Published at Monday, August 20th 2018, 14:21:43 PM by Mia Leach. Air Compressor. Oil free systems are a bit more technical so sometimes are more expensive. Often they are louder than an oil lubed compressor, but the air delivered through one of these pumps is of a better quality. They are found for home use, and are great because they are low maintenance and start up quick in cold weather.