Plant engineering calculator · Updated 17 September 2026
Compressed Air Leakage Percentage Calculator — Load/Unload Test & Cost
Estimate leakage fraction from compressor load/unload timing during a no-production test, then convert leakage flow into annual energy and cost using specific power.
Inputs
Live results
- Leakage 20.0%
- Leak flow 100.0 CFM
- Leak power 18.0 kW
- Annual energy 108000 kWh
- Annual cost 12960
Formula and method
leak%=Tload/(Tload+Tunload); Qleak=capacity×leak%.
Worked example
A compressor loaded 2 min and unloaded 8 min during a no-production test indicates about 20% of capacity as leakage under the test assumptions.
Assumptions and limits
- Test should be performed with production air demand isolated or known.
- Controls, receiver volume and pressure band must be stable enough for the timing method.
Frequently asked questions
What does this Compressed Air Leakage Percentage Calculator calculate?
Estimate leakage fraction from compressor load/unload timing during a no-production test, then convert leakage flow into annual energy and cost using specific power.
Is this suitable for final design?
Use it as a transparent engineering screen. Verify final decisions against measured data, OEM curves, applicable standards and site operating limits.
Why are assumptions visible?
Plant calculations can look precise while hiding uncertain inputs. MAXScanner keeps the governing assumptions visible so scenarios can be checked and compared.