I am working with a small fabrication shop that uses compressed air for grinders, blow-off, and some pneumatic tools. The system runs nearly all day, and the compressor is probably oversized, but they have no monitoring or audit history.
They are interested in making improvements but want to understand how much they might be losing before spending money on repairs or upgrades.
Are there any reliable ways to estimate air losses or inefficiencies using operating hours, pressure settings, or just basic observations? I am looking for practical first steps that can show value without needing high-end tools or a full system audit.
You can start with a few simple checks before investing in an audit. One of the easiest is to monitor compressor run time when no tools are in use if it still cycles on and off, that indicates leaks. Listening for hissing on fittings can also spot major losses. Tracking how quickly system pressure drops in the receiver tank with the compressor off is another way to estimate leakage. Finally, check if the pressure is set higher than needed each 2 psi above requirement adds ~1% to energy use. These low-cost steps can reveal if significant savings are possible before upgrades.