Houston | TX | — | ◇ UNVERIFIED |
| RMRocky Mountain Mechanical Systems, INC. | Colorado Springs | CO | — | ◇ UNVERIFIED |
| RSRomac Supply CO | Commerce | CA | — | ◇ UNVERIFIED |
| RMRoofscreen Manufacturing | San Andreas | CA | — | ◇ UNVERIFIED |
| RMRoyal Metal Works, INC. | Las Vegas | NV | — | ◇ UNVERIFIED |
| RCRoyce Company | Wilmington | NC | — | ◇ UNVERIFIED |
