Industrial Fans, Blowers & Air Movement Equipment worked example

Labor Per Unit at 72% billable labor scope: a worked example

Suppose billable labor scope falls to 72%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate labor cost per fan or blower from labor hours, loaded labor rate, included labor scope, and fixed setup or supervision cost.

The inputs for this scenario

  • Fan build labor hours: 180 hr (held at the documented default)
  • Loaded labor rate: 78 $ / hr (held at the documented default)
  • Billable labor scope: 72 % (the input this scenario stresses; the baseline uses 100)
  • Fixed setup and supervision cost: 2,400 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Variable fan labor cost = fan labor hours × loaded labor rate × included labor scope.
  • Total fan labor cost works out to 12,509 $ at these inputs, and this is the headline figure for the scenario.
  • Loaded labor rate works out to 69.49 $ / hr at these inputs.
  • Variable fan labor cost works out to 10,109 $ at these inputs.
  • Fixed setup and supervision cost works out to 2,400 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where billable labor scope sits at 100% and the headline result is 16,440 $, this scenario comes in 23.91% below the baseline at 12,509 $.
  • It computes variable labor as hours times loaded rate times the in-scope fraction, then adds a fixed setup and supervision cost for the total fan labor cost. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Total fan labor cost: 12,509 $ (headline result)
  • Loaded labor rate: 69.49 $ / hr
  • Variable fan labor cost: 10,109 $
  • Fixed setup and supervision cost: 2,400 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Labor Per Unit calculator, set billable labor scope to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.