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Home insulation reduces heat loss, cutting heating bills and carbon emissions. Loft insulation typically pays back within 1-3 years and is the highest-ROI home energy improvement.
Formula
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- 1Loft insulation (270mm mineral wool): approx 300-500 GBP, saves 200-350 GBP/year
- 2Cavity wall insulation: approx 500-1,500 GBP, saves 150-250 GBP/year
- 3Payback period = Installation cost / Annual energy saving
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What is Insulation Payback?
Home insulation reduces heat loss, cutting heating bills and carbon emissions. Loft insulation typically pays back within 1-3 years and is the highest-ROI home energy improvement
How accurate is the Insulation Payback calculator?
The calculator uses the standard published formula for insulation payback. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.
What units does the Insulation Payback calculator use?
This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.
What formula does the Insulation Payback calculator use?
The core formula is: Payback period = Installation cost / Annual energy saving. Each step in the calculation is shown so you can verify the result manually.
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