Eaton Compressor & Fabrication is an air compressor company headquartered in Ohio that ships compressors across the United States under the Polar Air brand. The company offers electric rotary screw compressors available in single, dual, or three-phase models with options like variable speed drives. Eaton's recently redesigned Nex-Gen rotary screw compressor uses new air ends and sound insulating cabinets. Rotary screw compressors, used for industrial purposes, compress air using two helical rotors that trap air as they turn. They are efficient and largely noiseless due to continuous compression.