macroair technologies llc (u.s. company) - the original designers and manufacturers of high volume low speed (hvls) fans. macroair continues to lead the industry in quality, workmanship, and innovative designs. macroair's airvolution and maxair hvls fans provide optimum cooling as well as heat de-stratification. key markets served: manufacturing & production, warehousing & distribution. commercial, agriculture, equine, crop cooling/storage.