Where the value comes from
Sensitivity range
Cumulative cash position
Get a Quote Built Around These Numbers →Where the bake numbers come from
Cycle time. The model adds 45 minutes for loading, masking, spraying, flash and unloading to the cure/dwell time. The starting cure values are editable under “Tune the assumptions”; replace them with the coating technical data sheet and the shop's actual cycle.
Capacity. Faster cure earns throughput credit only when the booth is actually constrained. The model scales freed capacity by current utilization squared and then by the editable “freed capacity realized” factor. If reported daily output exceeds modeled capacity, throughput credit is removed and the inputs are flagged.
Energy. Enter the current and proposed energy cost per cycle directly from utility history or the AMU/burner estimate. This avoids mixing therms, gallons of propane and electric IR into a misleading common-rate formula.
Contribution. Use gross profit per added job, not invoice revenue. Rework benefit uses the editable before/after rates, four labor hours per event, and $55/hour loaded labor.
Verify before quoting: use the coating manufacturer's cure schedule, actual occupied booth time, installed proposal, utility rates and realistic downstream staffing capacity.
How this is calculated
Existing-booth upgrade: the starting case assumes a 20% shorter cycle, realizes 50% of freed capacity at a 40% contribution margin, and scales throughput by utilization squared. Rework, energy and coating savings are separate, editable assumptions. Coating savings are excluded when coating spend is left blank.
Bring work in-house: avoided invoices and any extra freight are reduced by editable in-house variable cost, per-job energy, and other recurring monthly operating cost. Extra freight starts at zero so it is not counted twice when already included in an invoice.
Heat / bake: capacity is calculated from available booth hours divided by non-cure time plus cure/dwell time. Only the chosen portion of usable freed capacity is credited. Incremental energy for current and added cycles is deducted.
Financial outputs: simple payback = investment ÷ monthly net benefit. Five-year net = five years of net benefit minus investment. Year-one ROI is year-one net after investment divided by investment. These are screening measures, not discounted cash-flow analysis.
Not included: financing, taxes, depreciation incentives, residual value, downtime during installation, and the time value of money. Those items may improve or weaken a project and should be reviewed with the customer's accountant and project team.
Estimates are illustrative and depend on your job mix, utilization, and local rates. Marathon booths are ETL Listed and engineered to NFPA 33. Want a projection built on your actual operation? Call (310) 791-5601.