| JMJohnson Marcraft | Maryland Heights | MO | — | ◇ UNVERIFIED |
| JSJohnstone Supply INC | Joliet | IL | — | ◇ UNVERIFIED |
| JAJp America, INC. | Hampshire | IL | — | ◇ UNVERIFIED |
| JAJ.T. Air Conditioning Tec Corp | Ponce | PR | — | ◇ UNVERIFIED |
| JPJustified Performance | Auburn | CA | — | ◇ UNVERIFIED |
| KKais-air | Holly | MI | — | ◇ UNVERIFIED |
| KIKathabar Incorporated Elizabethtown Plant | Elizabethtown | NC | — | ◇ UNVERIFIED |
| KCKays Cleaners/donora | Donora | PA | — | ◇ UNVERIFIED |
| KCK C Metals | San Jose | CA | — | ◇ UNVERIFIED |
| KTKeesee Tank CO INC | Placentia | CA | — | ◇ UNVERIFIED |
| KCKelbro Company Dba Shamrock Group | Minneapolis | MN | — | ◇ UNVERIFIED |
| KAKeller's Auto Body INC | Selinsgrove | PA | — | ◇ UNVERIFIED |
| KSKevin Stafford | San Francisco | CA | — | ◇ UNVERIFIED |
| KSKiker Sheet Metal INC. | Pleasantville | NJ | — | ◇ UNVERIFIED |
| KLKjc16, LLC | Arlington | TX | — | ◇ UNVERIFIED |
| KRKmt Refrigeration INC Mccall Div | Parsons | TN | — | ◇ UNVERIFIED |
| KMKnoer Mechanical LLC | Goodyear | AZ | — | ◇ UNVERIFIED |
| KMKnott Mechanical, INC. | Hunt Valley | MD | — | ◇ UNVERIFIED |
| KPKold Pack INC | Jackson | MI | — | ◇ UNVERIFIED |
| KIKorden INC | Ontario | CA | — | ◇ UNVERIFIED |
| KGKps Global | Goodyear | AZ | — | ◇ UNVERIFIED |
| KCKrack CORP | Addison | IL | — | ◇ UNVERIFIED |
| KMKsb Mechanical, INC. | Quartz Hill | CA | — | ◇ UNVERIFIED |
| KIKuhlman INC. | Northlake | IL | — | ◇ UNVERIFIED |
| KPKysor Panel Sys | Fort Worth | TX | — | ◇ UNVERIFIED |
| KPKysor Panel Systems | Goodyear | AZ | — | ◇ UNVERIFIED |
| KWKysor Warren Case Plant | Columbus | GA | — | ◇ UNVERIFIED |
| LLancer | San Antonio | TX | — | ◇ UNVERIFIED |
 Lane Enterprises LLC | Sacramento | CA | — | ◇ UNVERIFIED |
| LILaporte Industries, LLC | Athens | TX | — | ◇ UNVERIFIED |
| LRLa Rosa Refrigeration & Equipment CO | Detroit | MI | — | ◇ UNVERIFIED |
| LFLaser Flow Products INC | Vista | CA | — | ◇ UNVERIFIED |
| LVLa Vocal Booths | Riverside | CA | — | ◇ UNVERIFIED |
| LALawson Air Conditioning & Plumbing, INC. | Gainesville | GA | — | ◇ UNVERIFIED |
| LILennox Industries | Gainesville | FL | — | ◇ UNVERIFIED |
| LILennox Industries INC | Columbus | OH | — | ◇ UNVERIFIED |
| LILennox Industries INC | Gainesville | FL | — | ◇ UNVERIFIED |
| LILennox International | Columbus | GA | — | ◇ UNVERIFIED |
| LPLeo Prescott Air Conditioning & Heating LLC | Chino Valley | AZ | — | ◇ UNVERIFIED |
| LILinesets, INC. | Phoenix | AZ | — | ◇ UNVERIFIED |
| LSLitton Systems INC Encoder Div | Chatsworth | CA | — | ◇ UNVERIFIED |
| LHLorenzo Heating & Cooling | San Jose | CA | — | ◇ UNVERIFIED |
| LCLouisville Cooler Mfg CO | Louisville | KY | — | ◇ UNVERIFIED |
| LALrg Air Conditioning & Services LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| LMLukjan Metal Products Carolina, INC. | Kings Mountain | NC | — | ◇ UNVERIFIED |
| LILumax Industries INC. | Altoona | PA | — | ◇ UNVERIFIED |
| LCLuminex Corporation | Hayward | CA | — | ◇ UNVERIFIED |
| LHLundy Heating & Air Inc. | Perryville | MO | — | ◇ UNVERIFIED |
| LHLundy Heating & Air Inc. | Perryville | MO | — | ◇ UNVERIFIED |
| LHLuppold Heating & Cooling | Leesport | PA | — | ◇ UNVERIFIED |
| LGLuvata Grenada Llc, Lal Products | Grenada | MS | — | ◇ UNVERIFIED |
