In the several years I worked on a non-climate controlled manufacturing floor, we never replaced the cardboard in our evaporative coolers[0]. We added a quatern

In the several years I worked on a non-climate controlled manufacturing floor, we never replaced the cardboard in our evaporative coolers[0]. We added a quaternary amine-based cleaning agent every so often to knock out the mold. 0: https://www.mcmaster.com/2073K37/ https://www.mcmaster.com/2073K37/