AIRMaster+ is a free online software tool that helps users analyze energy use and savings opportunities in industrial compressed air systems. Use AIRMaster+ to baseline existing and model future system operations improvements, and evaluate energy and dollar savings from many energy efficiency measures. AIRMaster+ provides a systematic approach to assessing compressed air systems, analyzing collected data, and reporting results.

The AIRMaster+ LogTool is a companion tool to AIRMaster+ that helps industrial users determine the operating dynamics of a compressed system. Use the LogTool first to gather critical data in preparation for AIRMaster+. Then, input that data into AIRMaster+ to model existing and future compressed air system upgrades.

Intended Users

AIRMaster+ is designed for personnel who are interested in improving compressed air system performance, including industrial plant engineers, distributors of compressed air equipment, consulting companies, and utility energy auditors.

System Requirements

AIRMaster+ will operate on the following PC's:

  • 32-bit computer running Windows 2000, Windows XP, Windows Vista, Windows 7, and Windows 8
  • 64-bit computer running Windows Vista, Windows 7, and Windows 8


To use AIRMaster+, first enter information describing existing inventory and function for the following:

  • Company/facility
  • Utility rates
  • Compressed air systems on site and end uses for each system
  • Typical operating day types
  • Compressor performance and operating details
  • Metered hourly energy use or air flow for each day type and for each compressor

Then, define proposed energy efficiency system enhancements such as:

  • Reduced air leaks, system air pressure, or run time
  • Improved end use efficiency
  • Use of unloading controls and automatic sequencer
  • Adjustment of cascading set points
  • Addition of primary receiver volume


Based on input, AIRMaster+ allows users to:

  • Manage multiple facilities and compressed air systems
  • Maintain databases of plant inventory and industry-standard air compressors
  • Simulate existing and modified compressed air system operation
  • Model part load system operation for a variety of air compressors operating simultaneously with independent control strategies and schedules
  • Calculate electrical operating costs and life cycle costs
  • Evaluate energy savings
  • Track maintenance histories of various facility, system, and compressor components

Release Notes

Version 1.2.7 replaces earlier versions of AIRMaster+ and corrects errors regarding Company files being saved; Company files are now written to each user's local interface under "My Documents" for all Microsoft operating systems Vista and higher.

Additional Information

AIRMaster+ Qualification

DOE and the Compressed Air Challenge® recognize Qualified AIRMaster+ Specialists for their ability to use the AIRMaster+ software effectively with industrial end users. Used properly, AIRMaster+ is a powerful tool for modeling "what if" scenarios for possible improvements to compressed air systems. A Qualified Specialist can apply AIRMaster+ to assist you in identifying system improvement opportunities. More details on AIRMaster+ qualified specialists.