Yavatmal Co-operative Urban Bank, Yavatmal, India.

A Case Study : Epoch HVLS 10-ft Fan By Falco eMotors Inc.
Report No. 040620-02



  1. Yavatmal Bank is a well known bank in the city of Yavatmal and there are accounts of many peoples from city.
  2. The temperature in Yavatmal during summer is too high. So the customers of bank not feel comfortable.

  3. Bank didn’t have any type of air movement in the open space.




  • Epoch 2.0, 10-ft Fan was installed with the following specifications ;
    • Motor: Epoch 1.0;
    • Coverage Area: 6000 Sq. Ft. (1114 Sq. m);
    • Speed: 160 RPM;
    • Peak Power: 1.1kW/1.5 hp;


Site Survey:

A site survey is mandatory before any HVLS fan recommendation. The survey revealed the following dimensions:

  • Total Area: 30 ft x 30 ft = 900‬ Sq. ft.,
  • Floor to Ceiling Distance: 14 to 16 Ft,
  • By a rule of thumb distance/1.5 gives us the approximate fan diameter. 
  • In this case, we chose to go with a 10-ft fan.


Fan and Coverage Area:


Test Reports:

Three test reports are collected for each fan installation as follows:

  1. Power Consumption Report;
  2. Input Current Report;
  3. Air Flow Report.

Those reports are shown for this site:


Power consumption report captures the real as well as apparent power. Epoch HVLS fans are the only fans in the world to have active power factor correction and unity power factor. Therefore the Watts (Real Power) and VARs (the apparent power) are almost the same. The power has been captured at 100, 110, 120, 130 and 140 RPM. Power drawn at those speeds are 300, 420, 590, 710 and 890W respectively. The chart above also shows trend lines generated using Excel for real and apparent power to take into account any measurement errors as fan power consumption can be modeled by well known equations.


The input current is also measured at 100, 110, 120, 130 and 140 RPM. Input current is recorded as 0.8, 1.9, 2.5, 3.6 and 4.6A respectively. The input voltage varied from 230 to 240V during the measurement. 


The airflow is measured from the center of the fan and is recorded at every 3-ft distance. Values were recorded upto 30-ft from the center of the fan. The values were respectively, 130, 180, 220, 360, 440, 390, 350, 320, 275 ft/min at distances of 3,6,9,12,15,18,21,24, and 27-ft respectively.


Estimated Yearly Savings while Using Epoch HVLS Fans


Epoch 10-ft fan was compared against Indian HVLS fan Manufacturer. Based on their data sheet, daily, monthly and yearly power consumption and costs were calculated. An Epoch HVLS fan will save the end user anywhere from $82 to $510 per year over any competitive brands because of its unique technology.

 Finished Installation:


Above is the picture of the finished installation.