Underwrite commercial building airtightness retrofits. Model ASTM E779 / USACE blower door CFM75 leakage rates, sensible & latent infiltration energy penalties, peak HVAC equipment downsizing capital credits, IRA §179D tax deductions, and 20-year IRR.
| Performance Metric | Sealed High-Performance Envelope | Pre-Retrofit Leaky Baseline |
|---|
Under ASHRAE 90.1-2022 and IECC Section C402.5, continuous air barriers are mandatory for commercial building envelopes. Uncontrolled air infiltration accounts for over 33% of commercial heating energy consumption and 15% of cooling cooling loads in North American climate zones.
HVAC Right-Sizing Capital Credit: Sealing the building envelope dramatically flattens peak heating and cooling loads on design-temperature days, allowing building owners to downsize replacement chillers, boilers, and RTUs by 15%–25%, capturing up to $1,200/ton in mechanical capital equipment avoidance.