Altorfer Cat’s oil-free compressed air rental units provide 100% oil-free air, with no danger of system problems or damage to work in process. Build with fewer components, their simplified design offers premium performance and minimal maintenance. Oil-free air compressors are ideal for use in clean rooms and other sensitive environments. Even the best-lubricated compressors can admit some degree of oil contamination into their air outputs. Oil-free compressors solve this problem, making them suitable for use around sensitive machinery and in food and beverage, pharmaceutical and other applications.