Buy used air compressors on EquipNet.com, MachineryTrader.com or eBay.com. Each of these sites has a variety of used air compressors, including cast iron, commercial, skid mounted, twin, commercial, and scratch and dent.
Equip.net lists sells a selection of used air compressors from a variety of manufacturers, including Ingersoll Rand, Clark and Joy Manufacturer. Prices are listed, but shoppers have the option to make offers on equipment. MachineryTrader.com has used air compressors available for auction. Each listing contains various types of information about the compressor, including stock number, hours used, condition and opening bid price. eBay.com features modern and vintage air compressors for auction or immediate purchase.