Use when a planned maintenance visit is skipped
Estimates added cost from energy drift and failure-risk drift.
| Customer name | — |
| Skipped visit (circle) | Spring / Fall |
| Last completed maintenance date | — |
| System age (years) | — |
Baseline annual cost inputs (from office or prior year)
| Annual energy ($/yr) | — |
| Expected repairs ($/yr) | — |
| Maintenance plan ($/yr) | — |
| Risk factor (0.10 / 0.25 / 0.50) | — |
Drift assumptions (choose conservative values)
Energy drift if maintenance missed: 3% / 5% / 8% / 10%
Repair risk drift if maintenance missed: 10% / 20% / 30% / 40%
Calculations
1) Added energy cost = Energy drift % × Annual energy → $ _____ / yr
2) Added repair cost = Repair risk drift % × Expected repairs → $ _____ / yr
3) Total added cost this year (missed visit) = (1) + (2) → $ _____ / yr
Customer-facing summary: Skipping maintenance increases energy use and raises the chance of a surprise repair. Optional 10-year impact: 10 × (Total added cost per year) → $ _____