The expanding foam action of the TFC-100 is one of the most powerful weapons you can use against the dirt and biological build up on cooling towers. Although it will make deposits disappear right before your eyes, the secret behind this unit's penetrating cleaning power is not magic. It's the integrated continuous-duty air compressor that enhances the expansion of Goodway's environmentally sensitive cleaning solution, to loosen and rinse away deposits from the tightest crevices. The unit's powerful spray gun and custom extension wands and nozzles allow you to penetrate all the hard-to-reach areas of your cooling tower. This enables you to apply 100% Goodway cleaning solution, a combination of solution and water, or just water for powerful rinsing action.