Below is a list of Air Compressor Filters manufacturers from St-Leonard D'aston, Quebec. Air compressor filters, or compressed air filters, are essential elements to air compression systems, by removing water, oil, dust, vapors and other contaminants from a compressed air supply, filters prolong the useful life of the compressor and its applications. Air compressors are machines that decrease the volume of a given quantity of air thus compressing it for directed use in many applications.