Insulation Payback Calculator

Estimate how long insulation could take to pay back using your heating bills and an expected savings percentage.

Example: 30–200 m² (walls/roof/floor).
Enter average installed cost per m².
If > 0, this overrides area × price.
Average heating cost during heating months.
How many months you typically heat.
Typical ranges: 5–25% depending on what you insulate and your current home.
Click to autofill savings %.
Only affects formatting.
Shows “net benefit” over time.