🏡 Energy Efficiency Analyzer
Enter your current bill and the upgrades you're considering — insulation, solar, windows, HVAC — to estimate your savings, upgrade cost, and payback period.
⚡ Bill & Upgrades
What is an Energy Efficiency Analyzer?
It estimates how much a set of efficiency upgrades could cut your energy bill. Each upgrade — insulation, solar, windows, HVAC — contributes a savings share, combined and capped at a realistic ceiling, then weighed against the upgrade cost to find a simple payback period.
Use it to prioritize improvements by return — the results are estimates for planning, so a home energy audit will give you accurate, site-specific numbers and any rebates.
❓ Frequently Asked Questions
Which upgrades save the most on energy bills?
Solar typically delivers the largest single reduction, followed by an HVAC upgrade, added insulation, and high-performance windows. This analyzer assigns each a savings share and combines them, capping the total at 75% because no realistic mix eliminates the entire bill — there is always base load and the law of diminishing returns.
How is the payback period calculated?
It divides the estimated upgrade cost by the annual savings, giving the number of years for the savings to repay the investment. A faster payback means a stronger return; solar and HVAC often have longer paybacks but larger lifetime savings and may qualify for incentives the tool does not include.
Will my real savings match this estimate?
These are estimates only; verify with professionals. A home energy audit measures your actual usage, insulation, and equipment, and factors in local rates and rebates — that gives an accurate, home-specific savings and payback figure.