CAGI Data Sheets: Comparing Air Compressor Performance

CAGI Data Sheets are compressor performance sheets that allow air users to compare the efficiencies of different compressors in a standardized format. Only CAGI member companies can utilize these sheets to present performance data. Most of the critical measures that aid the understanding of compressor performance are documented on these sheets and, most importantly, are verified by an independent third party administrator.

With CAGI sheets, consumers now have a standard way to compare compressor performance and the independent verification process provides assurance that the numbers are accurate.

CAGI Data Sheets should not be considered an all-encompassing feature/benefit comparison for compressors. The Fixed Speed Data Sheets only report performance at the compressor’s full flow capability (this is also known as full load). Because air requirements in a plant typically vary throughout the day, compressors often produce air at levels below their full load capability. To understand the efficiency of a compressor during part load periods, you should work with a compressed air salesperson.

Utilizing the data sheets is the fun part. For ease of comparison, every data sheet for similar types of compressors is organized in the same way. At the top of the sheet, you will find the type of Rotary Compressor: fixed speed or variable frequency drive. Note that for fixed speed compressors, all data assumes the compressor is operating at full load, so it is important to take into account how your unit will be operating (for assistance, see your compressed air sales expert).

Download our cheat sheet for a line-by-line description of the data that is on each line of a CAGI Data Sheet, what the data means and how to make use of the information. Once you are familiar with the contents of a Compressor Data Sheet, comparisons become quick and easy, requiring just a few minutes to identify important differences.