Insulation Savings Calculator

Calculate how much you could save by improving your home insulation. See your payback period and long-term returns.

How the Calculator Works

This calculator estimates your potential savings from insulation improvements:

Current vs target: Compares heat retention between your current and upgraded insulation.
Heating reduction: Calculates percentage of heating costs saved based on improved efficiency.
Future savings: Accounts for rising energy prices over 20 years.
Payback period: Shows when cumulative savings exceed your investment.

Better insulation means less heat escapes, so you need less energy to stay warm.

Upgrading a 2,000 sq ft home from poor to good insulation:

How much can insulation save on heating bills?: Good insulation can reduce heating costs by 20-50% depending on your current insulation level and the improvements made. Wall insulation typically saves 20-35%, roof/loft insulation 15-25%, and upgrading windows 10-20%.
What is the payback period for insulation?: Payback periods vary by insulation type: loft insulation typically pays back in 2-5 years, wall insulation in 5-10 years, and new windows in 10-20 years. Rising energy prices are shortening these timeframes.
Which insulation should I prioritize?: Start with the easiest wins: loft/roof insulation is usually cheapest and most effective. Then consider wall insulation (cavity walls are cheaper than solid walls). Draft-proofing is low-cost with quick returns. Windows are usually last due to higher cost.