Compressed air is one of the most useful power sources in the plant environment. It is often used for driving and operating pneumatic equipment and tools, critical machinery and processes, and conveying products or drying parts. Compressed air has been integrated to all areas of manufacturing. It can be one of the most costly, most important and most inefficient systems in the plant environment. With in depth knowledge and state of the art measuring equipment, we can quantify the key components of the compressed air system. Demand flow, power consumption, pressure profile, and leakage rates are key measures that when recorded can give great direction to action on improvements.