Estimate wall-insulation payback
| Annual wall heat loss before | 10,368 kWh |
| Annual wall heat loss after | 1,728 kWh |
| Estimated annual saving | 8,640 kWh · $1,037 |
| Simple payback | 4.8 years |
Important: this is a wall-conduction estimate only. It excludes windows, roofs, floors, air leakage, thermal bridges and cooling effects; use it for early planning, not a final building specification.
What this estimate includes
The calculation models conductive heat loss through one wall area before and after insulation. It converts the estimated kWh reduction into a cost saving using the energy price you enter.
Use this for early planning
A whole-building assessment should include the roof, floor, windows, ventilation and local building requirements. Ask a qualified professional to specify a retrofit.