The PurAir electric drive variable frequency compressor adopts high and new technology, which can automatically adjust the motor speed according to the change of air demand, with an average energy saving of 30% or more. The operation and maintenance cost of the PurAir electric drive variable frequency air compressor is lower, it is more environmentally friendly, and has the advantages of robustness, reliability and durability. The high-capacity two-stage air filter greatly reduces the replacement frequency of the air filter element, enabling it to operate continuously and stably under the ambient temperature of - 25 ℃ to 45 ℃.