Energy Academy
System Design & Optimization6 / 13

Leak Detection & Sealing

How leaks waste energy, ultrasonic detection, ROI of leak repair.

10 min read · Jacob Willis, Net Zero Lead · Last reviewed July 2026


On a compressed air system that has never been surveyed, leaks are not a detail; they are commonly the largest single consumer of air on site. Industry guidance from the Carbon Trust and BCAS consistently puts leakage on unmanaged systems at 20 to 30% of everything generated, and every leaked litre was compressed at full cost before it escaped. The economics of finding and fixing leaks are among the best in energy management, and this lesson covers how to price them, find them and keep them fixed.

In this lesson

  • 01What a hole costs
  • 02Finding them
  • 03Fixing, tagging, repeating
  • 04Sources and further reading