Answering the “Do I need a dryer?” question is typically easy. Pretty much every compressed air system needs a dryer. The question of “Which dryer do I need?” is more complex. The answer starts by knowing the ISO air quality classes and where in the spectrum your needs fall. Your needs will be determined by your equipment and processes that utilize compressed air. UEC also offers dryers, both desiccant and refrigerated, from Gardner Denver, Great Lakes, SPX and Nano.