Climate Zone Map from IECC 2021 - Building America Solution Center 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 from unconditioned, outside air), mechanical systems, lighting systems and service water heating systems in homes and commercial businesses
ANSI ASHRAE Addendum a to ANSI ASHRAE Standard 169-2020 Informative Appendix B provides illustrative climate zone maps for major countries and continents These maps do not supersede the information in Normative Appendix A The maps are one-half one-quarter-degree latitude by five-eighths one-quarter-degree longitude resolution (0 25 x 0 25°)
ASHRAE 90. 1 MB304 - Insulation Institute ASHRAE began using a new climate zone map with ASHRAE Standard 90 1-2004 The Department of Energy developed this map with the intention of making energy codes and standards easier to use and enforce, and to promote consistency between the IECC and ASHRAE