You Think Your Air Curtain Is Working. Is It Really? Here's what happens most of the time. Most factory owners and facility managers install an air curtain, flip the switch, and walk away and they thought good about it. Job done, right? Nut this much is not enough. That air curtain running at full blast at 2 AM — with zero foot traffic, zero open doors, and zero reason to operate — is silently bleeding your energy budget dry. And most people have absolutely no idea it's happe