The previous technology of centrifugal fan is  higher loss in the fan due low efficiency .This EC fan modification can save you more money 30-50% and reduce the maintenance cost for free because of no belt and bearing to take care .The EC fan built-on board VSD and controller  inside the motor get the signal from the temp. or pressure sensor to control the speed of drive.In addition, we can enhance the  communication Modbus  to send the signal and data to web application and controlled  by mobile phone for showing and controlling speed of fan and monitoring significant parameters e.g. speed of fan ,motor temperature , electrical current ,vibration and noise  level for optional.

         Payback period wise escalate by 2-4 years depend on the airflow and static pressure of fan.Any energy saving project or inquiry, please contact us at 089-779-4884.