No need of oil and thus lesser maintenance; no need of oil removing filter, which is a recurring cost; made to run continuously; being air cooled compressor this eliminates the need of water pipe lines, cooling towers and water pumps and maintenance of water cooled coolers, scaling, etc. So far since other oil free compressors available are water cooled, this require separate foundation for compressor, motor and vertical air tank; whereas these air cooled oil free compressors are installed on shop floor directly without any foundation bolts and thus it may be shifted to any place (if need arises) without any additional cost.