| FFriconusa | Flowery Branch | GA | — | ◇ UNVERIFIED |
| FZFrio Zone Refrigeration | Chula Vista | CA | — | ◇ UNVERIFIED |
| FTFujitsu Ten Company of America | Rushville | IN | — | ◇ UNVERIFIED |
| GBGardner Bellows CORP | Chatsworth | CA | — | ◇ UNVERIFIED |
| GRGartner Refrigeration and Manufacturing, INC | West Springfield | MA | — | ◇ UNVERIFIED |
| GDGas Drive Global US INC. | Vernal | UT | — | ◇ UNVERIFIED |
| GDG & D Chillers INC | Eugene | OR | — | ◇ UNVERIFIED |
| GRGea Rainey Heat Exchangers, INC. | Catoosa | OK | — | ◇ UNVERIFIED |
| GSGea Sys North Amer Llc/york | York | PA | — | ◇ UNVERIFIED |
| GHGeneral Heating & Air Conditioning, INC. | Verona | WI | — | ◇ UNVERIFIED |
| GFGlobal Fabricators | Bakersfield | CA | — | ◇ UNVERIFIED |
| GOGlobal Opportunities, Inc. | Oklahoma City | OK | — | ◇ UNVERIFIED |
| GRGlobal Refrigeration INC | Honea Path | SC | — | ◇ UNVERIFIED |
| GMGmi Mechanical INC | Westminster | CO | — | ◇ UNVERIFIED |
| GHGoff Heat & Cooling | Kirbyville | MO | — | ◇ UNVERIFIED |
| GMGold Medal Service, INC. | East Brunswick | NJ | — | ◇ UNVERIFIED |
| GHGomez Heating & Air Inc | West Palm Beach | FL | — | ◇ UNVERIFIED |
| GMGonzales Mfg CO | Gonzales | TX | — | ◇ UNVERIFIED |
| GCGoodman CO LP | Fayetteville | TN | — | ◇ UNVERIFIED |
| GMGoodman Manufacturing Furnace Plant | Houston | TX | — | ◇ UNVERIFIED |
| GMGoodman Mfg. CO. L.p. | Houston | TX | — | ◇ UNVERIFIED |
| GSGoodman Seamist Plant | Houston | TX | — | ◇ UNVERIFIED |
| GCGorilla Coatings | San Leandro | CA | — | ◇ UNVERIFIED |
| GCGovernair CORP / 4841 N Sewell Air Conditioning Mfg Fac | Oklahoma City | OK | — | ◇ UNVERIFIED |
| GIGutterglove INC | Roseville | CA | — | ◇ UNVERIFIED |
| HVHalla Visteon Climate Control Alabama CORP. | Shorter | AL | — | ◇ UNVERIFIED |
| HCHardwood Creations | Woodland | CA | — | ◇ UNVERIFIED |
| HMHarris Mechanical Services LLC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| HCHart & Cooley, INC | Sanger | CA | — | ◇ UNVERIFIED |
| HCHart & Cooley, INC. | Englewood | OH | — | ◇ UNVERIFIED |
| HHHastings Hvac INC Cold Storage | Hastings | NE | — | ◇ UNVERIFIED |
| HEHdt Expeditionary Systems INC (esg) | Geneva | OH | — | ◇ UNVERIFIED |
| HWHeatcraft Worldwide Refrigeration | Danville | IL | — | ◇ UNVERIFIED |
| HCHedges Creek Business Center | Tualatin | OR | — | ◇ UNVERIFIED |
| HIHeeger INC | South El Monte | CA | — | ◇ UNVERIFIED |
| HEHfc Enterprises, Ltd, L.p. | Covina | CA | — | ◇ UNVERIFIED |
| HPHigh Performance Heat Treating | Huntington | WV | — | ◇ UNVERIFIED |
| HVHigh Velocity INC. | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| HBHillerich & Bradsby CO. INC. Sports Products | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| HHillphoenix | Covington | GA | — | ◇ UNVERIFIED |
| HHoneywell | Englewood | CO | — | ◇ UNVERIFIED |
| HIHoneywell International, INC. | Murfreesboro | TN | — | ◇ UNVERIFIED |
| HLHoneywell Lng Dock Street | Palmetto | FL | — | ◇ UNVERIFIED |
| HCHoover Containment INC | Mira Loma | CA | — | ◇ UNVERIFIED |
| HEHopsco Energy Products, LLC | Middle Point | OH | — | ◇ UNVERIFIED |
| HEHoward's Engineering | Pico Rivera | CA | — | ◇ UNVERIFIED |
 Hughes Circuits INC Dba Hp Precision | San Marcos | CA | — | ◇ UNVERIFIED |
| HMHuntingdon Mechanical Contractors, INC | Willow Grove | PA | — | ◇ UNVERIFIED |
| HAHurley and David | Springfield | MA | — | ◇ UNVERIFIED |
| HCHussmann CORP | Montgomery | AL | — | ◇ UNVERIFIED |
