Each year, RESNET examines the trends across all homes that have received a HERS rating. RESNET has released its statistical abstract of homes HERS-rated in 2024, in the “Trends in HERS Rated Homes – A Statistical Abstract 2025”. The report first looks at broad national-level trends in the number of HERS ratings and average index scores. Next, the report covers state-level trends, including the total number of HERS ratings in each state and the percentage of new homes that received a HERS rating. A new feature in this year’s report provides a look at the top 20 states with the biggest improvement in average HERS scores since 2013. California came out on top with an average HERS score reduction of 57 points. Eighteen of the top 20 states had double-digit improvements in their average HERS scores. After analyzing the state-level data, the report examines trends in HERS ratings across cities, including the top 25 cities for single-family and multi-family ratings. The rest of the report examines individual trends across HERS ratings, including an overview of the basic characteristics of rated homes and their building components. It covers various building envelope components, air leakage rates, equipment efficiencies, and the use of solar energy on HERS-rated homes. ‘The report was developed by Ryan Meres, RESNET Programs Director, on behalf of RESNET’s Suppliers Advisory Board. Some report highlights include: • 196% increase in annual HERS Ratings from 2013 to 2024 • Over 436,000 HERS Ratings in 2024 • Nearly 6,000 HERSH2O® Ratings (a 49% increase over 2023) • 11 states had more than 10,000 HERS Ratings • Massachusetts led the nation in the percentage of homes HERS-rated, with 88% of new homes receiving a HERS Rating, while Arizona came in second with 72% • Texas tops the nation with over 113,000 ratings To download the report, click on Trends in HERS-Rated Homes 2025.
