Building Materials Manufacturing worked example

Kiln Maintenance Payback with kiln maintenance project investment of 450,000 $: a worked example

What does the result look like when kiln maintenance project investment reaches 450,000 $? The full calculation is worked below with real intermediate numbers. a plant needs to justify a kiln maintenance project using annual savings and support cost

The inputs for this scenario

  • Kiln maintenance project investment: 450,000 $ (raised for this scenario; the documented default is 180,000)
  • Expected annual savings from uptime, energy, or yield: 95,000 $ / yr (unchanged)
  • Annual support, parts, or service cost: 12,000 $ / yr (unchanged)

Working through the calculation

  • Applying the documented formula (Net annual savings = annual savings - annual support cost) to the inputs above produces each figure below.
  • At this operating point the engine returns 5.42 years payback for kiln maintenance payback, the number this scenario is built around.
  • At this operating point the engine returns 83,000 $ / yr for kiln maintenance payback net annual savings.
  • At this operating point the engine returns 450,000 $ for kiln maintenance project investment.
  • At this operating point the engine returns -35,000 $ for kiln maintenance payback five year net.

How this compares with the baseline

  • Against the tool's baseline example, where kiln maintenance project investment sits at 180,000 $ and the headline result is 2.17 years payback, this scenario comes in 150% above the baseline at 5.42 years payback.
  • A figure at this level is achievable when kiln maintenance project investment is genuinely sustained, not just peaked for a shift. It is a simple (undiscounted) payback and ignores the time value of money, fuel-price drift, and the risk-reduction value of avoiding an unplanned kiln stop, so a 2-year number is not the same as a 2-year NPV.

Results at a glance

  • Kiln Maintenance Payback: 5.42 years payback (headline result)
  • Kiln Maintenance Payback net annual savings: 83,000 $ / yr
  • Kiln maintenance project investment: 450,000 $
  • Kiln Maintenance Payback five year net: -35,000 $

Run it with your numbers

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

Last reviewed 2026-05-12.