This report, originally published in December 2021, has been revised in July 2022 to expand the report scope to include commercial characterization in addition to the residential characterization in the original publication. The majority of these changes are in the new Section 3.2. Additionally, to support this scope expansion, we have included the additional section authors, added two appendences, modified the executive summary and conclusions, and updated text throughout to be inclusive of both the residential and commercial sectors. iv This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications.

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This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications. This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications. Residential Climate Area 4: Hot-Dry/Mixed-DryThe Hot-Dry/Mixed-Dry climate region covers southern California, the California Central Valley, southern Nevada, southern Arizona, southern New Mexico, and west Texas. Homes in this area represent 12% of U.S. housing units and residential buildings, and 6% of the residential thermal end-use energy. Figure 14 shows the 33 segments in the Hot-Dry/Mixed-Dry region, with the number of buildings, average building size, average thermal end-use intensity, and annual thermal end-use energy used in each segment.

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