About the Guide

Scope, Purpose and Cautions

This application is for informational purposes only. Each project will have its own specific requirements for satisfying ASHRAE 90.1 2010/2013/2016/2019/2022 compliance based on a variety of factors. Other exceptions or details may apply. Review the standard for specific requirements and/or consult with a professional advisor. Leviton Mfg. Co., Inc. is not responsible for any loss resulting from the use of any information found in this document.

Solutions are subject to change without notice.


To learn more about ASHRAE 90.1, please visit energycodes.gov and ASHRAE.org.


US Energy Codes as of 12/21/2023 source data

Map of Energy Code adoption by state as of 1/13/2022