| E.K. Campbell - Industrial Direct/Indirect Fired Heating/Ventilating Equipment | McClintock & Bustad, Inc. |
| Eaton/Cuttler-Hammer - VFDs | J.D. Sales Co., Inc. |
| Eco-Air - Filtration Products & Housings | Toro-Aire, Inc. |
| Edwards-Htg/Cooling Sys. | J.D. Sales Co., Inc. |
| Electric Duct Heaters (Delta Flo) | Airelink Products Corporation |
| Evaporative Direct/Indirect Coolers, Air Handling Units | DMG Corporation |
| ENERGY LABS INCORPORATED | DMG Corporation |
| ENGLEHARD/ICC - Desiccant AHU | Southern Ca A/C Distributors |
| Enviro-Tec - Air Handling Units | Engineered Comfort Systems |
| Essick - Make-Up Air Unit, Evaporative Coolers | McClintock & Bustad, Inc. |
| Evapco Cooling Towers - BAC, Evapco, Marley | Air Treatment Corporation, Dockendorf, W.G., Inc., Marley Company |
| Evaporative Condensers - BAC, Evapco, Marley | Air Treatment Corp, Dockendorf, W.G., Inc., Marley Company |
| Evaporative Cooling Equipment Repair & Retrofit | K.H. Watts Company, Inc. |
| Evaporative Coolers (Arctic Circle) | Airlink Products Corporation |
| Evaporative Coolers, Direct & Indirect - Des-Champs Labs, Gaylord | Air Conditioning Specialities Co. |
| Evaporative Cooling - Custom (United Metal Products) | Air Treatment Corp. |