| LILuvata INC | San Leandro | CA | — | ◇ UNVERIFIED |
| MIMaccauley Instruments CORP | Chatsworth | CA | — | ◇ UNVERIFIED |
| MCMacintyre CORP. | Hayward | CA | — | ◇ UNVERIFIED |
| MSMajestic Steel USA | Fontana | CA | — | ◇ UNVERIFIED |
| MMManns Manufacturing | Hubbard | OR | — | ◇ UNVERIFIED |
| MIMap Industries Lf, INC. | Panama City | FL | — | ◇ UNVERIFIED |
| MRMarc Refrigeration Manufacturing | Coral Springs | FL | — | ◇ UNVERIFIED |
| MRMartin Refrigeration LLC | Warrensburg | MO | — | ◇ UNVERIFIED |
| MEMaryam Enterprises LLC | Lisle | IL | — | ◇ UNVERIFIED |
| MMMaser Mechanical INC | Simi Valley | CA | — | ◇ UNVERIFIED |
| MPMass Precision Sheetmetal | San Jose | CA | — | ◇ UNVERIFIED |
| MEMaster-bilt Engineered Structures | Sparks | NV | — | ◇ UNVERIFIED |
| MMasterbilt/standex | New Albany | MS | — | ◇ UNVERIFIED |
| MHMatrix Hvacr LLC | Miami | FL | — | ◇ UNVERIFIED |
| MQMaximum Quality Metal Products INC | Ontario | CA | — | ◇ UNVERIFIED |
| MUMayekawa U S A, INC | San Antonio | TX | — | ◇ UNVERIFIED |
| MCMBA Corporation | Saint Francis | WI | — | ◇ UNVERIFIED |
| MWMclaughlin Waste Equipment INC | Canyon Country | CA | — | ◇ UNVERIFIED |
| MCMcmurray Cooling and Heating INC. | Venetia | PA | — | ◇ UNVERIFIED |
| MIMcquay International INC | Verona | VA | — | ◇ UNVERIFIED |
| MBMct Bakersfield LLC Dba Carrier | Fresno | CA | — | ◇ UNVERIFIED |
| MMMeddco Metals | Hayward | CA | — | ◇ UNVERIFIED |
| MAMedic Air LLC | Santa Ana | CA | — | ◇ UNVERIFIED |
| MIMee Industries,Inc | Azusa | CA | — | ◇ UNVERIFIED |
| MCMelink Corporation | Knoxville | TN | — | ◇ UNVERIFIED |
| MIMenold, INC | Essington | PA | — | ◇ UNVERIFIED |
| MMMericle Mechanical, INC | Placentia | CA | — | ◇ UNVERIFIED |
 Merlin Industries, INC. | Davie | FL | — | ◇ UNVERIFIED |
| MSMerlin Solar Technologies, INC | San Jose | CA | — | ◇ UNVERIFIED |
| MMMermaid Manufacturing of Southwest Florida, INC. | Fort Myers | FL | — | ◇ UNVERIFIED |
| MTMetal Techniques INC | Canoga Park | CA | — | ◇ UNVERIFIED |
| M3Metcor 360 INC | Gardena | CA | — | ◇ UNVERIFIED |
| MIMetec, INC. | Daytona Beach | FL | — | ◇ UNVERIFIED |
| MEMetropolitan Enterprises INC | Waldorf | MD | — | ◇ UNVERIFIED |
| MIMez Industries, INC. | Covina | CA | — | ◇ UNVERIFIED |
| MPMicroera Power at Ahead Energy | Rochester | NY | — | ◇ UNVERIFIED |
| MCMid-state Correctional Facility | Marcy | NY | — | ◇ UNVERIFIED |
| MCMidwest Cooling Tower Services, INC. | Krotz Springs | LA | — | ◇ UNVERIFIED |
| MHMile High Equipment CO | Denver | CO | — | ◇ UNVERIFIED |
| MSMiller Sheet Metal & Heating, INC. | Kenai | AK | — | ◇ UNVERIFIED |
| MLM Lewis Holdings LLC | Elkhart | IN | — | ◇ UNVERIFIED |
| MLM & L Metals INC | Hayward | CA | — | ◇ UNVERIFIED |
| MAMmci Acquisition LLC Dba Mortech Manufacturing | Azusa | CA | — | ◇ UNVERIFIED |
| MAModine Aftermarket Holdings INC | Miami | FL | — | ◇ UNVERIFIED |
| MAModine Airsystems INC | Saint Paul | MN | — | ◇ UNVERIFIED |
 Modine Manufacturing Co-modine Manufacturing CO | Camdenton | MO | — | ◇ UNVERIFIED |
| Modine Manufacturing Company - Lexington | Lexington | VA | — | ◇ UNVERIFIED |
| Modine Manufacturing Grenada Lal | Grenada | MS | — | ◇ UNVERIFIED |
| MMMonaghan Mechanical, INC. | Coeur D Alene | ID | — | ◇ UNVERIFIED |
