| Waffle - Crete TES Tanks | J.D. Sales Co., Inc. |
| Water Level Controls - AquaFloat | K.H. Watts Company, Inc. |
| Water Softeners | Parker Boiler Co. |
| Water Source Heat Pumps - CHP, Trane, FHP |
DB Sales & Service
The Trane Company K.H. Watts Company |
| Water Treatment, Non-Chemical - Ozonex | Weil Aquatronics |
|
Weather-Rite - Industrial Direct/Indirect Fired Heating and
Ventilating Equipment |
McClintock & Bustad, Inc. |
| Weben-Jarco - Water Heaters | Peter Vandervorst & Associates |
| Weil McLain Boilers | Heat Technology Products |
| Weksler - Gauges & Thermometers | Dawson Co. |
| Welding Vent Systems (Vent-Aire) | Airelink Products Corporation |
| Woods T.B. - V-Belt Drives | Sausse M.W., & Co., Inc. |