Our flagship line, these 6-blade fans were developed from our original 10-blade line (some of which are still available). More efficient and easier on the environment than their 10-blade brethren, these fans move a lot of air slowly and gently to cool animals, people and equipment for pennies an hour. And they make winter heating more efficient with standard reversible motors & blades. Article 15 compliant out of the box, Airvolution™ and Maxair™ HVLS fans solve a wide variety of cooling, heating, and ventilation challenges. The 1HP Airvolution™ series was developed to cool spaces gently, while the 1½ & 2HP Maxair™ line is perfect in larger areas where some turbulence is OK, floors need to be kept dry, etc.