2025 Iecc Climate Zone Map. Department of energy’s pacific northwest. Building america solution center is a resource of the u.s.
2021 edition of code establishing a baseline for energy efficiency by setting performance standards for the building envelope (defined as the boundary that separates heated/cooled air. To determine the climate zones for locations not listed in this code, use the following information to determine climate zone numbers and letters in accordance with items 1 through 5.
