Compressor cleaning chemical should give more power recovery on-line than demineralised water. The crucial factor is the injection system. As the dwell time for cleaning chemical on-line is very short, it must therefore be presented to the compressor in the right way and condition. The position of the injection system and the size of the fluid droplets is also important. Most off-line systems are not positioned correctly for on-line washing, nor do their injection nozzles give the correct droplet size for on-line cleaning. The result of washing with these is that there is no gain in efficiency by using compressor cleaning fluid over demineralised water. If you have this problem and are serious about on-line cleaning, consider adding a dedicated on-line cleaning system.