Construction Products, Windows, Doors & Fenestration worked example

Fenestration Automation Payback with installed automation investment of 210,000 $: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop installed automation investment to 210,000 $, then walk the calculation through step by step. Estimate payback period for window, door, glass, or construction-product automation investments.

The inputs for this scenario

  • installed automation investment: 210,000 $ (the input this scenario stresses; the baseline uses 420,000)
  • annual automation savings: 165,000 $ / yr (held at the documented default)
  • annual automation support cost: 28,000 $ / yr (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Net annual automation savings = annual automation savings - annual automation support cost.
  • fenestration automation payback period works out to 1.53 yr at these inputs, and this is the headline figure for the scenario.
  • net annual automation savings works out to 137,000 $ / yr at these inputs.
  • installed automation investment works out to 210,000 $ at these inputs.
  • five-year automation net benefit works out to 475,000 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where installed automation investment sits at 420,000 $ and the headline result is 3.07 yr, this scenario comes in 50% below the baseline at 1.53 yr.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to installed automation investment, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. Simple payback ignores the time value of money, ramp-up periods, and salvage value, so it understates true cost for slow-ramping lines and should not be the only metric for multi-year decisions.

Results at a glance

  • fenestration automation payback period: 1.53 yr (headline result)
  • net annual automation savings: 137,000 $ / yr
  • installed automation investment: 210,000 $
  • five-year automation net benefit: 475,000 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Fenestration Automation Payback calculator, set installed automation investment to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.