Energy Audit
A professional assessment of a home's energy performance, including blower door testing, thermal imaging, duct leakage testing, insulation evaluation, and appliance efficiency review.
Why It Matters
A $300-$500 audit identifies the highest-ROI improvements for your specific home. The 25C credit covers 30% of audit costs (within the $150 annual limit for audits).
Related Topics
Related Terms
Blower Door Test
A diagnostic test that uses a calibrated fan mounted in an exterior doorway to depressurize the house and measure the total air leakage rate, expressed in CFM50 or ACH50.
Air Sealing
The process of identifying and sealing unintentional air leaks in a building envelope — including gaps around pipes, wires, ducts, windows, and the attic hatch.
R-Value
A measure of thermal resistance — how well a material resists heat flow. Higher R-values mean better insulation. Recommended attic R-values range from R-38 to R-60 depending on climate zone.