Industrial Fans, Blowers & Air Movement Equipment worked example

Warranty Risk with field impact severity if the fan fails in service of 20 score: a worked example in industrial fans, blowers & air movement equipment

Push field impact severity if the fan fails in service up to 20 score and the picture changes. This example computes every intermediate figure at that operating point. Use it when reviewing bearing failures, vibration complaints, motor issues, coating defects, noise claims, or airflow performance risk.

The inputs for this scenario

  • Field impact severity if the fan fails in service: 20 score (raised for this scenario; the documented default is 8)
  • Likelihood this warranty failure mode occurs: 4 score (unchanged)
  • Inability to detect the defect before shipment: 3 score (unchanged)

Working through the calculation

  • Applying the documented formula (Warranty risk score = field impact score × 0.40 + expected warranty occurrence score × 0.35 + warranty detection weakness score × 0.25) to the inputs above produces each figure below.
  • At this operating point the engine returns 10.15 score for warranty risk score, the number this scenario is built around.
  • At this operating point the engine returns 20 score for field impact score.
  • At this operating point the engine returns 4 score for expected warranty occurrence score.
  • At this operating point the engine returns 3 score for warranty detection weakness score.

How this compares with the baseline

  • Against the tool's baseline example, where field impact severity if the fan fails in service sits at 8 score and the headline result is 5.35 score, this scenario comes in 89.72% above the baseline at 10.15 score.
  • It computes a single weighted warranty risk score from field impact (40%), expected occurrence (35%) and detection weakness (25%). The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Warranty risk score: 10.15 score (headline result)
  • Field impact score: 20 score
  • Expected warranty occurrence score: 4 score
  • Warranty detection weakness score: 3 score

Run it with your numbers

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

Last reviewed 2026-05-12.