Compressed air is one of the most expensive utilities in an industrial facility — yet many operators don’t fully understand its cost or efficiency potential. That’s where a compressed air system analysis can make a powerful difference. Whether conducted by a utility, manufacturer, or independent consultant, a well-executed analysis can uncover hidden inefficiencies and chart a path to significant savings.
The Compressed Air Challenge (CAC) teaches that both supply and demand sides of the system must be evaluated. This includes analyzing compressor performance, air treatment components, storage, piping, and end-use equipment. Key measurements typically include airflow (cfm), power consumption (kW), pressure levels, and leak detection. The goal is to provide a clear picture of how much energy your system uses — and wastes — on a daily basis.
A good analysis should be system-neutral and commercially impartial, especially when provided by independent auditors. Recommendations should be based on what’s best for the user and not tied to a specific equipment brand.
There are two primary types of assessments:
- Basic assessments can often be completed by trained in-house personnel or service providers. These assessments use limited measurements and readily available data to spot issues such as inappropriate uses of compressed air, significant leaks, or unstable system pressures. Even without detailed monitoring, basic assessments can lead to energy savings of 25% or more.
- Comprehensive audits go much deeper. Performed by experienced compressed air auditors, these audits involve detailed data logging, demand and pressure profiling, leak evaluation, control strategy reviews, and end-use analysis. The auditor develops a complete picture of how the system operates under real conditions and provides a full written report with recommended improvements.
One key takeaway? Fixing leaks alone won’t help unless your compressor control strategy is capable of adjusting output accordingly. That’s why a system-wide approach is critical.
The CAC offers guidelines and training to help plant personnel better understand system dynamics and evaluate service providers. For those new to the topic or seeking to build internal capability, the CAC’s Fundamentals of Compressed Air Systems seminar — offered in-person or as a live web edition — is a great place to start.
Take the first step toward better performance and lower energy costs. Visit compressedairchallenge.org to learn more about upcoming seminars and download resources on compressed air system assessments.
