AIR SUPERIORITY

The company that invented the HVLS fan has created the next generation. Introducing AirVolution-D. Take a look at the side-by-side comparison between the new AirVolution-D and conventional HVLS design. You’ll see the advantages in power, efficiency, intelligence, and reliability at every turn. Read more…

MACROAIR Fans are 100% gearless.
Goodbye to loud, leaky, friction-filled gearboxes.
Goodbye to up to 240lbs of useless weight. And goodbye to mainenance. MACROAIR is the first and only 100% gearless HVLS fan company. Read more…

When air is moved, small, repetitive pressure disturbances are imparted to the air. When these pressure disturbances are sensed by a hearing mechanism (your ear), sound is created. When the receiver of sound deems it undesirable, we call it noise. Perception of sound and sound quantification ranges from ‘voodoo’ or ‘black magic’ to a perfect science by acousticians…will suffice to say I am somewhere in-between. Only definitions and basics of sound will be covered here. Read more…

Fan types vary by application and performance characteristics.  The fan construction consists of drive arrangements, fan rotation and discharge, class of construction, spark resistance and special coatings and materials.  For this reason, when selecting a fan the motors, v-belt drives and inlet vanes need to be considered.  Read more…

Fans in actual systems are often less than ideal. When an installation produces airflow that is not uniform, the fan’s performance will be measurably reduced. The difference in performance for the same fan tested in both conditions is the “System Effect.” In other words, anything that is placed in close proximity before or after the fan that effects the catalogued performance. System Effect Factors (SEF): A factor used to correct for system induced installation effects.
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