HECS Blog — HVAC Testing, Energy Certification, and Building Performance

Choosing between two IBHS designations that protect different building layers — and which one your insurer will actually price.

A field-side guide to certification level selection, air sealing targets, and documentation burden across Kentucky, North Carolina, and Alabama multifamily projects.

What HECS verifies on blower door, duct leakage, and ACH50 compliance — and where the 2024 IECC thresholds actually fall.

Two pressure regimes, one verdict — how raters actually score the test.

What developers, custom builders, and code officials are actually paying HECS this year, and which thresholds gate each test.

Code-compliance guidance for builders, developers, and code officials across the HECS service region.

Comparing designations under the 2025 FORTIFIED Home Standard for inland High Wind & Hail projects.

Selecting the right certification tier is the difference between a marketing label and a verifiable performance commitment.

The Ohio Valley v3.1 → v3.2 transition and what certification bodies actually check in 2026.

Code-aligned documentation paths for developers racing the §45L window.