Energy audit, blower door, and air sealing ROI calculators. Browse our free audit tools below — all calculators are instant, accurate, and require no sign-up.
Air Sealing ROI Calculator — Calculate the payback period and return on investment for air sealing your home. Estimate annual energy savings from reduced air leakage with this free calculator.
Blower Door Test (ACH50) Calculator — Calculate air changes per hour at 50 Pascals (ACH50) from blower door test results. Free ACH50 calculator for home energy auditors and inspectors.
Energy Audit Savings Estimator — Estimate total savings from a home energy audit by adding up individual improvement measures. Free energy audit savings calculator for homeowners.