Industrial Fans, Blowers & Air Movement Equipment worked example

Noise Estimate with sound impact score of 18 score: a worked example

This scenario runs the noise estimate calculation on the strong side: sound impact score of 18 score, with every other input held at its documented default. Use it when reviewing fan sound level risk for a quote, test plan, enclosure, silencer, or customer acceptance requirement.

The inputs for this scenario

  • Sound impact score: 18 score (raised for this scenario; the documented default is 7)
  • Noise occurrence score: 4 score (unchanged)
  • Noise control weakness score: 3 score (unchanged)

Working through the calculation

  • Applying the documented formula (Noise risk score = sound impact score × 0.40 + noise occurrence score × 0.35 + noise control weakness score × 0.25) to the inputs above produces each figure below.
  • At this operating point the engine returns 9.35 score for noise risk score, the number this scenario is built around.
  • At this operating point the engine returns 18 score for sound impact score.
  • At this operating point the engine returns 4 score for noise occurrence score.
  • At this operating point the engine returns 3 score for noise control weakness score.

How this compares with the baseline

  • Against the tool's baseline example, where sound impact score sits at 7 score and the headline result is 4.95 score, this scenario comes in 88.89% above the baseline at 9.35 score.
  • Use it to prioritize fans and blowers for noise mitigation or to screen a fleet before committing to silencers, enclosures, or relocation. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Noise risk score: 9.35 score (headline result)
  • Sound impact score: 18 score
  • Noise occurrence score: 4 score
  • Noise control weakness score: 3 score

Run it with your numbers

  • Every input above is editable in the live Noise Estimate calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.