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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.

공식

Payback period = Installation cost / Annual energy saving

단계별 가이드

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

풀어진 예시

입력

Loft insulation 400 GBP, annual saving 250 GBP

결과

Payback: 1.6 years; 20-year net saving: 4,600 GBP

자주 묻는 질문

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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