Variable Speed Drive (VFD) Air Compressors can be very efficient when sized correctly. VFD Air Compressors match the compressor output with the demand by varying the electric motor speed, this turndown reduces the amount of utility used by the electric motor.
We recommend installing the VFD where the demand would fall between 30-80% of full load. When the compressor runs light, moisture could build up in the airend, causing premature failure. When the compressor runs to heavy, your defeating the purpose of the VFD as each drive requires an additional 7-8% above the compressor to operate.
Talk to a compressed air specialist to help size your VFD air compressor! Call one of our sales agents for additional support and service.