RESNET® recently released its statistical abstract of homes HERS®-rated in 2024, in the “Trends in HERS Rated Homes – A Statistical Abstract 2025”. The report also includes data on HERSH2O, RESNET’s whole-house water efficiency rating that can be used to achieve the WaterSense Label for Homes. The HERSH2O Index works the same as the HERS Index, where a lower score means less water usage. Last year was the third full year of receiving HERSH2O Ratings in the RESNET Registry. After launching HERSH2O and the WaterSense Label for Homes, version 2, in early 2021, the program has seen steady growth through 2024. The number of HERSH2O Ratings increased by 49 percent from 2023 to 2024. The following are the HERSH2O numbers for last year: • Number of homes rated with HERSH2O and receiving the WaterSense Label for Homes: 5,987 • Average Index score of HERSH2O Ratings: 59 • Number of RESNET-accredited HERSH2O Providers: 27 • Number of certified RESNET HERSH2O Raters: 361 • The average HERSH2O-rated home is estimated to save 120,000 gallons of water per year compared to the Reference Home. To learn more about HERSH2O and the WaterSense Label for Homes, visit: https://www.resnet.us/about/hersh2o/. To access the full Trends report, click here.
