You must go beyond initial cost when evaluating compressed air systems. During the first year, operating costs for compressed air can be 1.5 to 2.5 times the initial purchase price of the equipment. Efficiency of the compressor and the overall system efficiency are critical.
Electrical expense
As much as 70% of compressed air cost is electrical.
Analyze the total cost of a compressed air system and you'll realize that power cost is significant. In just one year it could exceed the cost of the compressor itself. Over a period of ten years, this could consume 70% of your overall costs. That's why it's important to investigate energy efficiency when considering a new compressor.
Cooling cost
If you are considering air-cooled compressors, factor in the electricity used to run cooling fan motors. If evaluating a water-cooled system, consider the quantity and required quality of the water, as well as treatment, electrical, and disposal costs.
Installation
The equipment you select directly impacts installation costs. It’s common for buyers to build separate rooms or structures to isolate noisy, vibrating compressors from employees and customers for the sake of safety and comfort. When selecting equipment, it is always a good idea to review the sound pressure level, general environmental requirements, such as air intake and discharge, and general electrical requirements of the equipment. Choices in piping also impact installation time and labor.
Maintenance costs
The easier the system is to maintain, the more you save in the long run.
Leaks and unnecessary demand
The U.S. Department of Energy estimates 25% of compressed air is lost to leaks.
Any leaks in your system will add to your operating costs. Unnecessary use of compressed air is wasteful and expensive.
Reliability
An unreliable compressed air system can be disastrous to the bottom line. You can never make up lost production days.