Over the last few years we have seen a huge proliferation of different brands of air compressors available to industry and to the home or small shop DIY compressor users.
It would be good if all air compressor brands had varied channels to market, and those channels would have an understanding of air compressors and how they work, and they both supported the brand with repairs and provided the supply of parts for that air compressor. Unfortunately, many of the air compressors on the market today are sold by stores with staff that have no knowledge of how air compressors work, and they stock virtually no spare parts for the upkeep of their air compressor lines.
Maybe there is something particular about a specific brand of air compressor that you need some help with? Visit the page about your brand of air compressor listed below. There, you can read other visitor's reports on this brand (also see the troubleshooting section for issues common to many brands of compressors please), and here you can post a question or comment there about that specific brand of compressor.