| 3M | National Comfort Institute (NCI) |
| AC Pro | NEBB |
| Action Duct | North American Technician Excellence (NATE) |
| Aeroseal, LLC | Olimpia Splendid U.S.A |
| A-Gas | Orcatec LLC |
| Air Scrubber by Aerus | Pacific Systems Group |
| Airex Manufacturing | Packard |
| Airzone North America | PHCC Los Angeles Training |
| Albritton Company | Panasonic Life Solutions |
| Ambro Controls | Parker Hannifin – Sporlan Division |
| American Coil | Particles Plus |
| Alliance Environmental | Profit Rhino Powered by Callahan Roach |
| Allied Restoration Services, Inc. | R.E. Michel Company |
| Arzel Zoning Technology, Inc. | Rahn Industries |
| Aspen Manufacturing | Rapid Duct Testing |
| Brownson Technical School | Resideo |
| CalCERTS, Inc. | Robertshaw |
| CHEERS | Rodman Tools |
| Coilmen Plus/Modine Electrofin | Rotobrush International |
| College of the Desert | Rottiers Sales |
| Commercial Van Interiors | Royal Service Supplies |
| Danko Mechanical Sales Company | Royal Truck Body |
| Denco | RSES/CARSES |
| Dwyer Instruments LLC | Sealed Unit Parts Co. |
| Delta 4 Environmental, Inc. | |
| Eagle X Pro | Sigler, Inc. |
| El Camino College | simPRO |
| Emerson-White Rodgers | Sirris Abatement |
| Energy Code Ace | So Cal Gas |
| Energy Masters | So Cal Sheet Metal Apprenticeship Local 105 |
| ESCO Institute & HVAC Excellence | Soleus Air |
| Evergreen Telemetry | So Cal Edison Energy Education Center |
| Ferguson HVAC | Southern California Pipe Trades |
| Fieldboss | Style Crest, Inc.- Revolv |
| Fieldpiece | TapeGuys.Com |
| Flaretite | TECH Clean California |
| Fluorofusion Specialty Chemicals | Testo North America |
| Geary Pacific Supply | Thermaflex |
| Global/HVAC Master Distributor | TruTech Tools, LTD |
| GoGreen Financing | TSI Incorporated |
| GREE | Uniweld Products, Inc. |
| HERS Raters, LLC. | US Air Conditioning Distributors |
| Howard Industries | Vanderbilt Mortgage and Finance |
| INABA DENKO, A Division of PATLITE (U.S.A.) Corporation | Ventamatic, LTD |
| iPermit ERaters | Visual Service by IHACI (VS) |
| J.B. Warranties | Walter’s Mercedez-Benz Sprinter of Riverside |
| Kwik Model 3D | Wright Sales |
| LG Electronics USA | ZONEFIRST Zone Controls |
| L.H. Dottie | |
| Mainstream Engineering | |
| MarketAir | |
