Heat Treatment, Furnaces & Thermal Processing worked example

Furnace Payback with installed furnace investment of 125,000 $: a worked example

Suppose installed furnace investment falls to 125,000 $. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate payback period for a furnace, oven, controls upgrade, burner retrofit, quench system, or thermal processing automation project.

The inputs for this scenario

  • Installed furnace investment: 125,000 $ (the input this scenario stresses; the baseline uses 250,000)
  • Annual heat treat savings: 90,000 $ / yr (held at the documented default)
  • Annual support cost: 15,000 $ / yr (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Net annual furnace savings = annual heat treat savings - annual support cost.
  • Furnace payback period works out to 1.67 yr at these inputs, and this is the headline figure for the scenario.
  • Net annual furnace savings works out to 75,000 $ / yr at these inputs.
  • Installed furnace investment works out to 125,000 $ at these inputs.
  • Five year net benefit works out to 250,000 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where installed furnace investment sits at 250,000 $ and the headline result is 3.33 yr, this scenario comes in 50% below the baseline at 1.67 yr.
  • It computes how many years net annual furnace savings take to repay the installed furnace investment, and the cumulative five-year net benefit. 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

  • Furnace payback period: 1.67 yr (headline result)
  • Net annual furnace savings: 75,000 $ / yr
  • Installed furnace investment: 125,000 $
  • Five year net benefit: 250,000 $

Run it with your numbers

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

Last reviewed 2026-05-12.