How will changing the climate zones affect code requirements?
The climate zones have been developed with the intent of having a neutral impact on code stringency-that is, neither increasing nor decreasing the overall stringency relative to existing requirements. However, it is not possible to change something as fundamental to many of the IECC requirements as climate without affecting some of the requirements one way or another. We hope interested and affected parties will conclude that the benefits of a shortened and streamlined code outweigh the inconvenience and dislocation resulting from minor changes in requirements in some locations–which were unavoidable.
