CFM/Thrust
What does the AMCA rating mean? First, the definition of CFM is, “Cubic Feet per Minute”. It is a measurement of volume over time. The higher the CFM number, the higher the volume or capacity. CFM has been used to quantify the performance of high speed fans for many years.
Second, the AMCA approved method of measuring the performance of HVLS fans is to measure the “thrust” which is the force the fan produces as a result of the air being pushed through it. The higher the thrust value, the higher the volume of air or performance. A formula can be used to convert from thrust to CFM but the results are only certifiable for 8 feet and below. Thrust values are used to certify fans above 8 feet.
To our knowledge, MacroAir Technologies is the only HVLS fan company to obtain certified ratings from A.M.C.A., The Air Movement and Control Association. Visit the A.M.C.A. website at www.amca.org to learn about this international organization and how they measure and certify air movement.
To view our Certified Catalogs click on the images below.
MacroAir makes an earnest effort to represent the performance of its fans accurately. When you compare the performance of our Airvolution and MaxAir lines you will see a consistent and logical progression of air performance based on horsepower, fan design and size. The chart below shows a simple comparison of our certified CFM values, and additional CFM values converted from certified thrust values just for ease of comparison. Looking at the comparison, MacroAir versus others, you will see there is a broad swing in how manufacturers report fan sizes and airflow performance. Please note the thrust values for the MacroAir 10 and 12 foot fans are AMCA certified. The CFM values are AMCA certified for the MacroAir 8 foot fan. If thrust values were available from any other manufacturer then a thrust to thrust comparison would be shown. Again, we are the only HVLS fan company with certified ratings. If you have any questions regarding our air performance data please call us and we will be happy to explain how the certified numbers are derived.
