| 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 |
| GTGooch Thermal Manufacturing, INC. | Fogelsville | PA | — | ◇ 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 |
| GFGratton Fabricating & Welding, INC. | Adamsburg | PA | — | ◇ UNVERIFIED |
| GEGsc Enterprises INC | Mansfield | OH | — | ◇ 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 |
| HCHarsco Corp/east Stroudsburg Plt | East Stroudsburg | PA | — | ◇ UNVERIFIED |
| HIHarsco Industrial Hammco, LLC | Owasso | OK | — | ◇ UNVERIFIED |
| HCHart & Cooley, INC | Sanger | CA | — | ◇ UNVERIFIED |
| HCHart & Cooley, INC. | Englewood | OH | — | ◇ UNVERIFIED |
| HHHastings Hvac INC | Hastings | NE | — | ◇ UNVERIFIED |
| HHHastings Hvac INC Cold Storage | Hastings | NE | — | ◇ UNVERIFIED |
| HEHdt Expeditionary Systems INC (esg) | Geneva | OH | — | ◇ UNVERIFIED |
| HWHeatcraft Worldwide Refrigeration | Danville | IL | — | ◇ UNVERIFIED |
| HTHeat Transfer Equipment CO. | Tulsa | OK | — | ◇ 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 |
| HGHouston Global Heat Transfer LLC | Humble | TX | — | ◇ 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 |
| HCHussmann CORP | Chino | CA | — | ◇ UNVERIFIED |
| HCHussmann CORP. | Sacramento | CA | — | ◇ UNVERIFIED |
| HCHussmann Corporation | Independence | MO | — | ◇ UNVERIFIED |
| HCHussmann Corporation | Sacramento | CA | — | ◇ UNVERIFIED |
| HCHussmann Corporation-gloversville | Gloversville | NY | — | ◇ UNVERIFIED |
| HCHussmann Corporation Site | Seattle | WA | — | ◇ UNVERIFIED |
| HCHvac Cycle LLC | Jackson Heights | NY | — | ◇ UNVERIFIED |
| HMHVAC Mechanical LLC | New Baltimore | MI | — | ◇ UNVERIFIED |
| HCHwh Corporation | Moscow | IA | — | ◇ UNVERIFIED |
| HCHydac Cooling Systems (denver, Nc) | Denver | NC | — | ◇ UNVERIFIED |
| HPHydra Power Hydraulics INC | Savage | MN | — | ◇ UNVERIFIED |
| HHydratech | Fresno | CA | — | ◇ UNVERIFIED |
| HRHydraulic Rod Pump INC | Foothill Ranch | CA | — | ◇ UNVERIFIED |
| HSHydraulic Solutions and Supplies LLC | Ontario | CA | — | ◇ UNVERIFIED |
| HSHydraulic Specialty, INC. | Minneapolis | MN | — | ◇ UNVERIFIED |
| HAHydro Aluminum Bohn Puckett | Puckett | MS | — | ◇ UNVERIFIED |
| HIHydrodyne, INC. | Massillon | OH | — | ◇ UNVERIFIED |
| HPHye Precision INC | Anaheim | CA | — | ◇ UNVERIFIED |
| HHHypower Hydraulics INC | Turlock | CA | — | ◇ UNVERIFIED |
| ILIaire, LLC | Indianapolis | IN | — | ◇ UNVERIFIED |
| IMIce Machines International INC | Myrtle Beach | SC | — | ◇ UNVERIFIED |
| ICI C Refrigeration Service INC | Gridley | CA | — | ◇ UNVERIFIED |
| IAIcy A/c INC. | Corpus Christi | TX | — | ◇ UNVERIFIED |
| ICIdeal Comfort Heating and Air Conditioning LLC | Springfield | MO | — | ◇ UNVERIFIED |
| IHIdyllwild Heating & Cooling, Inc. | Idyllwild | CA | — | ◇ UNVERIFIED |
| ITImagine That | Santa Clarita | CA | — | ◇ UNVERIFIED |
| IWImetco West | Mcclellan | CA | — | ◇ UNVERIFIED |
| ICImi Cornelius INC | Anoka | MN | — | ◇ UNVERIFIED |
| IPImi Precision Engineering | Machesney Park | IL | — | ◇ UNVERIFIED |
| IHIndiana Heat Transfer CORP. | Plymouth | IN | — | ◇ UNVERIFIED |
 Industrial Air, INC. | Greensboro | NC | — | ◇ UNVERIFIED |
| IDIndustrial Distribution Corporation, INC. | Irving | TX | — | ◇ UNVERIFIED |
| IEIndustrial Equipment Solutions | Corona | CA | — | ◇ UNVERIFIED |
| IMIndustrial Manufacturing Solutions, LLC | Jennings | OK | — | ◇ UNVERIFIED |
| ISIndustrial Sheet Metal/trane | Rockingham | NC | — | ◇ UNVERIFIED |
| IVIndustrial Ventilation INC | Ontario | OR | — | ◇ UNVERIFIED |
| IGIngenium Group LLC - Transfer Facility | Kent | WA | — | ◇ UNVERIFIED |
| ICIngersoll-rand Company Dba Trane | Lexington | KY | — | ◇ UNVERIFIED |
| IRIngersol Rand | Panama City | FL | — | ◇ UNVERIFIED |
| IRIngersol Rand | Hastings | NE | — | ◇ UNVERIFIED |
| IHInka HVAC Inc | Woodbridge | VA | — | ◇ UNVERIFIED |
| IRInnovative Refrigeration Systems INC | Appleton | WI | — | ◇ UNVERIFIED |
| IRInnovative Refrigeration Systems, INC. | Harmony | PA | — | ◇ UNVERIFIED |
| IIInox, INC | Chatsworth | CA | — | ◇ UNVERIFIED |
| IEInter-city Engery Systems, INC | Ontario | CA | — | ◇ UNVERIFIED |
| ICInternational Comfort Prod INC | Lewisburg | TN | — | ◇ UNVERIFIED |
| ISInternational Shipyard LLC - Shipyard Facility | Larose | LA | — | ◇ UNVERIFIED |
| IWInternational West, INC Dba Continental Industries | Anaheim | CA | — | ◇ UNVERIFIED |
| IIntuitive | Sunnyvale | CA | — | ◇ UNVERIFIED |
| ITIrhythm Technologies | San Francisco | CA | — | ◇ UNVERIFIED |
| IMIron Mechanical | Corte Madera | CA | — | ◇ UNVERIFIED |
| IIIsotherm, INC. | Arlington | TX | — | ◇ UNVERIFIED |
| JBJ Boyd Real Estate, LLC | Sacramento | CA | — | ◇ UNVERIFIED |
| JMJdc Manufacturing | Redwood City | CA | — | ◇ UNVERIFIED |
| JSJeff Stinger | Fort Worth | TX | — | ◇ UNVERIFIED |
| JCJenny Carmona | La Mirada | CA | — | ◇ UNVERIFIED |
