In this episode of RESTalk, host Bill Spohn welcomes his most frequent guest, RESNET staff member, Ryan Meres, to discuss the latest trends in the 2024 edition of the HERS-rated homes. This report, created as an initiative of the RESNET Suppliers Advisory Board, highlights data trends and analysis in the residential construction market. The report shows a consistent year-over-year increase in HERS ratings, with the total number last year reaching 362,000, and projections for this year indicating that the number may surpass 400,000. Notably, states like Massachusetts and Arizona have seen significant adoption rates of HERS ratings in new homes, with Massachusetts leading at 98%.

The conversation delves into various aspects of the report, such as the geographic distribution of HERS ratings, the types of ventilation systems used in homes, and the rise of all-electric homes. Meres notes that certain states, like Texas, have seen substantial increases in the percentage of homes receiving HERS ratings. The report also explores energy cost savings, insulation values, and air leakage rates, highlighting that homes with solar panels tend to have better insulation compared to those without. Additionally, the trend towards high-efficiency mechanical equipment and the decreasing use of gas heating and water heating systems is discussed, reflecting a gradual shift towards more energy-efficient building practices.

Finally, the podcast touches on the growing importance of the HERSH2O rating system, which measures water efficiency in homes. Ryan explains that the program has been expanding, particularly in the Southwest, and is beginning to gain traction in other regions as well. The report indicates that HERSH2O rated homes can save significant amounts of water annually. The conversation concludes with a reflection on the value of the data provided in the report, emphasizing its role in helping builders and decision-makers understand and implement best practices for achieving energy and water efficiency in residential construction.

Link to the report