IECC 2021 · PNNL
Vermont climate zones
Vermont’s 14 counties fall in 1 IECC 2021 climate zone: 6A (14).
Zone 6A: cold-humid
Attic target R60 (ENERGY STAR)Addison County (Cold) · Bennington County (Cold) · Caledonia County (Cold) · Chittenden County (Cold) · Essex County (Cold) · Franklin County (Cold) · Grand Isle County (Cold) · Lamoille County (Cold) · Orange County (Cold) · Orleans County (Cold) · Rutland County (Cold) · Washington County (Cold) · Windham County (Cold) · Windsor County (Cold)