Air compressors come in many variations. All of which serve different purposes and functions. Listed here are 3 air compressor types, available from Ingersoll Rand and a brief overview of their features. Small Rotary Screw Air Compressors Available in 4-37 kW (5-50 hp) sizes. Air compressors in this category are much quieter than the larger models. High energy efficiency is also a feature of the smaller size, as well as the extra portability over static models. Medium Rotary Screw Air Compressors Available in 37-45 kW (50-60 hp) sizes. These compressors are suited for larger jobs than the small models, while maintaining the efficiency and ease of use. Large Rotary Screw Air Compressors Available in 200-250kW...